1
|
Tian T, Song D, Zhang L, Huang H, Li Y. Facile and selective recognition of sulfonylurea pesticides based on the multienzyme-like activities enhancement of nanozymes combining sensor array. JOURNAL OF HAZARDOUS MATERIALS 2024; 469:133847. [PMID: 38422731 DOI: 10.1016/j.jhazmat.2024.133847] [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: 11/21/2023] [Revised: 02/16/2024] [Accepted: 02/19/2024] [Indexed: 03/02/2024]
Abstract
Traditional identification methods based on cholinesterase inhibition are limited to recognizing organic phosphorus and carbamate esters, and their response to sulfonylurea pesticides is weak. Residual sulfonylurea pesticides can pose a threat to human health. So, it is very important to develop an effective, rapid and portable method for sulfonylurea pesticides detection. Herein, we first found that sulfonylurea pesticides have activity-enhancing effects on copper-based nanozymes, and then combined them with the array technology to construct a six-channel sensing array method for selectively identifying sulfonylurea pesticides and detecting total concentