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Azimzadeh B, Nicholson LK, Martínez CE. In the presence of the other: How glyphosate and peptide molecules alter the dynamics of sorption on goethite. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169264. [PMID: 38092207 DOI: 10.1016/j.scitotenv.2023.169264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 11/19/2023] [Accepted: 12/08/2023] [Indexed: 12/17/2023]
Abstract
The interactions with soil mineral surfaces are among the factors that determine the mobility and bioavailability of organic contaminants and of nutrients present in dissolved organic matter (DOM) in soil and aquatic environments. While most studies focus on high molar mass organic matter fractions (e.g., humic and fulvic acids), very few studies investigate the impact of DOM constituents in competitive sorption. Here we assess the sorption behavior of a heavily used herbicide (i.e., glyphosate) and a component of DOM (i.e., a peptide) at the water/goethite interface, inclusive of potential glyphosate-peptide interactions. We used in-situ ATR-FTIR (attenuated total reflectance Fourier-transform infrared) spectroscopy to study sorption kinetics and mechanisms of interaction as well as conformational changes to the secondary structure of the peptide. NMR (nuclear magnetic resonance) spectroscopy was used to assess the level of interaction between glyphosate and the peptide and changes to the peptide' secondary structure in solution. For the first time, we illustrate competition for sorption sites results in co-sorption of glyphosate and peptide molecules that affects the extent, kinetics, and mechanism of interaction of each with the surface. In the presence of the peptide, the formation of outer-sphere glyphosate-goethite complexes is favored albeit inner-sphere glyphosate-goethite bonds (i.e., POFe) are still formed. The presence of glyphosate induces secondary structural shifts of the sorbed peptide that maximizes the formation of H-bonds with the goethite surface. However, glyphosate and the peptide do not seem to interact with one another in solution nor at the goethite surface upon sorption. The results of this work highlight potential consequences of competition for sorption sites, for example the transport of organic contaminants and nutrient-rich (i.e., nitrogen) DOM components in relevant environmental systems. Predicting the rate and extent with which organic pollutants are removed from solution by a given solid is also one of the most critical factors for the design of effective sorption systems in engineering applications.
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Affiliation(s)
- Behrooz Azimzadeh
- Soil and Crop Sciences, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Linda K Nicholson
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA
| | - Carmen Enid Martínez
- Soil and Crop Sciences, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA.
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Tan H, Xing Q, Mo L, Wu C, Zhang X, He X, Liang Y, Hao R. Occurrence, multiphase partitioning, drivers, and ecological risks of current-use herbicides in a river basin dominated by rice-vegetable rotations in tropical China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 908:168270. [PMID: 37918751 DOI: 10.1016/j.scitotenv.2023.168270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 10/29/2023] [Accepted: 10/30/2023] [Indexed: 11/04/2023]
Abstract
Rice-vegetable rotation practices prevail in subtropical and tropical agriculture worldwide, with applications of current-use herbicides (CUHs) vital for nontarget plant control. After application, CUHs migrate to environmental compartments, where the occurrence, fate, and ecological risks have not been well characterized. To further understand the occurrence and multiphase partitioning, as well as to evaluate potential drivers and mixture risks in environmental compartments, we analyzed 11 CUHs in 576 samples from 36 rice-vegetable rotations in Nandu River basin, Hainan, China. Samples included soil, water, suspended particulate matter, and sediment collected during both rice and vegetable planting periods. The CUH concentrations varied across environmental compartments, but with high levels of glyphosate and aminomethylphosphonic acid organophosphorus herbicides (OPHs) frequently detected, accounting for 82.3 % to 99.0 % in environmental compartments. Phenoxy acid (PAA) and chloroacetanilide (ANH) herbicides were detected at lower frequencies. Spatiotemporal variation was significantly different among OPHs, ANHs, and PAAs, with geographic and crop-related patterns most evident for CUHs rather than OPHs. Structural equation model, redundancy, and boosted regression tree analyses indicated environmental compartment properties (pH, organic matter, and Fe/Al oxides), crop type, and wet/dry climate were important drivers of spatiotemporal patterns. Fugacity ratios indicated multiphase partitioning and transport of CUHs differed in rice and vegetable planting periods. A new assessment framework based on species-sensitive distributions and environmental compartment weight index indicated unacceptable risks of CUHs (risk quotient >1 in >50 % of sites), with most risks from OPHs (10.5 % to 98.0 %) and butachlor, acetochlor, and 2,4-dichlorophenoxyacetic acid. Risk hot spots were identified as the soil, the central region, and the vegetable planting period, potentially threatening nontarget organisms (e.g., Lemna minor, Glomus intraradices, and Apis mellifera). This study provides a new risk assessment framework and demonstrates the domination of OPHs in CUH contamination and risks in the tropics, thus helping guide policymakers and stakeholders on herbicide management.
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Affiliation(s)
- Huadong Tan
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China; National Agricultural Experimental Station for Agricultural Environment, Danzhou 571737, PR China; Hainan Engineering Research Center for Non-point Source and Heavy Metal Pollution Control, Danzhou 571737, PR China
| | - Qiao Xing
- Hainan Research Academy of Environmental Sciences, Haikou 571126, PR China
| | - Ling Mo
- Hainan Research Academy of Environmental Sciences, Haikou 571126, PR China
| | - Chunyuan Wu
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China; National Agricultural Experimental Station for Agricultural Environment, Danzhou 571737, PR China; Hainan Engineering Research Center for Non-point Source and Heavy Metal Pollution Control, Danzhou 571737, PR China.
| | - Xiaoying Zhang
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China
| | - Xiaoyu He
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China; Guizhou University, Guiyang 550025, PR China
| | - Yuefu Liang
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, PR China; Huazhong Agricultural University, Wuhan 430070, PR China
| | - Rong Hao
- Huazhong Agricultural University, Wuhan 430070, PR China.
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Azimzadeh B, Martínez CE. Unraveling the role of polysaccharide-goethite associations on glyphosate' adsorption-desorption dynamics and binding mechanisms. J Colloid Interface Sci 2024; 653:1283-1292. [PMID: 37797504 DOI: 10.1016/j.jcis.2023.09.141] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 08/29/2023] [Accepted: 09/23/2023] [Indexed: 10/07/2023]
Abstract
HYPOTHESIS Glyphosate retention at environmental interfaces is strongly governed by adsorption and desorption processes. In particular, glyphosate can react with organo-mineral associations (OMAs) in soils, sediments, and aquatic environments. We hypothesize mineral-adsorbed biomacromolecules modulate the extent and rate of glyphosate adsorption and desorption where electrostatic and noncovalent interactions with organo-mineral surfaces are favored. EXPERIMENTS Here we use in-situ attenuated total reflectance Fourier-transform infrared, X-ray photoelectron spectroscopy, and batch experiments to characterize glyphosate' adsorption and desorption mechanisms and kinetics at an organo-mineral interface. Model polysaccharide-goethite OMAs are prepared with a range of organic (polysaccharide, PS) surface loadings. Sequential adsorption-desorption studies are conducted by introducing glyphosate and background electrolyte solutions, respectively, to PS-goethite OMAs. FINDINGS We find the extent of glyphosate adsorption at PS-goethite interfaces was reduced compared to that at the goethite interface. However, increased polysaccharide surface loading resulted in lower relative glyphosate desorption. At the same time, increased PS surface loading yielded slower glyphosate adsorption and desorption kinetics compared to corresponding processes at the goethite interface. We highlight that adsorbed PS promotes the formation of weak noncovalent interactions between glyphosate and PS-goethite OMAs, including the evolution of hydrogen bonds between (i) the amino group of glyphosate and PS and (ii) the phosphonate group of glyphosate and goethite. It is also observed that glyphosate' phosphonate group preferentially forms inner-sphere monodentate complexes with goethite in PS-goethite whereas bidentate configurations are favored on goethite.
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Affiliation(s)
- Behrooz Azimzadeh
- Soil and Crop Sciences, School of Integrative Plant Science, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Carmen Enid Martínez
- Soil and Crop Sciences, School of Integrative Plant Science, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY 14853, USA.
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Fernandes G, Aparicio VC, De Gerónimo E, Prestes OD, Zanella R, Ebling E, Parisi PB, Mollmann VHDS, Reichert JM, Rheinheimer Dos Santos D. Epilithic biofilms as a discriminating matrix for long-term and growing season pesticide contamination in the aquatic environment: Emphasis on glyphosate and metabolite AMPA. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 900:166315. [PMID: 37604376 DOI: 10.1016/j.scitotenv.2023.166315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 08/10/2023] [Accepted: 08/12/2023] [Indexed: 08/23/2023]
Abstract
The indiscriminate use of pesticides represents high ecological risk in aquatic systems. Recently, the inclusion of epilithic biofilms as a reactive matrix has shown potential in diagnosing the health of water resources. The objective of this study was to use multiple matrices (water, suspended sediments, and biofilms) to discriminate contamination degrees in catchments with long and recent history of intensive pesticide use and to monitor growing season pesticides transfer to watercourses. Two catchments were monitored: one representative of "modern agriculture" in a subtropical environment, and another representative of recent agricultural expansion over the Pampa Biome in subtropical Brazil. Glyphosate and AMPA were accumulated in the biofilms and were detected at all sites and at all monitoring times, in concentrations ranging from 195 to 7673 μg kg-1 and from 225 to 4180 μg kg-1, respectively. Similarly, the fungicide tebuconazole has always been found in biofilms. The biofilms made it possible to discriminate the long-term history of pesticide use in the catchments and even to identify the influx pulses of pesticides immediately after their application to crops, which was not possible with active water sampling and even with suspended sediment monitoring. It is strongly recommended that, in regions with intensive cultivation of soybeans and other genetically modified crops, the presence of glyphosate and its metabolite AMPA be permanently monitored, a practice still very scarce in the literature.
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Affiliation(s)
- Gracieli Fernandes
- Soils Department, Federal University of Santa Maria, Roraima Avenue, 1000, Santa Maria, RS, 97105-900, Brazil.
| | - Virginia Carolina Aparicio
- Instituto Nacional de Tecnología Agropecuaria INTA EEA Balcarce, Ruta Nacional 226, Km 73,5, Balcarce CP 7620, Buenos Aires, Argentina
| | - Eduardo De Gerónimo
- Instituto Nacional de Tecnología Agropecuaria INTA EEA Balcarce, Ruta Nacional 226, Km 73,5, Balcarce CP 7620, Buenos Aires, Argentina
| | - Osmar Damian Prestes
- Laboratory of Pesticide Residues Analysis (LARP), Chemistry Department, Federal University of Santa Maria, Roraima Avenue, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Renato Zanella
- Laboratory of Pesticide Residues Analysis (LARP), Chemistry Department, Federal University of Santa Maria, Roraima Avenue, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Ederson Ebling
- Soils Department, Federal University of Santa Maria, Roraima Avenue, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Pedro Bolzan Parisi
- Soils Department, Federal University of Santa Maria, Roraima Avenue, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Victor Hugo Dos Santos Mollmann
- Graduate Program in Animal Biodiversity, Federal University of Santa Maria, Roraima Avenue, 1000, Santa Maria, RS, 97105-900, Brazil
| | - José Miguel Reichert
- Soils Department, Federal University of Santa Maria, Roraima Avenue, 1000, Santa Maria, RS, 97105-900, Brazil
| | - Danilo Rheinheimer Dos Santos
- Soils Department, Federal University of Santa Maria, Roraima Avenue, 1000, Santa Maria, RS, 97105-900, Brazil; Foreign Visiting Professors at University of Limoges, (2022-2023) France
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Martins GL, Jose de Souza A, Osti JF, Gontijo JB, Cherubin MR, Viana DG, Rodrigues MM, Tornisielo VL, Regitano JB. The role of land use, management, and microbial diversity depletion on glyphosate biodegradation in tropical soils. ENVIRONMENTAL RESEARCH 2023; 231:116178. [PMID: 37201699 DOI: 10.1016/j.envres.2023.116178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 05/14/2023] [Accepted: 05/15/2023] [Indexed: 05/20/2023]
Abstract
Land use and management changes affect the composition and diversity of soil bacteria and fungi, which in turn may alter soil health and the provision of key ecological functions, such as pesticide degradation and soil detoxification. However, the extent to which these changes affect such services is still poorly understood in tropical agroecosystems. Our main goal was to evaluate how land-use (tilled versus no-tilled soil), soil management (N-fertilization), and microbial diversity depletion [tenfold (D1 = 10-1) and thousandfold (D3 = 10-3) dilutions] impacted soil enzyme activities (β-glycosidase and acid phosphatase) involved in nutrient cycles and glyphosate mineralization. Soils were collected from a long-term experimental area (35 years) and compared to its native forest soil (NF). Glyphosate was selected due to its intensive use in agriculture worldwide and in the study area, as well as its recalcitrance in the environment by forming inner sphere complexes. Bacterial communities played a more important role than the fungi in glyphosate degradation. For this function, the role of microbial diversity was more critical than land use and soil management. Our study also revealed that conservation tillage systems, such as no-tillage, regardless of nitrogen fertilizer use, mitigates the negative effects of microbial diversity depletion, being more efficient and resilient regarding glyphosate degradation than conventional tillage systems. No-tilled soils also presented much higher β-glycosidase and acid phosphatase activities as well as higher bacterial diversity indexes than those under conventional tillage. Consequently, conservation tillage is a key component for sustaining soil health and its functionality, providing critical ecosystem functions, such as soil detoxification in tropical agroecosystems.
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Affiliation(s)
- Guilherme Lucio Martins
- "Luiz de Queiroz College of Agriculture" (ESALQ), University of São Paulo, Piracicaba, São Paulo, Brazil; Centre for Nuclear Energy in Agriculture (CENA), University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Adijailton Jose de Souza
- "Luiz de Queiroz College of Agriculture" (ESALQ), University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Júlio Flavio Osti
- "Luiz de Queiroz College of Agriculture" (ESALQ), University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Júlia Brandão Gontijo
- Centre for Nuclear Energy in Agriculture (CENA), University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Maurício Roberto Cherubin
- "Luiz de Queiroz College of Agriculture" (ESALQ), University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Douglas Gomes Viana
- "Luiz de Queiroz College of Agriculture" (ESALQ), University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Mayra Maniero Rodrigues
- "Luiz de Queiroz College of Agriculture" (ESALQ), University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Valdemar Luiz Tornisielo
- Centre for Nuclear Energy in Agriculture (CENA), University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Jussara Borges Regitano
- "Luiz de Queiroz College of Agriculture" (ESALQ), University of São Paulo, Piracicaba, São Paulo, Brazil.
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Soares C, Fernandes B, Paiva C, Nogueira V, Cachada A, Fidalgo F, Pereira R. Ecotoxicological relevance of glyphosate and flazasulfuron to soil habitat and retention functions - Single vs combined exposures. JOURNAL OF HAZARDOUS MATERIALS 2023; 442:130128. [PMID: 36303338 DOI: 10.1016/j.jhazmat.2022.130128] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 08/31/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Glyphosate (GLY) and flazasulfuron (FLA) are two non-selective herbicides commonly applied together. However, research focused on their single and combined ecotoxicological impacts towards non-target organisms is still inconclusive. Therefore, this study aimed to test their single effects on soil's habitat and retention functions, and to unravel their combined impacts to earthworms and terrestrial plants. For this, ecotoxicological assays were performed with plants (Medicago sativa), oligochaetes (Eisenia fetida) and collembola (Folsomia candida). Soil elutriates were also prepared and tested in macrophytes (Lemna minor) and microalgae (Raphidocelis subcapitata). FLA (82-413 µg kg-1) reduced earthworms' and collembola's reproduction and severely impaired M. sativa growth, being much more toxic than GLY (up to 30 mg kg-1). In fact, the latter only affected plant growth (≥ 9 mg kg-1) and earthworms (≥ 13 mg kg-1), especially at high concentrations, with no effects on collembola. Moreover, only elutriates from FLA-contaminated soils significantly impacted L. minor and R. sucapitata. The experiments revealed that the co-exposure to GLY and FLA enhanced the toxic effects of contaminated soils not only on plants but also on earthworms'. However, such increase in toxicity was dependent on GLY residual concentrations in soils. Overall, this work underpins that herbicides risk assessment should consider herbicides co-exposures, since the evaluation of single exposures is not representative of current phytosanitary practices and of the potential effects under field conditions, where residues of different compounds may persist in soils.
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Affiliation(s)
- Cristiano Soares
- GreenUPorto & INOV4AGRO - Sustainable Agrifood Production Research Centre, Biology Department, Faculty of Sciences of University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal.
| | - Beatriz Fernandes
- GreenUPorto & INOV4AGRO - Sustainable Agrifood Production Research Centre, Biology Department, Faculty of Sciences of University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; CIIMAR - Interdisciplinary Centre of Marine & Environmental Research, Rua dos Bragas, n. 289, 4050-123 Porto, Portugal
| | - Cristiana Paiva
- GreenUPorto & INOV4AGRO - Sustainable Agrifood Production Research Centre, Biology Department, Faculty of Sciences of University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
| | - Verónica Nogueira
- CIIMAR - Interdisciplinary Centre of Marine & Environmental Research, Rua dos Bragas, n. 289, 4050-123 Porto, Portugal; Biology Department, Faculty of Sciences of University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
| | - Anabela Cachada
- CIIMAR - Interdisciplinary Centre of Marine & Environmental Research, Rua dos Bragas, n. 289, 4050-123 Porto, Portugal; Biology Department, Faculty of Sciences of University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
| | - Fernanda Fidalgo
- GreenUPorto & INOV4AGRO - Sustainable Agrifood Production Research Centre, Biology Department, Faculty of Sciences of University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
| | - Ruth Pereira
- GreenUPorto & INOV4AGRO - Sustainable Agrifood Production Research Centre, Biology Department, Faculty of Sciences of University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
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Wang B, Shan T, Wang J, Huang F, Liu W, Tu W, Li S, Chen Q. Sources, distribution and decomposition of soil organic matter based on an effective biomarker in the pastoral areas of Zoige Plateau, China. CHEMOSPHERE 2023; 312:137295. [PMID: 36410503 DOI: 10.1016/j.chemosphere.2022.137295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 11/14/2022] [Accepted: 11/17/2022] [Indexed: 06/16/2023]
Abstract
The degradation of organic matter in soils plays an important role in the carbon cycle. Lignin is the main source of soil organics and it can be used to trace the source, distribution and turnover of organic matter. In this study the distribution and degradation of lignin were investigated to identify the source and degradation of soil organic matter during the succession of China's Zoige Plateau. Lignin monomers were determined by gas chromatography-mass spectrometry with alkaline CuO oxidation and the soils' δ13C and δ15N contents were interpreted to explore the turnover rate of lignin and organic matter. The main source of organics was identified as C3 non-woody angiosperm tissues. Lignin in the topsoil (0-30 cm) was derived from litter and roots, and it then migrated vertically to the deep soil (30-80 cm). Correlations of δ13C/δ15N with the soil's elemental composition showed that the organics degraded more quickly in meadow soil than in bog soil. The soil communities in the meadow and bog soils were generally similar, but there were certain differences in the dominant microbial phyla at different depths. The meadow soil's effectiveness as a carbon sink was gradually weakened, while that of the bog soil strengthened with depth. These results provide a scientific basis for accurately assessing the carbon sink capacity of the soils in Zoige Plateau.
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Affiliation(s)
- Bin Wang
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People's Republic of China; Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People's Republic of China.
| | - Tingqian Shan
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People's Republic of China; Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People's Republic of China
| | - Junjie Wang
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People's Republic of China; Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People's Republic of China
| | - Fuyang Huang
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People's Republic of China; Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People's Republic of China.
| | - Wei Liu
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People's Republic of China; Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People's Republic of China
| | - Weiguo Tu
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People's Republic of China; Sichuan Provincial Academy of Natural Resource Sciences, Chengdu, Sichuan 610015, People's Republic of China
| | - Sen Li
- Sichuan Provincial Academy of Natural Resource Sciences, Chengdu, Sichuan 610015, People's Republic of China
| | - Qingsong Chen
- Sichuan Provincial Academy of Natural Resource Sciences, Chengdu, Sichuan 610015, People's Republic of China
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Windom ZW, Datta M, Huda MM, Sabuj MA, Rai N. Understanding speciation and solvation of glyphosate from first principles simulations. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Takács E, Gémes B, Szendrei F, Keszei C, Barócsi A, Lenk S, Domján L, Mörtl M, Székács A. Utilization of a Novel Immunofluorescence Instrument Prototype for the Determination of the Herbicide Glyphosate. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27196514. [PMID: 36235051 PMCID: PMC9570942 DOI: 10.3390/molecules27196514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/23/2022] [Accepted: 09/26/2022] [Indexed: 11/06/2022]
Abstract
An enzyme-linked fluorescent immunoassay (ELFIA) method has been developed for the quantitative analytical determination of the herbicide active ingredient glyphosate in environmental matrices (surface water, soil, and plant tissues). Glyphosate, as a ubiquitous agricultural pollutant, is a xenobiotic substance with exposure in aquatic and terrestrial ecosystems due its extremely high worldwide application rate. The immunoassay developed in Project Aquafluosense is part of a fluorescence-based instrumentation setup for the in situ determination of several characteristic water quality parameters. The 96-well microplate-based competitive immunoassay method applies fluorescence signal detection in the concentration range of 0–100 ng/mL glyphosate. Application of the fluorescent signal provides a limit of detection of 0.09 ng/mL, which is 2.5-fold lower than that obtained with a visual absorbance signal. Beside the improved limit of detection, determination by fluorescence provided a wider and steeper dynamic range for glyphosate detection. No matrix effect appeared for the undiluted surface water samples, while plant tissues and soil samples required dilution rates of 1:10 and 1:100, respectively. No cross-reaction was determined with the main metabolite of glyphosate, N-aminomethylphosphonic acid, and related compounds.
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Affiliation(s)
- Eszter Takács
- Agro-Environmental Research Centre, Institute of Environmental Sciences, Hungarian University of Agriculture and Life Sciences, Herman O. út 15, H-1022 Budapest, Hungary
- Correspondence: ; Tel.: +36-1796-0400
| | - Borbála Gémes
- Agro-Environmental Research Centre, Institute of Environmental Sciences, Hungarian University of Agriculture and Life Sciences, Herman O. út 15, H-1022 Budapest, Hungary
| | - Fanni Szendrei
- Institute of Isotopes Co. Ltd., Konkoly-Thege Miklós út 29-33, H-1121 Budapest, Hungary
| | - Csaba Keszei
- Institute of Isotopes Co. Ltd., Konkoly-Thege Miklós út 29-33, H-1121 Budapest, Hungary
| | - Attila Barócsi
- Department of Atomic Physics, Institute of Physics, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary
| | - Sándor Lenk
- Department of Atomic Physics, Institute of Physics, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary
| | - László Domján
- Optimal Optik Ltd., Dayka Gábor u. 6/B, H-1118 Budapest, Hungary
| | - Mária Mörtl
- Agro-Environmental Research Centre, Institute of Environmental Sciences, Hungarian University of Agriculture and Life Sciences, Herman O. út 15, H-1022 Budapest, Hungary
| | - András Székács
- Agro-Environmental Research Centre, Institute of Environmental Sciences, Hungarian University of Agriculture and Life Sciences, Herman O. út 15, H-1022 Budapest, Hungary
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Wimmer B, Neidhardt H, Schwientek M, Haderlein SB, Huhn C. Phosphate addition enhances alkaline extraction of glyphosate from highly sorptive soils and aquatic sediments. PEST MANAGEMENT SCIENCE 2022; 78:2550-2559. [PMID: 35322519 DOI: 10.1002/ps.6883] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 03/04/2022] [Accepted: 03/24/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Analytical constraints complicate environmental monitoring campaigns of the herbicide glyphosate and its major degradation product aminomethylphosphonic acid (AMPA): their strong sorption to soil minerals requires harsh extraction conditions. Coextracted matrix compounds impair downstream analysis and must be removed before analysis. RESULTS A new extraction method combined with subsequent capillary electrophoresis-mass spectrometry for derivatization-free analysis of glyphosate and AMPA in soil and sediment was developed and applied to a suite of environmental samples. It was compared to three extraction methods from literature. We show that no extraction medium reaches 100% recovery. The new phosphate-supported alkaline extraction method revealed (1) high recoveries of 70-90% for soils and aquatic sediments, (2) limits of detections below 20 μg kg-1 , and (3) a high robustness, because impairing matrix components (trivalent cations and humic acids) were precipitated prior to the analysis. Soil and sediment samples collected around Tübingen, Germany, revealed maximum glyphosate and AMPA residues of 80 and 2100 μg kg-1 , respectively, with residues observed along a core of lake sediments. Glyphosate and/or AMPA were found in 40% of arable soils and 57% of aquatic sediment samples. CONCLUSION In this work, we discuss soil parameters that influence (de)sorption and thus extraction. From our results we conclude that residues of glyphosate in environmental samples are easily underestimated. With its possible high throughput, the method presented here can resolve current limitations in monitoring campaigns of glyphosate by addressing soil and aquatic sediment samples with critical sorption characteristics.
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Affiliation(s)
- Benedikt Wimmer
- Institute of Physical and Theoretical Chemistry, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - Harald Neidhardt
- Geoscience, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - Marc Schwientek
- Center for Applied Geosciences, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - Stefan B Haderlein
- Center for Applied Geosciences, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - Carolin Huhn
- Institute of Physical and Theoretical Chemistry, Eberhard Karls Universität Tübingen, Tübingen, Germany
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11
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Zabaloy MC, Allegrini M, Hernandez Guijarro K, Behrends Kraemer F, Morrás H, Erijman L. Microbiomes and glyphosate biodegradation in edaphic and aquatic environments: recent issues and trends. World J Microbiol Biotechnol 2022; 38:98. [PMID: 35478266 DOI: 10.1007/s11274-022-03281-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 04/08/2022] [Indexed: 12/11/2022]
Abstract
Glyphosate (N-(phosphonomethyl)glycine) has emerged as the top-selling herbicide worldwide because of its versatility in controlling annual and perennial weeds and the extensive use of glyphosate-resistant crops. Concerns related to the widespread use of glyphosate and its ubiquitous presence in the environment has led to a large number of studies and reviews, which examined the toxicity and fate of glyphosate and its major metabolite, aminomethylphosphonic acid (AMPA) in the environment. Because the biological breakdown of glyphosate is most likely the main elimination process, the biodegradation of glyphosate has also been the object of abundant experimental work. Importantly, glyphosate biodegradation in aquatic and soil ecosystems is affected not only by the composition and the activity of microbial communities, but also by the physical environment. However, the interplay between microbiomes and glyphosate biodegradation in edaphic and aquatic environments has rarely been considered before. The proposed minireview aims at filling this gap. We summarize the most recent work exploring glyphosate biodegradation in natural aquatic biofilms, the biological, chemical and physical factors and processes playing on the adsorption, transport and biodegradation of glyphosate at different levels of soil organization and under different agricultural managements, and its impact on soil microbial communities.
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Affiliation(s)
- María Celina Zabaloy
- Centro de Recursos Naturales Renovables de la Zona Semiárida (CERZOS), Universidad Nacional del Sur (UNS)-CONICET, Bahía Blanca, Argentina
- Departamento de Agronomía, Universidad Nacional del Sur, Bahía Blanca, Argentina
| | - Marco Allegrini
- Instituto de Investigaciones en Ciencias Agrarias de Rosario (IICAR), CONICET, Universidad Nacional de Rosario, Zavalla, Argentina
| | - Keren Hernandez Guijarro
- Instituto Nacional de Tecnología Agropecuaria (INTA), Unidad Integrada Estación Experimental Agropecuaria Balcarce, Balcarce, Argentina
| | - Filipe Behrends Kraemer
- Cátedra de Manejo y Conservación de Suelos, Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina
- Instituto de Suelos-CIRN-INTA, Hurlingham, Argentina
| | - Héctor Morrás
- Instituto de Suelos-CIRN-INTA, Hurlingham, Argentina
- Facultad de Ciencias Agrarias y Veterinaria, Universidad del Salvador, Pilar, Argentina
| | - Leonardo Erijman
- Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr Héctor N. Torres" (INGEBI-CONICET), Vuelta de Obligado 2490, C1428ADN, Buenos Aires, Argentina.
- Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.
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12
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Alba LM, Esmeralda M, Jaime V. Enhanced Biodegradation of Phenylurea Herbicides by Ochrobactrum anthrophi CD3 Assessment of Its Feasibility in Diuron-Contaminated Soils. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19031365. [PMID: 35162387 PMCID: PMC8835586 DOI: 10.3390/ijerph19031365] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/21/2022] [Accepted: 01/22/2022] [Indexed: 12/04/2022]
Abstract
The phenylurea herbicides are persistent in soil and water, making necessary the de-velopment of techniques for their removal from the environment. To identify new options in this regard, bacterial strains were isolated from a soil historically managed with pesticides. Ochrobactrum anthropi CD3 showed the ability to remove completely herbicides such as diuron, linuron, chlorotoluron and fluometuron from aqueous solution, and up to 89% of isoproturon. In the case of diuron and linuron, their main metabolite, 3,4-dichloroaniline (3,4-DCA), which has a higher toxicity than the parent compounds, was formed, but remained in solution without further degradation. O. anthropi CD3 was also tested for bioremediation of two different agricultural soils artificially contaminated with diuron, employing bioremediation techniques: (i) biostimulation, using a nutrient solution (NS), (ii) bioaugmentation, using O. anthropi CD3, and iii) bioavailability enhancement using 2-hydroxypropyl-β-cyclodextrin (HPBCD). When bioaugmentation and HPBCD were jointly applied, 50% of the diuron initially added to the soil was biodegraded in a range from 4.7 to 0.7 d. Also, 3,4-DCA was degraded in soil after the strain was inoculated. At the end of the soil biodegradation assay an ecotoxicity test confirmed that after inoculating O. anthropi CD3 the toxicity was drastically reduced.
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13
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Liu L, Rao L, Hu J, Zhou W, Li B, Tang L. Effects of different factors on the adsorption–desorption behavior of Glyamifop and its migration characteristics in agricultural soils across China. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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14
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Jiang L, Pan B, Liang J, Wang B, Yang Y, Lin Y. Earthworm casts restrained the accumulation and phytotoxicity of soil glyphosate to cowpea (Vigna unguiculata (L.) Walp.) plants. CHEMOSPHERE 2021; 279:130571. [PMID: 33878696 DOI: 10.1016/j.chemosphere.2021.130571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/06/2021] [Accepted: 04/10/2021] [Indexed: 06/12/2023]
Abstract
The heavy use of glyphosate during the cultivation of glyphosate-resistant crops, would trigger the so called "pseudo-persistent" glyphosate in soil, thereby threatening agricultural environment, crop production, and human health through food safety. Such that, there is pressing need for the development of strategies for the effective management of glyphosate contamination in soil to promote cleaner agricultural production. In this study, as witnessed via characterizing the bioavailability and phytotoxicity of glyphosate to cowpea plants in soils applied with or without earthworm casts (EWCs), EWCs could significantly facilitate glyphosate desorption from soil, thus enhance its bioaccessibility, nonetheless, sharply decreased rather than increased the accumulation of glyphosate in cowpea plants via reducing the residue pool of glyphosate in the soil. Consequently, in comparison with the glyphosate-alone group, EWCs involvement triggered the increase of chlorophyll content, alleviation of ROS accumulation and lipid peroxidation of membrane, and in turn reduced the activity of a series of stress-tolerance enzymes by means of down-regulating the expression of the corresponding mRNA; ultimately, helped plants to reverse the glyphosate-induced growth suppression. Our findings demonstrated that, EWCs were promising candidate for the cost-effective and easy-to-operate remediation and reuse of glyphosate-contaminated soil, while also being able to improve the quality of the cultivated land and promote crop growth and resistance as a nutrients supplier.
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Affiliation(s)
- Lei Jiang
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; Key Laboratory of Integrated Pest Management on Tropical Crops, Ministry of Agriculture, Haikou, 571101, China
| | - Bo Pan
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
| | - Jingqi Liang
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, 163319, China
| | - Bingjie Wang
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
| | - Yi Yang
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; Key Laboratory of Integrated Pest Management on Tropical Crops, Ministry of Agriculture, Haikou, 571101, China
| | - Yong Lin
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China.
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15
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Nguyen DC, Vezentsev AI, Sokolovskiy PV, Greish AA. Adsorption of Glyphosate on Carbon-Containing Materials. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2021. [DOI: 10.1134/s0036024421060194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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16
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Immobilization of Cd, Pb and Zn through Organic Amendments in Wastewater Irrigated Soils. SUSTAINABILITY 2021. [DOI: 10.3390/su13042392] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Due to the scarcity of water, raw sewage effluents are often used to irrigate arable suburban soils in developing countries, which causes soil contamination with toxic metals. Soil microorganisms involved in biochemical transformations are sensitive to heavy metals contamination. The study was designed to investigate the effect of organic amendments on the microbial activity of cadmium (Cd), lead (Pb) and zinc (Zn) fractions and their bioavailability in soils contaminated with wastewater irrigation. Three metal contaminated soils under wastewater irrigation were collected, ground, sieved and added to incubation jars. Two organic amendments: wheat straw and chickpea straw, were applied (1% w/w) to the soil before incubation for 84 days at 25 °C. The CO2-C evolution after 1, 2, 3, 5, 7, 10 and 14 days was measured and thereafter was also measured weekly. Soil samples collected at 0, 14, 28, 42, 56, 70 and 84 days after incubation were analyzed for microbial biomass carbon (MBC). Sequential extraction for metal fractionation of samples was carried out collected at 0, 28, 56 and 84 days. Three soils differed significantly in evolved MBC and ∑CO2-C. Chickpea straw addition significantly increased soil MBC as compared to the wheat straw. Organic amendments significantly increased ∑CO2-C evolution from the soils, which was higher from chickpea straw. The addition of crop residues did not affect total Pb, Cd and Zn contents in soils. The concentration of exchangeable, carbonate bound and residual fractions of Pb, Cd and Zn decreased (6–27%), while the organic matter bound fraction increased (4–75%) with straw addition. Overall, the organic amendments improved microbial activity and reduce the bioavailability of toxic metals in wastewater irrigated soils. Furthermore, organic amendments not only reduce economic losses as they are cheap to produce but also minimize human health risks from heavy metals by hindering their entry into the food chain.
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17
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Guo F, Zhou M, Xu J, Fein JB, Yu Q, Wang Y, Huang Q, Rong X. Glyphosate adsorption onto kaolinite and kaolinite-humic acid composites: Experimental and molecular dynamics studies. CHEMOSPHERE 2021; 263:127979. [PMID: 32841877 DOI: 10.1016/j.chemosphere.2020.127979] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/07/2020] [Accepted: 08/09/2020] [Indexed: 06/11/2023]
Abstract
Glyphosate (PMG) has been the most widely used herbicide in the world, and its environmental mobility and fate are mainly controlled by interactions with mineral surfaces. In soil systems, kaolinite is typically associated with humic acids (HAs) in the form of mineral-HA complexes, and hence it is crucial to characterize the molecular-scale interactions that occur between PMG and kaolinite and kaolinite-HA complexes. Batch experiments, Fourier transform infrared spectrum (FTIR) and X-ray photoelectron spectroscopy (XPS), isothermal titration calorimetry (ITC), and molecular dynamics (MD) simulations were performed to decipher the molecular interactions between PMG and kaolinite and kaolinite-HA composites. Our results reveal that kaolinite-HA composites adsorb higher concentrations of PMG than does kaolinite alone, likely due to more adsorption sites existed on kaolinite-HA than on kaolinite. FTIR and XPS analysis reveal that the carboxyl, phosphonyl and amino groups of PMG interacted with kaolinite and kaolinite-humic acid via Hydrogen bonds. The ITC results and interaction energy calculations indicate that the adsorption of PMG onto the kaolinite-HA is more energetically favorable relative to that onto kaolinite. MD simulations suggest that the PMG molecule adsorbs parallel to the surface of kaolinite and the composites through hydrogen bonding. Humic acid increases the adsorption of PMG through the creation of H-bond networks between PMG, the kaolinite surface, and humic acid. The results from this study improve our molecular-level understanding of the interactions between PMG and two important components of soil systems, and hence yield valuable information for characterizing the fate and behavior of PMG in soil environments.
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Affiliation(s)
- Fayang Guo
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Min Zhou
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jingcheng Xu
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, 516 Jun Gong Road, Shanghai, 200093, PR China
| | - Jeremy B Fein
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Qiang Yu
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Yingwei Wang
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, China
| | - Qiaoyun Huang
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xingmin Rong
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.
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18
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Jarrell ZR, Ahammad MU, Benson AP. Glyphosate-based herbicide formulations and reproductive toxicity in animals. Vet Anim Sci 2020; 10:100126. [PMID: 32734026 PMCID: PMC7386766 DOI: 10.1016/j.vas.2020.100126] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 06/17/2020] [Accepted: 06/18/2020] [Indexed: 01/16/2023] Open
Abstract
The adoption of genetically engineered (GE) crops in agriculture has increased dramatically over the last few decades. Among the transgenic plants, those tolerant to the herbicide glyphosate are among the most common. Weed resistance to glyphosate-based herbicides (GBHs) has been on the rise, leading to increased herbicide applications. This, in turn, has led to increased glyphosate residues in feed. Although glyphosate has been considered to be generally safe to animal health, recent studies have shown that GBHs have potential to cause adverse effects in animal reproduction, including disruption of key regulatory enzymes in androgen synthesis, alteration of serum levels of estrogen and testosterone, damage to reproductive tissues and impairment of gametogenesis. This review emphasizes known effects of GBHs on reproductive health as well as the potential risk GBH residues pose to animal agriculture.
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Affiliation(s)
| | - Muslah Uddin Ahammad
- Department of Poultry Science, University of Georgia, Athens, GA 30602, United States
| | - Andrew Parks Benson
- Department of Poultry Science, University of Georgia, Athens, GA 30602, United States
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19
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Mielke KC, Mendes KF, do Nascimento JLM, Adriano RC, Ferreira LR, Tornisielo VL. Fertiactyl® in mixture with glyphosate decreases herbicide absorption and translocation in coffee seedlings. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2020; 56:10-15. [PMID: 33043792 DOI: 10.1080/03601234.2020.1831860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The application of glyphosate to coffee crops can cause injuries to plants. Fertiactyl® foliar fertilizer reduces injuries when mixed with glyphosate; however, it is important to establish which mechanisms are responsible for this protective action. This study aimed to evaluate the absorption and translocation of glyphosate applied separately and in mixture with Fertiactyl® in coffee seedlings. Absorption and translocation were performed with 14C-glyphosate applied separately and in mixture with Fertiactyl® at 0, 6, 12, 24, 48, 96, and 144 hours after application (HAA). Most of the 14C-glyphosate applied to coffee seedlings was not absorbed. The 14C-glyphosate applied separately had a higher absorption by coffee seedlings (6.5%) than in a mixture with Fertiactyl® (2.7%) at 144 HAA. The maximum translocation of the 14C-glyphosate applied separately was 0.69% at 81.2 HAA and in mixture with Fertiactyl® was 0.41% at 41.2 HAA. The treated leaves retained a higher percentage of 14C-glyphosate when applied separately (5.6% at 144 HAA) than in a mixture with Fertiactyl® (2.2% at 144 HAA). Low translocation (<1%) for the rest of the plant shoots was observed both for the 14C-glyphosate applied separately and in combination with Fertiactyl®. Therefore, Fertiactyl® decreased the absorption and translocation of 14C-glyphosate in coffee seedlings.
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20
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Galaço ARBS, Jesus LT, Freire RO, de Oliveira M, Serra OA. Experimental and Theoretical Studies of Glyphosate Detection in Water by an Europium Luminescent Complex and Effective Adsorption by HKUST-1 and IRMOF-3. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:9664-9672. [PMID: 32786836 DOI: 10.1021/acs.jafc.0c03574] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Designing an effective and simple detection method to quantify glyphosate (GLY) herbicide is desirable. Current chromatography-mass spectrometry and electrochemical methods can be used for this purpose, but these methods are difficult to be made portable and need high-cost equipment. Here, we evaluate a luminescent β-diketonate-Eu-ethylenediaminetetraacetic acid complex for GLY quantification in aqueous media on the basis of the luminescent quenching process. This complex successfully measured GLY at concentrations ranging from 5 × 10-7 to 10-5 mol L-1. Theoretical methods (LUMPAC) are also performed to identify the complex most probable structure in solution. We also demonstrate that the metal-organic frameworks HKUST-1 and IRMOF-3, easily synthesized, effectively adsorb GLY in water in about 30 min of contact.
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Affiliation(s)
- Ayla R B S Galaço
- Chemistry Department, Faculty of Philosophy, Sciences and Letters at Ribeirão Preto (FFCLRP), University of São Paulo, Avenida Bandeirantes 3900, 14040-901 Ribeirão Preto, São Paulo, Brazil
| | - Larissa T Jesus
- Pople Computational Chemistry Laboratory, Chemistry Department, Federal University of Sergipe, 49100-000 Aracaju, Sergipe, Brazil
| | - Ricardo O Freire
- Pople Computational Chemistry Laboratory, Chemistry Department, Federal University of Sergipe, 49100-000 Aracaju, Sergipe, Brazil
| | - Marcos de Oliveira
- São Carlos Institute of Physics, University of São Paulo, Avenida Trabalhador São Carlense 400, 13566-590 São Carlos, São Paulo, Brazil
| | - Osvaldo A Serra
- Chemistry Department, Faculty of Philosophy, Sciences and Letters at Ribeirão Preto (FFCLRP), University of São Paulo, Avenida Bandeirantes 3900, 14040-901 Ribeirão Preto, São Paulo, Brazil
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21
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Muskus AM, Krauss M, Miltner A, Hamer U, Nowak KM. Degradation of glyphosate in a Colombian soil is influenced by temperature, total organic carbon content and pH. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 259:113767. [PMID: 31887598 DOI: 10.1016/j.envpol.2019.113767] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 12/06/2019] [Accepted: 12/07/2019] [Indexed: 06/10/2023]
Abstract
Glyphosate is one of the most used herbicides in the world. The fate of glyphosate in tropical soils may be different from that in soils from temperate regions. In particular, the amounts and types of non-extractable residues (NER) may differ considerably, resulting in different relative contributions of xenoNER (sorbed and sequestered parent compound) and bioNER (biomass residues of degraders). In addition, environmental conditions and agricultural practices leading to total organic carbon (TOC) or pH variation can alter the degradation of glyphosate. The aim of this study is thus to investigate how the glyphosate degradation and turnover are influenced by varying temperature, pH and TOC of sandy loam soil from Colombia. The pH or TOC of a Colombian soil was modified to yield five treatments: control (pH 7.0, TOC 3%), 4% TOC, 5% TOC, pH 6.5, and pH 5.5. Each treatment received 50 mg kg-1 of 13C315N-glyphosate and was incubated at 10 °C, 20 °C and 30 °C for 40 days. Rising temperature increased the mineralization of 13C315N-glyphosate from 13 to 20% (10 °C) to 32-39% (20 °C) and 41-51% (30 °C) and decreased the amounts of extractable 13C315N-glyphosate after 40 days of incubation from 13 to 26% (10 °C) to 4.6-12% (20 °C) and 1.2-3.2% (30 °C). Extractable 13C315N-glyphosate increased with higher TOC and higher pH. Total 13C-NER were similar in all treatments and at all temperatures (47%-60%), indicating that none of the factors studied affected the amount of total 13C-NER. However, 13C-bioNER dominated within the 13C-NER pool in the control and the 4% TOC treatment (76-88% of total 13C-NER at 20 °C and 30 °C), whereas in soil with 5% TOC and pH 6.5 or 5.5 13C-bioNER were lower (47-61% at 20 °C and 30 °C). In contrast, the 15N-bioNER pool was small (between 14 and 39% of the 15N-NER). Thus, more than 60% of 15N-NER is potentially hazardous xenobiotic NER which need careful attention in the future.
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Affiliation(s)
- Angelica M Muskus
- UFZ - Helmholtz-Centre for Environmental Research, Department of Environmental Biotechnology, Permoserstr. 15, 04318, Leipzig, Germany; Institute of Landscape Ecology, University of Münster, Heisenbergstr. 2, 48149, Münster, Germany; Pontifical Bolivarian University, Environmental Engineering Faculty, Km 7 Vía Piedecuesta, Bucaramanga, Colombia
| | - Martin Krauss
- UFZ - Helmholtz-Centre for Environmental Research, Department of Effect-Directed Analysis, Permoserstr. 15, 04318, Leipzig, Germany
| | - Anja Miltner
- UFZ - Helmholtz-Centre for Environmental Research, Department of Environmental Biotechnology, Permoserstr. 15, 04318, Leipzig, Germany
| | - Ute Hamer
- Institute of Landscape Ecology, University of Münster, Heisenbergstr. 2, 48149, Münster, Germany
| | - Karolina M Nowak
- Chair of Geobiotechnology, Technische Universität Berlin, Ackerstraße 76, 13355, Berlin, Germany.
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Caceres-Jensen L, Rodríguez-Becerra J, Sierra-Rosales P, Escudey M, Valdebenito J, Neira-Albornoz A, Dominguez-Vera V, Villagra CA. Electrochemical method to study the environmental behavior of Glyphosate on volcanic soils: Proposal of adsorption-desorption and transport mechanisms. JOURNAL OF HAZARDOUS MATERIALS 2019; 379:120746. [PMID: 31276919 DOI: 10.1016/j.jhazmat.2019.120746] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 04/27/2019] [Accepted: 06/06/2019] [Indexed: 06/09/2023]
Abstract
Glyphosate is used extensively worldwide, but current evidence suggests detrimental effects on the environment, pollinators, and human health. Glyphosate adsorption kinetics and adsorption/desorption were studied through batch sorption experiments in ten typical volcanic ash-derived soils from Andisol and Ultisol orders. Two kinetic models were used to fit the experimental data: i. Models that allowed establishment of principally kinetic parameters and modeling of the adsorption process, and ii. Models described solute transport mechanisms commonly used for remediation purposes. Adsorption kinetic data were best fitted by the pseudo-second-order kinetic model and Two-Site Nonequilibrium model. These models suggest that mechanisms are complex due to rapid surface adsorption in ultisols with mass transfer controlling adsorption kinetics across the boundary layer, as indicated by the highhand lowt1/2values. High intraparticle diffusion into macropores and micropores was observed for Andisols. The Freundlich model accurately represented adsorption equilibrium data in all cases (R2 > 0.9580) with comparatively higher adsorption capacity on Andisols. Kf values (2.50-52.28 μg1-1/n mL1/n g-1) and hysteresis were significant in all studied soils. Taken together, these data suggest that Glyphosate may be adsorbed more on Andisol soils in comparison to Ultisols.
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Affiliation(s)
- Lizethly Caceres-Jensen
- Laboratorio de Fisicoquímica & Analítica, Departamento de Química, Facultad de Ciencias Básicas, Universidad Metropolitana de Ciencias de la Educación, Avenida José Pedro Alessandri 774, Santiago, Chile.
| | - Jorge Rodríguez-Becerra
- Laboratorio de Fisicoquímica & Analítica, Departamento de Química, Facultad de Ciencias Básicas, Universidad Metropolitana de Ciencias de la Educación, Avenida José Pedro Alessandri 774, Santiago, Chile
| | - Paulina Sierra-Rosales
- Programa Institucional de Fomento a la Investigación, Desarrollo e Innovación, Universidad Tecnológica Metropolitana, Ignacio Valdivieso 2409, P.O Box 8940577, San Joaquín, Santiago, Chile
| | - Mauricio Escudey
- Facultad de Química y Biología, Universidad de Santiago de Chile, Avenida Alameda Libertador Bernardo O'Higgins 3363, Santiago, Chile; Center for the Development of Nanoscience and Nanotechnology, CEDENNA, 9170124, Santiago, Chile
| | - Jennifer Valdebenito
- Laboratorio de Fisicoquímica & Analítica, Departamento de Química, Facultad de Ciencias Básicas, Universidad Metropolitana de Ciencias de la Educación, Avenida José Pedro Alessandri 774, Santiago, Chile
| | - Angelo Neira-Albornoz
- Laboratorio de Fisicoquímica & Analítica, Departamento de Química, Facultad de Ciencias Básicas, Universidad Metropolitana de Ciencias de la Educación, Avenida José Pedro Alessandri 774, Santiago, Chile; Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santos Dumont 964, Independencia, Chile
| | - Valentina Dominguez-Vera
- Laboratorio de Fisicoquímica & Analítica, Departamento de Química, Facultad de Ciencias Básicas, Universidad Metropolitana de Ciencias de la Educación, Avenida José Pedro Alessandri 774, Santiago, Chile
| | - Cristian A Villagra
- Instituto de Entomología, Facultad de Ciencias Básicas, Universidad Metropolitana de Ciencias de la Educación, Avenida José Pedro Alessandri 774, Santiago, Chile
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Muskus AM, Krauss M, Miltner A, Hamer U, Nowak KM. Effect of temperature, pH and total organic carbon variations on microbial turnover of 13C 315N-glyphosate in agricultural soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 658:697-707. [PMID: 30580222 DOI: 10.1016/j.scitotenv.2018.12.195] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 12/12/2018] [Accepted: 12/13/2018] [Indexed: 06/09/2023]
Abstract
Glyphosate is the best-selling and the most-used broad-spectrum herbicide worldwide. Microbial conversion of glyphosate to CO2 and biogenic non-extractable residues (bioNER) leads to its complete degradation. The degradation of glyphosate may vary in different soils and it depends on environmental conditions and soil properties. To date, the influence of temperature, soil pH and total organic carbon (TOC) on microbial conversion of glyphosate to bioNER has not been investigated yet. The pH or TOC of an agricultural original soil (pH 6.6, TOC 2.1%) was modified using sulfuric acid or farmyard manure (FYM), respectively. Each treatment: original (I), 3% TOC (II), 4% TOC (III), pH 6.0 (IV) and pH 5.5 (V) was amended with 13C315N-glyphosate and incubated at 10 °C, 20 °C and 30 °C for 39 days. The temperature was the main factor controlling the mineralization and the extractable 13C315N-glyphosate, whereas higher TOC content and lower pH resulted in enhanced formation of 13C-bioNER. After 39 days the cumulative mineralization of 13C-glyphosate was in the range of 12-22% (10 °C), 37-47% (20 °C) and 43-54% (30 °C). Extractable residues of 13C-glyphosate were in the range of 10-21% (10 °C) and 4-10% (20 °C and 30 °C); whereas those of 15N-glyphosate were as follows 20-32% (10 °C) and 12-25% (20 °C and 30 °C). The 13C-NER comprised about 53-69% of 13C-mass balance in soils incubated at 10 °C, but 40-50% in soils incubated at 20 °C and 30 °C. The 15N-NER were higher than the 13C-NER and varied between 62% and 74% at 10 °C, between 53% and 81% at 20 °C and 30 °C. A major formation of 13C-bioNER (72-88% of 13C-NER) at 20 °C and 30 °C was noted in soil amended with FYM. An increased formation of 15N-bioNER (14-17% of 15N-NER) was also observed in FYM-amended soil. The xenobiotic 15N-NER had a major share within the 15N-NER and thus need to be considered when assessing the environmental risk of glyphosate-NER.
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Affiliation(s)
- Angelica M Muskus
- Helmholtz-Centre for Environmental Research - UFZ, Department of Environmental Biotechnology, Permoserstr. 15, 04318 Leipzig, Germany; Institute of Landscape Ecology, University of Münster, Heisenbergstr. 2, 48149 Münster, Germany; Pontifical Bolivarian University, Environmental Engineering Faculty, Km 7 Vía Piedecuesta, Bucaramanga, Colombia
| | - Martin Krauss
- Helmholtz-Centre for Environmental Research - UFZ, Department of Effect-Directed Analysis, Permoserstr. 15, 04318 Leipzig, Germany
| | - Anja Miltner
- Helmholtz-Centre for Environmental Research - UFZ, Department of Environmental Biotechnology, Permoserstr. 15, 04318 Leipzig, Germany
| | - Ute Hamer
- Institute of Landscape Ecology, University of Münster, Heisenbergstr. 2, 48149 Münster, Germany
| | - Karolina M Nowak
- Chair of Geobiotechnology, Technische Universität Berlin, Ackerstraße 76, 13355 Berlin, Germany.
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Wang D, Xue MY, Wang YK, Zhou DZ, Tang L, Cao SY, Wei YH, Yang C, Liang DL. Effects of straw amendment on selenium aging in soils: Mechanism and influential factors. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 657:871-881. [PMID: 30677952 DOI: 10.1016/j.scitotenv.2018.12.021] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 11/30/2018] [Accepted: 12/03/2018] [Indexed: 06/09/2023]
Abstract
Soil dissolved organic matter (DOM) alters heavy metal availability, but whether straw amendment can manipulate soil selenium (Se) speciation and availability through DOM mineralization remains unclear. In this study, allochthonous maize straw and selenate were incubated together in four different soils for 1 y. The transformation and availability of DOM associated Se (DOM-Se) was investigated during aging. Results indicated that soil solution and soil particle surfaces were dominated by hexavalent hydrophilic acid-bound Se (Hy-Se). The amount of fulvic acid bound Se in soil solution (SOL-FA-Se) was higher than humic acid bound Se in soil solution (SOL-HA-Se), except in krasnozems, and mainly existed as hexavalent Se (Se(VI)). Tetravalent Se (Se(IV)) was the main valence state of FA-Se adsorbed on soil particle surfaces (EX-FA-Se) after 5 w of aging. The proportion of soil-available Se (SOL + EX-Se) decreased with increasing straw rate. However, under an application rate of 7500 kg·hm-2, soluble Se fraction (SOL-Se) reduction was minimal in acidic soils (18.7%-34.7%), and the organic bound Se fraction (OM-Se) was maximally promoted in alkaline soils (18.2%-39.1%). FA and HON could enhance the availability of Se in the soil solution and on particle surfaces of acidic soil with high organic matter content. While Se incorporation with HA could accelerate the fixation of Se into the solid phase of soil. Three mechanisms were involved in DOM-Se aging: (1) Reduction, ligand adsorption, and inner/outer-sphere complexation associated with the functional groups of straw-derived DOM, including hydroxyls, carboxyl, methyl, and aromatic phenolic compounds; (2) interconnection of EX-FA-Se between non-residual and residual Se pools; and (3) promotion by soil electrical conductivity (EC), clay, OM, and straw application. The dual effect of DOM on Se aging was highly reliant on the characteristics of the materials and soil properties. In conclusion, straw amendment could return selenium in soil and reduce soluble Se loss.
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Affiliation(s)
- Dan Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ming-Yue Xue
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ying-Kun Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - De-Zhi Zhou
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Li Tang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Sheng-Yan Cao
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yu-Hong Wei
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Chen Yang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Dong-Li Liang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China.
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25
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Albers CN, Ernstsen V, Johnsen AR. Soil Domain and Liquid Manure Affect Pesticide Sorption in Macroporous Clay Till. JOURNAL OF ENVIRONMENTAL QUALITY 2019; 48:147-155. [PMID: 30640346 DOI: 10.2134/jeq2018.06.0222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Pesticides frequently leach through clayey tills, even when they are expected to be strongly adsorbed. In this study, we observed that sorption of two strongly sorbing pesticides, tebuconazole and glyphosate, varied by more than an order of magnitude across soil domains in 5-m-deep clay till profiles with biopores and fractures. Eight soil domains were identified in each of the profiles: five matrix soils and three in the macropores. Tebuconazole sorption was controlled by soil organic matter content, except in the reduced matrix, which was low in organic matter, where there was surprisingly high sorption. Glyphosate showed high variation in sorption between fractures and matrix soil from the same depths. The domain-specific sorption of both tebuconazole and glyphosate was, however, overruled by dilute liquid manure. Sorption of tebuconazole was, as expected, decreased by liquid manure in several domains, but tebuconazole sorption increased in a few domains due to sorption of the manure-derived organic matter itself. Liquid manure unexpectedly had a greater effect on glyphosate sorption, which was strongly decreased by dissolved organic matter and phosphate in the manure. The variation in sorption across domains, as well as the effects of liquid manure, should be taken into account when assessing leaching risks.
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26
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Weng Z, Rose MT, Tavakkoli E, Van Zwieten L, Styles G, Bennett W, Lombi E. Assessing plant-available glyphosate in contrasting soils by diffusive gradient in thin-films technique (DGT). THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 646:735-744. [PMID: 30064100 DOI: 10.1016/j.scitotenv.2018.07.221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 07/10/2018] [Accepted: 07/16/2018] [Indexed: 06/08/2023]
Abstract
Glyphosate represents one quarter of global herbicide sales, with growing interest in both its fate in soils and potential to cause non-target phytotoxicity to plants. However, assessing glyphosate bioavailability to plants from soil residues remains challenging. Here we demonstrate that the diffusive gradient in thin-films technique (DGT) can effectively measure available glyphosate across boundary conditions typical of the soil environment: pH 4-9, P concentrations of 20-300 μg P L-1 and NaHCO3 concentrations of 10-1800 mg L-1. In this study, four soils with different glyphosate sorption properties were dosed with up to 16 mg kg-1 of glyphosate and phytotoxicity to wheat and lupin was measured against the DGT-glyphosate concentrations. An improved dose response curve was obtained for root elongation of wheat and lupin across soil types when DGT-glyphosate was used instead of alkaline-extractable (i.e., total extractable) glyphosate. Total extractable glyphosate concentrations of 2.6 and 5.0 mg glyphosate kg-1 in the sandy Tenosol, equivalent to 2.9 and 6.5 μg L-1 DGT-extractable glyphosate, reduced the root length of lupins (but not wheat) by 32-36% compared with the untreated control. DGT is therefore a promising method for assessing phytotoxic levels of glyphosate across different soils.
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Affiliation(s)
- Zhe Weng
- NSW Department of Primary Industries, Wagga Wagga Agricultural Institute, Wagga Wagga, NSW 2650, Australia
| | - Michael T Rose
- NSW Department of Primary Industries, Wollongbar Primary Industries Institute, Wollongbar, NSW 2477, Australia
| | - Ehsan Tavakkoli
- NSW Department of Primary Industries, Wagga Wagga Agricultural Institute, Wagga Wagga, NSW 2650, Australia; Graham Centre for Agricultural Innovation, Charles Sturt University, Wagga Wagga, NSW 2650, Australia; School of Agriculture, Food and Wine, Waite Campus, University of Adelaide, PMB1, Glen Osmond, South Australia 5064, Australia.
| | - Lukas Van Zwieten
- NSW Department of Primary Industries, Wollongbar Primary Industries Institute, Wollongbar, NSW 2477, Australia; School of Chemistry, Monash University, Clayton, VIC 3800, Australia
| | - Gavin Styles
- School of Chemistry, Monash University, Clayton, VIC 3800, Australia
| | - William Bennett
- Environmental Futures Research Institute, School of Environment and Science, Griffith University, Southport, QLD 4215, Australia
| | - Enzo Lombi
- Future Industries Institute, University of South Australia, Mawson Lakes, SA 5095, Australia
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Garba J, Samsuri AW, Othman R, Ahmad Hamdani MS. Adsorption-desorption and leaching potential of glyphosate and aminomethylphosphonic acid in acidic Malaysian soil amended with cow dung and rice husk ash. ENVIRONMENTAL MONITORING AND ASSESSMENT 2018; 190:676. [PMID: 30368595 DOI: 10.1007/s10661-018-7034-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Accepted: 10/08/2018] [Indexed: 06/08/2023]
Abstract
This study investigates adsorption-desorption and the leaching potential of glyphosate and aminomethylphosphonic acid (AMPA) in control and amended-addition of cow dung or rice husk ash-acidic Malaysian soil with high oxide mineral content. The addition of cow dung or rice husk ash increased the adsorptive removal of AMPA. The isotherm data of glyphosate and AMPA best fitted the Freundlich model. The constant Kf for glyphosate was high in the control soil (544.873 mg g-1) followed by soil with cow dung (482.451 mg g-1) then soil with rice husk ash (418.539 mg g-1). However, for AMPA, soil with cow dung was high (166.636 mg g-1) followed by soil with rice husk ash (137.570 mg g-1) then the control soil (48.446 mg g-1). The 1/n values for both glyphosate and AMPA adsorptions were < 1 indicating their strong affinity for adsorbents. Desorption of both glyphosate and AMPA occurred only in the control soil. The compounds were not detected in soils with added cow dung or rice husk ash. The addition of cow dung or rice husk ash increased glyphosate mobility. However, ground water ubiquity scores for both control and amended soils were < 2.8. This indicated glyphosate is a transitional herbicide; therefore, its leaching potential in the soil is low, despite the addition of cow dung or rice husk ash. Addition of these wastes decreased the mobility and leaching potential of AMPA. The addition of cow dung or rice husk ash could be beneficial in increasing adsorption and enhancing degradation of these compounds.
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Affiliation(s)
- Jamilu Garba
- Department of Agricultural Education, Zamfara State College of Education, Maru, Zamfara, 1002, Nigeria.
| | - Abd Wahid Samsuri
- Department of Land Management, Faculty of Agriculture, Universiti Putra Malaysia, UPM, 43400, Serdang, Selangor, Malaysia
| | - Radziah Othman
- Department of Land Management, Faculty of Agriculture, Universiti Putra Malaysia, UPM, 43400, Serdang, Selangor, Malaysia
| | - Muhammad Saiful Ahmad Hamdani
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, UPM, 43400, Serdang, Selangor, Malaysia
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28
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Glyphosate Transport in Two Louisiana Agricultural Soils: Miscible Displacement Studies and Numerical Modeling. SOIL SYSTEMS 2018. [DOI: 10.3390/soilsystems2030053] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Glyphosate (N-(phosphonomethyl) glycine) (GPS) is currently the most commonly used herbicide worldwide, and is generally considered as immobile in soils. However, numerous reports of the environmental occurrence of the herbicide coupled with recent evidence of human toxicity necessitate further investigation as to the behavior of GPS in the soil environment. Batch sorption studies along with miscible displacement experiments were carried out in order to assess the mobility of GPS in two Louisiana agricultural soils; Commerce silt loam and Sharkey clay. Batch results indicated a high affinity of both soils for solvated GPS, with greater affinity observed by the Sharkey soil. GPS sorption in the Commerce soil was most likely facilitated by the presence of amorphous Fe and Al oxides, whereas the high cation exchange capacity of the Sharkey soil likely allows for GPS complexation with surface exchangeable poly-valent cations. Miscible displacement studies indicate that GPS mobility is highly limited in both soils, with 3% and 2% of the applied herbicide mass recovered in the effluent solution from the Commerce and Sharkey soils, respectively. A two-site multi-reaction transport model (MRTM) adequately described GPS breakthrough from both soils and outperformed linear modeling efforts using CXTFIT. Analysis of extracted herbicide residues suggests that the primary metabolite of GPS, aminomethylphosphonic acid (AMPA), is more mobile in both soils, although both compounds are strongly retained.
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Nguyen NK, Dörfler U, Welzl G, Munch JC, Schroll R, Suhadolc M. Large variation in glyphosate mineralization in 21 different agricultural soils explained by soil properties. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 627:544-552. [PMID: 29426177 DOI: 10.1016/j.scitotenv.2018.01.204] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 01/18/2018] [Accepted: 01/20/2018] [Indexed: 06/08/2023]
Abstract
Glyphosate and its main metabolite aminomethylphosphonic acid (AMPA) have frequently been detected in surface water and groundwaters. Since adequate glyphosate mineralization in soil may reduce its losses to environment, improved understanding of site specific factors underlying pesticide mineralization in soils is needed. The aim of this study was to investigate the relationship between soil properties and glyphosate mineralization. To establish a sound basis for resilient correlations, the study was conducted with a large number of 21 agricultural soils, differing in a variety of soil parameters, such as soil texture, soil organic matter content, pH, exchangeable ions etc. The mineralization experiments were carried out with 14C labelled glyphosate at a soil water tension of -15 kPa and at a soil density of 1.3 g cm-3 at 20 ± 1 °C for an incubation period of 32 days. The results showed that the mineralization of glyphosate in different agricultural soils varied to a great extent, from 7 to 70% of the amount initially applied. Glyphosate mineralization started immediately after application, the highest mineralization rates were observed within the first 4 days in most of the 21 soils. Multiple regression analysis revealed exchangeable acidity (H+ and Al3+), exchangeable Ca2+ ions and ammonium lactate extractable K to be the key soil parameters governing glyphosate mineralization in the examined soils. A highly significant negative correlation between mineralized glyphosate and NaOH-extractable residues (NaOH-ER) in soils strongly suggests that NaOH-ER could be used as a simple and reliable parameter for evaluating the glyphosate mineralization capacity. The NaOH-ER were composed of glyphosate, unknown 14C-residues, and AMPA (12%-65%, 3%-34%, 0%-11% of applied 14C, respectively). Our results highlighted the influential role of soil exchangeable acidity, which should therefore be considered in pesticide risk assessments and management to limit efficiently the environmental transfers of glyphosate.
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Affiliation(s)
- Nghia Khoi Nguyen
- Cantho University, Department of Soil Science, Cantho City, Viet Nam; Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany
| | - Ulrike Dörfler
- Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany
| | - Gerhard Welzl
- Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany
| | - Jean Charles Munch
- Technische Universität München, Wissenschaftszentrum Weihenstephan für Ernährung, Landnutzung und Umwelt, 85354 Freising, Germany
| | - Reiner Schroll
- Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany
| | - Marjetka Suhadolc
- University of Ljubljana, Biotechnical Faculty, Jamnikarjeva 101, 1000 Ljubljana, Slovenia.
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Okada E, Pérez D, De Gerónimo E, Aparicio V, Massone H, Costa JL. Non-point source pollution of glyphosate and AMPA in a rural basin from the southeast Pampas, Argentina. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:15120-15132. [PMID: 29556978 DOI: 10.1007/s11356-018-1734-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 03/13/2018] [Indexed: 06/08/2023]
Abstract
We measured the occurrence and seasonal variations of glyphosate and its metabolite, aminomethylphosphonic acid (AMPA), in different environmental compartments within the limits of an agricultural basin. This topic is of high relevance since glyphosate is the most applied pesticide in agricultural systems worldwide. We were able to quantify the seasonal variations of glyphosate that result mainly from endo-drift inputs, that is, from direct spraying either onto genetically modified (GM) crops (i.e., soybean and maize) or onto weeds in no-till practices. We found that both glyphosate and AMPA accumulate in soil, but the metabolite accumulates to a greater extent due to its higher persistence. Knowing that glyphosate and AMPA were present in soils (> 93% of detection for both compounds), we aimed to study the dispersion to other environmental compartments (surface water, stream sediments, and groundwater), in order to establish the degree of non-point source pollution. Also, we assessed the relationship between the water-table depth and glyphosate and AMPA levels in groundwater. All of the studied compartments had variable levels of glyphosate and AMPA. The highest frequency of detections was found in the stream sediments samples (glyphosate 95%, AMPA 100%), followed by surface water (glyphosate 28%, AMPA 50%) and then groundwater (glyphosate 24%, AMPA 33%). Despite glyphosate being considered a molecule with low vertical mobility in soils, we found that its detection in groundwater was strongly associated with the month where glyphosate concentration in soil was the highest. However, we did not find a direct relation between groundwater table depth and glyphosate or AMPA detections. This is the first simultaneous study of glyphosate and AMPA seasonal variations in soil, groundwater, surface water, and sediments within a rural basin.
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Affiliation(s)
- Elena Okada
- CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina.
- INTA (Instituto Nacional de Tecnología Agropecuaria), Route 226 Km 73.5, 7620, Balcarce, Argentina.
| | - Débora Pérez
- CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina
- INTA (Instituto Nacional de Tecnología Agropecuaria), Route 226 Km 73.5, 7620, Balcarce, Argentina
| | - Eduardo De Gerónimo
- CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina
- INTA (Instituto Nacional de Tecnología Agropecuaria), Route 226 Km 73.5, 7620, Balcarce, Argentina
| | - Virginia Aparicio
- CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina
- INTA (Instituto Nacional de Tecnología Agropecuaria), Route 226 Km 73.5, 7620, Balcarce, Argentina
| | - Héctor Massone
- Instituto de Geología de Costas y del Cuaternario FCEyN (Facultad de Ciencias Exactas y Naturales), Universidad Nacional de Mar del Plata, Funes 3350, 7600, Mar del Plata, Argentina
| | - José Luis Costa
- INTA (Instituto Nacional de Tecnología Agropecuaria), Route 226 Km 73.5, 7620, Balcarce, Argentina
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Ahmed AA, Leinweber P, Kühn O. Unravelling the nature of glyphosate binding to goethite surfaces by ab initio molecular dynamics simulations. Phys Chem Chem Phys 2018; 20:1531-1539. [PMID: 29260152 DOI: 10.1039/c7cp06245a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Investigation of the interaction between glyphosate (GLP) and soil minerals is essential for understanding GLP's fate in the environment. Whereas GLP-goethite binding has been discussed extensively, the impact of water as well as of different goethite surface planes has not been studied yet. In this contribution, periodic density functional theory-based molecular dynamics simulations are applied to explore possible binding mechanisms for GLP with three goethite surface planes (010, 001, and 100) in the presence of water. The investigation included several binding motifs of monodentate (M) and bidentate (B) type. It was found that the binding stability increases in the order M@001 < M@010 < (2O + 2Fe) B@100 < M@100 < (1O + 2Fe) B@001 < (2O + 1Fe) B@010. This behavior has been traced to the presence of intramolecular H-bonds (HBs) in GLP as well as intermolecular HBs between GLP and water, GLP and goethite, and water and goethite. These interactions are accompanied by proton transfer from GLP to water and to goethite, and from water to goethite as well as water dissociation at the goethite surface. Further, it was observed that the OH- species can replace the adsorbed GLP at the goethite surface, which could explain the well-known drastic drop in GLP adsorption at high pH. The present results highlight the role of water in the GLP-goethite interaction and provide a molecular level perspective on available experimental data.
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Affiliation(s)
- Ashour A Ahmed
- Institute of Physics, University of Rostock, Albert-Einstein-Str. 23-24, D-18059 Rostock, Germany.
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32
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Zheng T, Sutton NB, de Jager P, Grosshans R, Munira S, Farenhorst A. Glyphosate (Ab)sorption by Shoots and Rhizomes of Native versus Hybrid Cattail (Typha). BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2017; 99:595-600. [PMID: 28913582 PMCID: PMC5694517 DOI: 10.1007/s00128-017-2167-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 08/22/2017] [Indexed: 06/07/2023]
Abstract
Wetlands in the Prairie Pothole Region of North America are integrated with farmland and contain mixtures of herbicide contaminants. Passive nonfacilitated diffusion is how most herbicides can move across plant membranes, making this perhaps an important process by which herbicide contaminants are absorbed by wetland vegetation. Prairie wetlands are dominated by native cattail (Typha latifolia) and hybrid cattail (Typha x glauca). The objective of this batch equilibrium study was to compare glyphosate absorption by the shoots and rhizomes of native versus hybrid cattails. Although it has been previously reported for some pesticides that passive diffusion is greater for rhizome than shoot components, this is the first study to demonstrate that the absorption capacity of rhizomes is species dependent, with the glyphosate absorption being significantly greater for rhizomes than shoots in case of native cattails, but with no significant differences in glyphosate absorption between rhizomes and shoots in case of hybrid cattails. Most importantly, glyphosate absorption by native rhizomes far exceeded that of the absorption occurring for hybrid rhizomes, native shoots and hybrid shoots. Glyphosate has long been used to manage invasive hybrid cattails in wetlands in North America, but hybrid cattail expansions continue to occur. Since our results showed limited glyphosate absorption by hybrid shoots and rhizomes, this lack of sorption may partially explain the poorer ability of glyphosate to control hybrid cattails in wetlands.
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Affiliation(s)
- Tianye Zheng
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong.
- Sub-department of Environmental Technology, Wageningen University and Research Centre, Bornse Weilanden 9, Wageningen, The Netherlands.
| | - Nora B Sutton
- Sub-department of Environmental Technology, Wageningen University and Research Centre, Bornse Weilanden 9, Wageningen, The Netherlands
| | - Pim de Jager
- Sub-department of Environmental Technology, Wageningen University and Research Centre, Bornse Weilanden 9, Wageningen, The Netherlands
| | - Richard Grosshans
- International Institute for Sustainable Development (IISD), 111 Lombard Avenue, Suite 325, Winnipeg, MB, Canada
| | - Sirajum Munira
- Department of Soil Science, University of Manitoba, 380 Ellis Building, Winnipeg, MB, Canada
| | - Annemieke Farenhorst
- Department of Soil Science, University of Manitoba, 380 Ellis Building, Winnipeg, MB, Canada
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Singh S, Kumar V, Upadhyay N, Singh J, Singla S, Datta S. Efficient biodegradation of acephate by Pseudomonas pseudoalcaligenes PS-5 in the presence and absence of heavy metal ions [Cu(II) and Fe(III)], and humic acid. 3 Biotech 2017; 7:262. [PMID: 28744429 PMCID: PMC5524630 DOI: 10.1007/s13205-017-0900-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 07/19/2017] [Indexed: 11/29/2022] Open
Abstract
The present study was intended to investigate the biodegradation of acephate in aqueous media in the presence and in the absence of metal ions [Fe(III) and Cu(II)], and humic acid (HA). Biodegradations were performed using Pseudomonas pseudoalcaligenes PS-5 (PS-5) isolated from the heavy metal polluted site. Biodegradations were monitored by UV-Visible, FTIR, and electron spray ionization-mass spectrometry (ESI-MS) analyses. ESI-MS analysis revealed that PS-5 degraded acephate to two metabolites showing intense ions at mass-to-charge ratios (m/z) 62 and 97. The observed kinetic was the pseudo-first order, and half-life periods (t1/2) were 2.79 d-1 (of PS-5 + acephate), 3.45 d-1 [of PS-5 + acephate + Fe(III)], 3.16 d-1 [of PS-5 + acephate + Cu(II)], and 5.54 d-1 (of PS-5 + acephate + HA). A significant decrease in degradation rate of acephate was noticed in the presence of HA, and the same was confirmed by UV-Visible and TGA analyses. Strong aggregation behavior of acephate with humic acid in aqueous media was the major cause behind the slow degradation rate of acephate . New results on acephate metabolism by strain PS-5 in the presence and in the absence of metal ions [Fe(III) and Cu(II)] and humic acid were obtained. Results confirmed that Pseudomonas pseudoalcaligenes strain PS-5 was capable of mineralization of the acephate without formation of toxic metabolite methamidophos. More significantly, the Pseudomonas pseudoalcaligenes strain PS-5 could be useful as potential biological agents in effective bioremediation campaign for multi-polluted environments.
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Affiliation(s)
- Simranjeet Singh
- Department of Biotechnology, Lovely Professional University, Phagwara, Punjab 144002 India
| | - Vijay Kumar
- Regional Pesticides Testing Laboratory, Chandigarh, 160030 India
- Regional Ayurveda Research Institute for Drug Development, Gwalior, Madhya Pradesh 474009 India
| | - Niraj Upadhyay
- Department of Chemistry, Dr. Hari Singh Gour University, Sagar, Madhya Pradesh 462007 India
| | - Joginder Singh
- Department of Biotechnology, Lovely Professional University, Phagwara, Punjab 144002 India
| | - Sourav Singla
- Department of Biotechnology, Lovely Professional University, Phagwara, Punjab 144002 India
| | - Shivika Datta
- Department of Biotechnology, Lovely Professional University, Phagwara, Punjab 144002 India
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Gros P, Ahmed A, Kühn O, Leinweber P. Glyphosate binding in soil as revealed by sorption experiments and quantum-chemical modeling. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 586:527-535. [PMID: 28236479 DOI: 10.1016/j.scitotenv.2017.02.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 02/01/2017] [Accepted: 02/01/2017] [Indexed: 06/06/2023]
Abstract
The herbicide glyphosate (GLP) is supposed to be rapidly degraded or adsorbed strongly by soil solids but findings in soil years after application and concentrations in waters above legal limits question a harmless disappearance. Therefore, we conducted batch sorption experiments with 23 thoroughly characterized arable surface soils, correlated isotherm coefficients with numerous inorganic and organic soil parameters, and investigated GLP-SOM-complexes by quantum-chemical modeling. The Freundlich sorption model yielded the best fits, and coefficients Kf and nf were correlated positively with the contents of clay/silt. The contents of organic C (Corg) and of the mass-spectrometrically determined SOM-compound classes carbohydrates, phenols/lignin monomers, lignin dimers, lipids, alkylaromatics, non-amide N and amides and sterols all were strongly positively correlated with the Freundlich coefficients. Quantum-chemical modeling showed that both GLP phosphonic and carboxylic functional groups interact similarly with the polar SOM functional groups via H-bond formation but the GLP phosphonic moiety is most important in the GLP-SOM-interaction. Moreover, the interaction mechanism between GLP and every modeled SOM-compound class was explored indicating the importance of the polarity, electron density, and site of attack of the SOM fragments in the GLP-SOM-interaction. Partial binding energies were combined to a total binding energy (EB,tot) of GLP to the SOM, considering the mass spectrometrically quantified compound classes for each individual soil sample. The resulting strongly positive correlation between the EB,tot and the Corg provided compelling new experimental-theoretical evidence for the importance of SOM on the GLP binding and its behavior in the environment. In conclusion, the multitude of binding mechanisms to clay minerals and organic colloids make the occurrence of free GLP rather unlikely but a leaching of GLP complexes via preferential flow path through soil and transfer to waterways rather likely.
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Affiliation(s)
- Peter Gros
- University of Rostock, Soil Science, Justus-von-Liebig-Weg 6, D-18059 Rostock, Germany.
| | - Ashour Ahmed
- University of Rostock, Institute of Physics, Albert-Einstein-Str. 23-24, D-18051 Rostock, Germany; University of Cairo, Faculty of Science, Department of Chemistry, 12613 Giza, Egypt.
| | - Oliver Kühn
- University of Rostock, Institute of Physics, Albert-Einstein-Str. 23-24, D-18051 Rostock, Germany.
| | - Peter Leinweber
- University of Rostock, Soil Science, Justus-von-Liebig-Weg 6, D-18059 Rostock, Germany.
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Bech TB, Rosenbom AE, Sørensen SR, Jacobsen CS. Conservative tracer bromide inhibits pesticide mineralisation in soil. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 222:404-411. [PMID: 28065570 DOI: 10.1016/j.envpol.2016.12.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 12/09/2016] [Accepted: 12/11/2016] [Indexed: 06/06/2023]
Abstract
Bromide is a conservative tracer that is often applied with non-conservative solutes such as pesticides to estimate their retardation in the soil. It has been applied in concentrations of up to 250 g Br L-1, levels at which the growth of single-celled organisms can be inhibited. Bromide applications may therefore affect the biodegradation of non-conservative solutes in soil. The present study investigated the effect of potassium bromide (KBr) on the mineralisation of three pesticides - glyphosate, MCPA and metribuzin - in four agricultural A-horizon soils. KBr was added to soil microcosms at concentrations of 0, 0.5, 2.5 and 5 g Br- L-1 in the soil solution. The study concluded that KBr had a negative effect on pesticide mineralisation. The inhibitory effect varied depending on the KBr concentration, the type of pesticide and the type of soil. Furthermore, 16 S amplicon sequencing revealed that the KBr treatment generally reduced the abundance of bacteroidetes and proteobacteria on both an RNA and DNA level. Therefore, in order to reduce the effect of KBr on the soil bacterial community and consequently also on xenobiotic degradation, it is recommended that KBr be applied in a concentration that does not exceed 0.5 g Br- L-1 in the soil water.
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Affiliation(s)
- Tina B Bech
- Geological Survey of Denmark and Greenland, Department of Geochemistry, Copenhagen, Denmark.
| | - Annette E Rosenbom
- Geological Survey of Denmark and Greenland, Department of Geochemistry, Copenhagen, Denmark
| | | | - Carsten S Jacobsen
- Aarhus University, Department of Environmental Science, Roskilde, Denmark
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Xu J, Gu X, Guo Y, Tong F, Chen L. Adsorption behavior and mechanism of glufosinate onto goethite. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 560-561:123-130. [PMID: 27096492 DOI: 10.1016/j.scitotenv.2016.03.239] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 03/29/2016] [Accepted: 03/30/2016] [Indexed: 06/05/2023]
Abstract
The adsorption of glufosinate (GLU), a widely used herbicide similar to glyphosate (GLY), onto goethite was investigated as a function of the pH, ionic strength, background cations and anions, heavy metal ions and fulvic acids (FAs) by using batch adsorption experiments. In situ ATR-FTIR spectroscopy and density functional theory (DFT) calculations were carried out to characterize the molecular interactions between GLU and goethite surfaces. The macroscopic results indicated that an increasing pH exerted an adverse effect on GLU adsorption because of the electrostatic repulsion, and the adsorption was not sensitive to ionic strengths or background cation types, indicating that an inner-sphere surface complex was involved. GLU adsorption can be considerably depressed by PO4(3-), SO4(2-), and a high level of FA because of the competitive effect, while being enhanced by Cu(2+) with a maximum adsorption at approximately pH5 because of the metal ion bridging effect. Other examined divalent metal cations (Cd(2+), Zn(2+), and Pb(2+)) showed almost no effect on GLU adsorption, indicating weak interaction between them. ATR-FTIR spectra and the DFT calculations further proved that GLU was bonded to goethite surfaces through the formation of a monodentate mononuclear inner-sphere complex between the phosphinic moiety and surface Fe(III) centers under an acidic condition. The results showed that GLU had a similar adsorption mechanism to that of GLY onto goethite, but with a lower adsorption affinity, possibly exerting higher mobility and risk in soils.
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Affiliation(s)
- Jian Xu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163, Xianlin Ave., Nanjing, 210023, PR China; Department of Environmental Science and Engineering, Nanjing University Jinling College, 8, Xuefu Road, Nanjing, 210089, PR China.
| | - Xueyuan Gu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163, Xianlin Ave., Nanjing, 210023, PR China.
| | - Yong Guo
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, 1, Xikang Road, Nanjing, 210098, PR China.
| | - Fei Tong
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163, Xianlin Ave., Nanjing, 210023, PR China.
| | - Liangyan Chen
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163, Xianlin Ave., Nanjing, 210023, PR China.
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Sidoli P, Baran N, Angulo-Jaramillo R. Glyphosate and AMPA adsorption in soils: laboratory experiments and pedotransfer rules. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:5733-42. [PMID: 26581693 DOI: 10.1007/s11356-015-5796-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 11/10/2015] [Indexed: 06/05/2023]
Abstract
Adsorption of the herbicide glyphosate and its main metabolite AMPA (aminomethylphosphonic acid) was investigated on 17 different agricultural soils. Batch equilibration adsorption data are shown by Freundlich adsorption isotherms. Glyphosate adsorption is clearly affected by equilibration concentrations, but the nonlinear AMPA adsorption isotherms indicate saturation of the adsorption sites with increasing equilibrium concentrations. pHCaCl2 (i.e. experimental pH) is the major parameter governing glyphosate and AMPA adsorption in soils. However, considering pHCaCl2 values, available phosphate amount, and amorphous iron and aluminium oxide contents by using a nonlinear multiple regression equation, obtains the most accurate and powerful pedotransfer rule for predicting the adsorption constants for these two molecules. As amorphous iron and aluminium oxide contents in soil are not systematically determined, we also propose a pedotransfer rule with two variables-pHCaCl2 values and available phosphate amount-that remains acceptable for both molecules. Moreover, the use of the commonly measured pHwater or pHKCl values gives less accurate results compared to pHCaCl2 measurements. To our knowledge, this study is the first AMPA adsorption characterization for a significant number of temperate climate soils.
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Affiliation(s)
- Pauline Sidoli
- Bureau de Recherches Géologiques et Minières, BRGM, 3 Avenue Claude Guillemin, BP 36009, 45060, Orléans Cedex 2, France
- Université de Lyon, UMR5023 Laboratoire Ecologie des Hydrosystèmes Naturels et Anthropisés, CNRS, ENTPE, Université Lyon 1, 3, rue Maurice, 69518, Vaulx-en-Velin, France
| | - Nicole Baran
- Bureau de Recherches Géologiques et Minières, BRGM, 3 Avenue Claude Guillemin, BP 36009, 45060, Orléans Cedex 2, France.
| | - Rafael Angulo-Jaramillo
- Université de Lyon, UMR5023 Laboratoire Ecologie des Hydrosystèmes Naturels et Anthropisés, CNRS, ENTPE, Université Lyon 1, 3, rue Maurice, 69518, Vaulx-en-Velin, France
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Lupi L, Miglioranza KSB, Aparicio VC, Marino D, Bedmar F, Wunderlin DA. Occurrence of glyphosate and AMPA in an agricultural watershed from the southeastern region of Argentina. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 536:687-694. [PMID: 26254069 DOI: 10.1016/j.scitotenv.2015.07.090] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 07/19/2015] [Accepted: 07/19/2015] [Indexed: 06/04/2023]
Abstract
Glyphosate (GLY) and AMPA concentrations were determined in sandy soil profiles, during pre- and post-application events in two agricultural soybean fields (S1 and S2). Streamwater and sediment samples were also analyzed. Post-application sampling was carried out one month later from the event. Concentrations of GLY+AMPA in surface soils (0-5 cm depth) during pre-application period showed values 20-fold higher (0.093-0.163 μg/g d.w.) than control area (0.005 μg/g d.w.). After application event soils showed markedly higher pesticide concentrations. A predominance of AMPA (80%) was observed in S1 (early application), while 34% in S2 for surface soils. GLY+AMPA concentrations decreased with depth and correlated strongly with organic carbon (r between 0.74 and 0.88, p<0.05) and pH (r between -0.81 and -0.76, p<0.001). The slight enrichment of pesticides observed from 25 cm depth to deeper layer, in addition to the alkaline pH along the profile, is of high concern about groundwater contamination. Sediments from pre-application period showed relatively lower pesticide levels (0.0053-0.0263 μg/g d.w.) than surface soil with a predominance of glyphosate, indicating a limited degradation. Levels of contaminants (mainly AMPA) in streamwater (ND-0.5 ng/mL) denote the low persistence of these compounds. However, a direct relationship in AMPA concentration was observed between sediment and streamwater. Despite the known relatively short half-life of glyphosate in soils, GLY+AMPA occurrence is registered in almost all matrices at different sampling times (pre- and post-application events). The physicochemical characteristics (organic carbon, texture, pH) and structure of soils and sediment in addition to the time elapsed from application determined the behavior of these contaminants in the environment. As a whole, the results warn us about vertical transport trough soil profile with the possibility of reaching groundwater.
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Affiliation(s)
- Leonardo Lupi
- Laboratorio de Ecotoxicología y Contaminación Ambiental, Instituto de, Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y, Naturales, Universidad Nacional de Mar del Plata (UNMdP), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), D. Funes 3350, Mar del Plata 7600, Argentina
| | - Karina S B Miglioranza
- Laboratorio de Ecotoxicología y Contaminación Ambiental, Instituto de, Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y, Naturales, Universidad Nacional de Mar del Plata (UNMdP), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), D. Funes 3350, Mar del Plata 7600, Argentina.
| | - Virginia C Aparicio
- Instituto Nacional de Tecnología Agropecuaria INTA EEA Balcarce, Ruta Nacional 226, Km 73,5, Balcarce CP 7620, Buenos Aires, Argentina
| | | | - Francisco Bedmar
- Instituto Nacional de Tecnología Agropecuaria INTA EEA Balcarce, Ruta Nacional 226, Km 73,5, Balcarce CP 7620, Buenos Aires, Argentina
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Hagner M, Hallman S, Jauhiainen L, Kemppainen R, Rämö S, Tiilikkala K, Setälä H. Birch (Betula spp.) wood biochar is a potential soil amendment to reduce glyphosate leaching in agricultural soils. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2015; 164:46-52. [PMID: 26342266 DOI: 10.1016/j.jenvman.2015.08.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 08/24/2015] [Accepted: 08/25/2015] [Indexed: 06/05/2023]
Abstract
Glyphosate (N-(phosphonomethyl) glycine), a commonly used herbicide in agriculture can leach to deeper soil layers and settle in surface- and ground waters. To mitigate the leaching of pesticides and nutrients, biochar has been suggested as a potential soil amendment due to its ability to sorb both organic and inorganic substances. However, the efficiency of biochar in retaining agro-chemicals in the soil is likely to vary with feedstock material and pyrolysis conditions. A greenhouse pot experiment, mimicking a crop rotation cycle of three plant genera, was established to study the effects of pyrolysis temperature on the ability of birch (Betula sp.) wood originated biochar to reduce the leaching of (i) glyphosate, (ii) its primary degradation product AMPA and (iii) phosphorus from the soil. The biochar types used were produced at three different temperatures: 300 °C (BC300), 375 °C (BC375) and 475 °C (BC475). Compared to the control treatment without biochar, the leaching of glyphosate was reduced by 81%, 74% and 58% in BC300, BC375 and BC475 treated soils, respectively. The respective values for AMPA were 46%, 39% and 23%. Biochar had no significant effect on the retention of water-soluble phosphorus in the soil. Our results corroborate earlier findings on pesticides, suggesting that biochar amendment to the soil is a promising way to reduce also the leaching of glyphosate. Importantly, the ability of biochar to adsorb agro-chemicals depends on the temperature at which feedstock is pyrolysed.
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Affiliation(s)
- Marleena Hagner
- University of Helsinki, Department of Environmental Sciences, Niemenkatu 73, 15340 Lahti, Finland.
| | - Sanna Hallman
- University of Jyväskylä, Department of Biological and Environmental Science, PO Box 35, 40014 Jyväskylä, Finland
| | | | | | - Sari Rämö
- Natural Resources Institute (Luke), 31600 Jokioinen, Finland
| | - Kari Tiilikkala
- Natural Resources Institute (Luke), 31600 Jokioinen, Finland
| | - Heikki Setälä
- University of Helsinki, Department of Environmental Sciences, Niemenkatu 73, 15340 Lahti, Finland
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Yang X, Wang F, Bento CPM, Meng L, van Dam R, Mol H, Liu G, Ritsema CJ, Geissen V. Decay characteristics and erosion-related transport of glyphosate in Chinese loess soil under field conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 530-531:87-95. [PMID: 26026412 DOI: 10.1016/j.scitotenv.2015.05.082] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 05/18/2015] [Accepted: 05/19/2015] [Indexed: 06/04/2023]
Abstract
UNLABELLED The decay characteristics and erosion-related transport of glyphosate and aminomethylphosphonic acid (AMPA) were monitored for 35 d at different slope gradients and rates of application in plots with loess soil on the Loess Plateau, China. The initial glyphosate decayed rapidly (half-life of 3.5d) in the upper 2 cm of soil following a first-order rate of decay. AMPA content in the 0-2 cm soil layer correspondingly peaked 3d after glyphosate application and then gradually decreased. The residues of glyphosate and AMPA decreased significantly with soil depth (p<0.05) independently of the slope inclination and application rate. About 0.36% of the glyphosate initially applied was transported from plots after one erosive rain 2d after the application. Glyphosate and AMPA concentrations in runoff were low while the contents in the sediment were much higher than in the upper 2 cm of the soil. CAPSULE Although the rate of glyphosate decay is rapid in Chinese loess soil, the risks of glyphosate and AMPA need to be taken into account especially in the area with highly erosive rainfall.
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Affiliation(s)
- Xiaomei Yang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, 712100 Yangling, China; Soil Physics and Land Management, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Fei Wang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, 712100 Yangling, China; Institute of Soil and Water Conservation, Northwest A&F University, 712100 Yangling, China.
| | - Célia P M Bento
- Soil Physics and Land Management, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands
| | - Lei Meng
- College of Geography and Environment, Baoji University of Arts and Sciences, 712300 Baoji, Shaanxi, China
| | - Ruud van Dam
- Institute of Food Safety (RIKILT), Wageningen University, P.O. Box 230, 6700 AE Wageningen, The Netherlands
| | - Hans Mol
- Institute of Food Safety (RIKILT), Wageningen University, P.O. Box 230, 6700 AE Wageningen, The Netherlands
| | - Guobin Liu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, 712100 Yangling, China; Institute of Soil and Water Conservation, Northwest A&F University, 712100 Yangling, China
| | - Coen J Ritsema
- Soil Physics and Land Management, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands
| | - Violette Geissen
- Soil Physics and Land Management, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands; Institute of Crop Science and Resources Conservation (INRES), University of Bonn, 53115 Bonn, Germany
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Statement on the FERA guidance proposal: ‘Guidance on how aged sorption studies for pesticides should be conducted, analysed and used in regulatory assessments’ (FERA, 2012). EFSA J 2015. [DOI: 10.2903/j.efsa.2015.4175] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Báez ME, Espinoza J, Silva R, Fuentes E. Sorption-desorption behavior of pesticides and their degradation products in volcanic and nonvolcanic soils: interpretation of interactions through two-way principal component analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:8576-85. [PMID: 25561264 DOI: 10.1007/s11356-014-4036-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Accepted: 12/22/2014] [Indexed: 06/04/2023]
Abstract
Sorption-desorption behavior of six pesticides and some degradation products was assessed on seven agricultural volcanic and nonvolcanic soils belonging to Andisol, Ultisol, Mollisol, and Alfisol orders. The global interpretation of sorption data was performed by principal component analysis. Results showed exceptionally high sorption of glyphosate and aminomethylphosphonic acid (AMPA) (the breakdown product) on volcanic soils (K f > 1500 μg(1 - 1 / n) mL(1 / n) g(-1)) related mainly to contents of amorphous aluminum oxides (Andisols) and crystalline minerals (Ultisols). The lower sorption on nonvolcanic soils was associated to low organic matter contents and lack of significant minerals. Metsulfuron-methyl and 3,5,6-trichloro-2-pyridinol (metabolite of chlorpyrifos) were weakly to substantially sorbed on Andisols and Ultisols, but the first one was not sorbed at pH > 6.4, including nonvolcanic soils. The metabolite of diazinon, 2-isopropyl-4-methyl-6-hydroxypyrimidine, was weakly sorbed on all soils (K f = 0.4 to 3.6 μg(1 - 1 / n) mL(1 / n) g(-1)). Acidic compounds would be lixiviated in Mollisols and Alfisols, but they could leach also in Andisols and Ultisols if they reach greater depths. Atrazine and deethylatrazine sorption was related to organic carbon content; therefore, they were weakly retained on nonvolcanic soils (K f = 0.7 to 2.2 μg(1 - 1 / n) mL(1 / n) g(-1)). Chlorpyrifos was highly sorbed on all soils reaching K OC values of >8000. Finally, the significant retention of chlorothalonil and diazinon on Mollisols and Alfisols in spite of their low OC contents showed the contribution of clay minerals in the sorption process.
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Affiliation(s)
- María E Báez
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Sergio Livingstone Pohlhammer 1007, 8380000, Santiago, Chile,
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Zhang C, Hu X, Luo J, Wu Z, Wang L, Li B, Wang Y, Sun G. Degradation dynamics of glyphosate in different types of citrus orchard soils in China. Molecules 2015; 20:1161-75. [PMID: 25587790 PMCID: PMC6272633 DOI: 10.3390/molecules20011161] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 01/06/2015] [Indexed: 12/02/2022] Open
Abstract
Glyphosate formulations that are used as a broad-spectrum systemic herbicide have been widely applied in agriculture, causing increasing concerns about residues in soils. In this study, the degradation dynamics of glyphosate in different types of citrus orchard soils in China were evaluated under field conditions. Glyphosate soluble powder and aqueous solution were applied at 3000 and 5040 g active ingredient/hm2, respectively, in citrus orchard soils, and periodically drawn soil samples were analyzed by high performance liquid chromatography. The results showed that the amount of glyphosate and its degradation product aminomethylphosphonic acid (AMPA) in soils was reduced with the increase of time after application of glyphosate formulations. Indeed, the amount of glyphosate in red soil from Hunan and Zhejiang Province, and clay soil from Guangxi Province varied from 0.13 to 0.91 µg/g at 42 days after application of aqueous solution. Furthermore, the amount of glyphosate in medium loam from Zhejiang and Guangdong Province, and brown loam from Guizhou Province varied from less than 0.10 to 0.14 µg/g, while the amount of AMPA varied from less than 0.10 to 0.99 µg/g at 42 days after application of soluble powder. Overall, these findings demonstrated that the degradation dynamics of glyphosate aqueous solution and soluble powder as well as AMPA depend on the physicochemical properties of the applied soils, in particular soil pH, which should be carefully considered in the application of glyphosate herbicide.
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Affiliation(s)
- Changpeng Zhang
- MOA Key Lab for Pesticide Residue Detection, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
| | - Xiuqing Hu
- MOA Key Lab for Pesticide Residue Detection, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
| | - Jinyan Luo
- Shanghai Extension and Service Center of Agriculture Technical, Shanghai 201103, China.
| | - Zhiyi Wu
- Zhejiang Entry-Exit Inspection and Quarantine Bureau, Hangzhou 310012, China.
| | - Li Wang
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China.
| | - Bin Li
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China.
| | - Yanli Wang
- State Key Laboratory Breeding Base for Zhejiang Sustainable Plant Pest and Disease Control, Key Laboratory of Detection for Pesticide Residues, Ministry of Agriculture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
| | - Guochang Sun
- State Key Laboratory Breeding Base for Zhejiang Sustainable Plant Pest and Disease Control, Key Laboratory of Detection for Pesticide Residues, Ministry of Agriculture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
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Cassigneul A, Alletto L, Benoit P, Bergheaud V, Etiévant V, Dumény V, Le Gac AL, Chuette D, Rumpel C, Justes E. Nature and decomposition degree of cover crops influence pesticide sorption: quantification and modelling. CHEMOSPHERE 2015; 119:1007-1014. [PMID: 25303661 DOI: 10.1016/j.chemosphere.2014.08.082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Revised: 08/15/2014] [Accepted: 08/31/2014] [Indexed: 06/04/2023]
Abstract
This study quantifies and models the influence of the type and the degree of decomposition of cover crops (CC) on three pesticides sorption: epoxiconazole (EPX), S-metolachlor (SMOC) and glyphosate (GLY). Residues of four cover crop species were incubated for 0, 6, 28 or 56 d in controlled conditions. For each incubation time, adsorption of pesticides on CC residues was measured in batch experiments. Additionally, the biochemical and elemental composition (Van Soest fractionation, C:N, (13)C NMR spectroscopy) of CC was characterized. Mineralization of CC residues was monitored at all incubation times using CO2 trapping. Results showed that the adsorption of pesticides differed significantly according to (i) the type of molecule, (ii) the type of CC, (iii) the degree of CC decomposition and the interaction CC×decomposition time. EPX and GLY were the most (Kd ranging from 188 to 267 L kg(-1)) and the least (Kd ranging from 18 to 28 L kg(-1)) sorbed pesticides respectively. With increasing decomposition of the CC residue, sorption increased by 1.6- to 4.7-fold according to the type of pesticide and cover crop. It was significantly correlated with the net cumulative mineralization (ρ>0.7) and other indicators of biochemical composition such as C:N ratio (ρ<-0.7), the Van Soest neutral detergent soluble fraction (ρ>0.5) and the alkyl/O-alkyl C ratio determined by NMR. An innovative model based on net cumulative mineralization of CC residues is proposed to describe the pesticide sorption and appears to be a promising approach to account for the effects of decaying plant residues on the environmental fate of pesticides.
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Affiliation(s)
- A Cassigneul
- Université de Toulouse - École d'ingénieurs de Purpan, UMR 1248 AGIR - 75, voie du TOEC BP 57 611, 31 076 Toulouse cedex 3, France; INRA, Institut National de la Recherche Agronomique, UMR 1091 EGC, 78 850 Thiverval-Grignon, France
| | - L Alletto
- Université de Toulouse - École d'ingénieurs de Purpan, UMR 1248 AGIR - 75, voie du TOEC BP 57 611, 31 076 Toulouse cedex 3, France.
| | - P Benoit
- INRA, Institut National de la Recherche Agronomique, UMR 1091 EGC, 78 850 Thiverval-Grignon, France
| | - V Bergheaud
- INRA, Institut National de la Recherche Agronomique, UMR 1091 EGC, 78 850 Thiverval-Grignon, France
| | - V Etiévant
- INRA, Institut National de la Recherche Agronomique, UMR 1091 EGC, 78 850 Thiverval-Grignon, France
| | - V Dumény
- INRA, Institut National de la Recherche Agronomique, UMR 1091 EGC, 78 850 Thiverval-Grignon, France
| | - A L Le Gac
- Université de Toulouse - École d'ingénieurs de Purpan, UMR 1248 AGIR - 75, voie du TOEC BP 57 611, 31 076 Toulouse cedex 3, France; INRA, Institut National de la Recherche Agronomique, UMR 1091 EGC, 78 850 Thiverval-Grignon, France
| | - D Chuette
- Université de Toulouse - École d'ingénieurs de Purpan, UMR 1248 AGIR - 75, voie du TOEC BP 57 611, 31 076 Toulouse cedex 3, France; INRA, Institut National de la Recherche Agronomique, UMR 1091 EGC, 78 850 Thiverval-Grignon, France
| | - C Rumpel
- CNRS, Biogéochimie et Écologie des Milieux Continentaux, BioEMCO, (UMR 7618 UPMC, UPEC, CNRS, INRA, AgroParisTech, IRD), F-78850 Thiverval Grignon, France
| | - E Justes
- INRA, Institut National de la Recherche Agronomique, UMR 1248 AGIR, Auzeville - BP 52627, 31326 Castanet-Tolosan cedex, France
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Báez ME, Fuentes E, Espina MJ, Espinoza J. Determination of glyphosate and aminomethylphosphonic acid in aqueous soil matrices: a critical analysis of the 9-fluorenylmethyl chloroformate derivatization reaction and application to adsorption studies. J Sep Sci 2014; 37:3125-32. [PMID: 25137606 DOI: 10.1002/jssc.201400653] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 08/02/2014] [Accepted: 08/05/2014] [Indexed: 11/08/2022]
Abstract
The assessment of the environmental fate of glyphosate and its degradation product (aminomethylphosphonic acid) is of great interest given the widespread use of the herbicide. Studies of adsorption-desorption and transport processes in soils require analytical methods with sensitivity, accuracy, and precision suitable for determining the analytes in aqueous equilibrium solutions of varied complexity. In this work, the effect of factors on the yield of the derivatization of both compounds with 9-fluorenylmethyl chloroformate for applying in aqueous solutions derived from soils was evaluated through factorial experimental designs. Interference effects coming from background electrolytes and soil matrices were established. The whole method had a linear response up to 640 ng/mL (R(2) > 0.999) under optimized conditions for high-performance liquid chromatography with fluorescence detection. Limits of detection were 0.6 and 0.4 ng/mL for glyphosate and aminomethylphosphonic acid, respectively. The relative standard deviation was 4.4% for glyphosate (20 ng/mL) and 5.9% for aminomethylphosphonic acid (10 ng/mL). Adsorption of compounds on four different soils was assessed. Isotherm data fitted well the Freundlich model (R(2) > 0.97). Kf constants varied between 93 ± 3.1 and 2045 ± 157 for glyphosate and between 99 ± 4.1 and 1517 ± 56 (μg(1-1/) (n) mL(1/) (n) ( ) g(-1) ) for aminomethylphosphonic acid, showing the broad range of applicability of the proposed method.
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46
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Shehata AA, Kühnert M, Haufe S, Krüger M. Neutralization of the antimicrobial effect of glyphosate by humic acid in vitro. CHEMOSPHERE 2014; 104:258-61. [PMID: 24268342 DOI: 10.1016/j.chemosphere.2013.10.064] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 09/26/2013] [Accepted: 10/16/2013] [Indexed: 06/02/2023]
Abstract
In the present study, the neutralization ability of the antimicrobial effect of glyphosate by different humic acids was investigated. The minimal inhibitory concentrations of glyphosate for different bacteria such as Bacillus badius, Bifidobacterium adolescentis, Escherichia coli, E. coli 1917 strain Nissle, Enterococcus faecalis, Enterococcus faecium, Salmonella enteritidis and Salmonella typhimurium were determined in the presence or absence of different concentrations of humic acid (0.25, 0.5 and 1.0 mg mL(-1)). Our findings indicated that humic acids inhibited the antimicrobial effect of glyphosate on different bacteria. This information can help overcome the negative impact of glyphosate residues in feed and water.
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Affiliation(s)
- Awad A Shehata
- Institute of Bacteriology and Mycology, Faculty of Veterinary Medicine, Leipzig University, An den Tierkliniken 29, 04103 Leipzig, Germany; Albrecht Daniel Thaer-Institute of Agronomy at the University Leipzig, Gustav-Kuhn Straße 8, 04159 Leipzig, Germany; Avian and Rabbit Diseases Department, Faculty of Veterinary Medicine, Sadat City University, Egypt.
| | - Manfred Kühnert
- WHPharmawerk Weinböhla GmbH, Poststr. 58, 01689 Weinböhla, Germany
| | - Svent Haufe
- WHPharmawerk Weinböhla GmbH, Poststr. 58, 01689 Weinböhla, Germany
| | - Monika Krüger
- Institute of Bacteriology and Mycology, Faculty of Veterinary Medicine, Leipzig University, An den Tierkliniken 29, 04103 Leipzig, Germany
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Islas G, Rodriguez JA, Mendoza-Huizar LH, Pérez-Moreno F, Carrillo EG. DETERMINATION OF GLYPHOSATE AND AMINOMETHYLPHOSPHONIC ACID IN SOILS BY HPLC WITH PRE-COLUMN DERIVATIZATION USING 1,2-NAPHTHOQUINONE-4-SULFONATE. J LIQ CHROMATOGR R T 2014. [DOI: 10.1080/10826076.2013.789801] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Gabriela Islas
- a Área Académica de Química , Universidad Autónoma del Estado de Hidalgo , Pachuca , Hgo , México
| | - José A. Rodriguez
- a Área Académica de Química , Universidad Autónoma del Estado de Hidalgo , Pachuca , Hgo , México
| | - Luis H. Mendoza-Huizar
- a Área Académica de Química , Universidad Autónoma del Estado de Hidalgo , Pachuca , Hgo , México
| | - Fidel Pérez-Moreno
- b Área Académica de Ciencias de la Tierra y Materiales , Universidad Autónoma del Estado de Hidalgo , Pachuca , Hgo , México
| | - E. Gabriela Carrillo
- c Facultad de Ciencias Químicas e Ingeniería , Universidad Autónoma de Baja California , Tijuana , B.C. , México
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Rampoldi EA, Hang S, Barriuso E. Carbon-14-glyphosate behavior in relationship to pedoclimatic conditions and crop sequence. JOURNAL OF ENVIRONMENTAL QUALITY 2014; 43:558-567. [PMID: 25602657 DOI: 10.2134/jeq2013.09.0362] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The recognition of glyphosate [(-phosphonomethyl) glycine] behavioral patterns can be readily examined using a pedoclimatic gradient. In the present study, glyphosate adsorption-desorption and degradation were examined under different scenarios in relationship to soil properties and soil use applications. Three sites with varied pedoclimatic conditions and two crop sequences were selected. Adsorption-desorption and glyphosate distribution in mineralized, extractable, and nonextractable fractions were assessed under laboratory conditions. Glyphosate sorption was characterized by isotherms and glyphosate degradation using the distribution of C-glyphosate radioactivity among mineralized fractions, two extractable fractions (in water, ER1; in NHOH, ER2), and nonextractable fractions. Results showed sorption indices (distribution coefficient and Freundlich sorption coefficient : 13.4 ± 0.3-64.1 ± 0.9 L kg and 16.2-60.6, respectively), and hysteresis increased among soil sites associated with decreasing soil particle size <2 μm, soil organic matter, and other soil properties associated with soil granulometry. A multiple stepwise regression analysis was applied to estimate the relationship between values and soil properties. Cation exchange capacity, water field capacity, and Bray-1 P were the soil properties retained in the equation. Soils under continuous soybean [ (L.) Merr.] (monoculture) treatment exhibited reduced glyphosate adsorption and decreased hysteresis desorption relative to soils under rotation. To our knowledge, these results are the first to demonstrate that soils with identical properties exhibited different glyphosate retention capacities based on crop sequence. We propose possible explanations for this observation. Our results suggested that characterization of the variability in soil property gradients can serve to determine glyphosate behavioral patterns, which can establish a criterion for use in reducing potential environmental risks.
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49
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Distribution of Glyphosate in Chicken Organs and its Reduction by Humic Acid Supplementation. J Poult Sci 2014. [DOI: 10.2141/jpsa.0130169] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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50
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Botero-Coy AM, Ibáñez M, Sancho JV, Hernández F. Improvements in the analytical methodology for the residue determination of the herbicide glyphosate in soils by liquid chromatography coupled to mass spectrometry. J Chromatogr A 2013; 1292:132-41. [PMID: 23332301 DOI: 10.1016/j.chroma.2012.12.007] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Revised: 10/24/2012] [Accepted: 12/06/2012] [Indexed: 11/26/2022]
Abstract
The determination of glyphosate (GLY) in soils is of great interest due to the widespread use of this herbicide and the need of assessing its impact on the soil/water environment. However, its residue determination is very problematic especially in soils with high organic matter content, where strong interferences are normally observed, and because of the particular physico-chemical characteristics of this polar/ionic herbicide. In the present work, we have improved previous LC-MS/MS analytical methodology reported for GLY and its main metabolite AMPA in order to be applied to "difficult" soils, like those commonly found in South-America, where this herbicide is extensively used in large areas devoted to soya or maize, among other crops. The method is based on derivatization with FMOC followed by LC-MS/MS analysis, using triple quadrupole. After extraction with potassium hydroxide, a combination of extract dilution, adjustment to appropriate pH, and solid phase extraction (SPE) clean-up was applied to minimize the strong interferences observed. Despite the clean-up performed, the use of isotope labelled glyphosate as internal standard (ILIS) was necessary for the correction of matrix effects and to compensate for any error occurring during sample processing. The analytical methodology was satisfactorily validated in four soils from Colombia and Argentina fortified at 0.5 and 5mg/kg. In contrast to most LC-MS/MS methods, where the acquisition of two transitions is recommended, monitoring all available transitions was required for confirmation of positive samples, as some of them were interfered by unknown soil components. This was observed not only for GLY and AMPA but also for the ILIS. Analysis by QTOF MS was useful to confirm the presence of interferent compounds that shared the same nominal mass of analytes as well as some of their main product ions. Therefore, the selection of specific transitions was crucial to avoid interferences. The methodology developed was applied to the analysis of 26 soils from different areas of Colombia and Argentina, and the method robustness was demonstrated by analysis of quality control samples along 4 months.
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Affiliation(s)
- A M Botero-Coy
- Research Institute for Pesticides and Water, University Jaume I, Castellon 12071, Spain
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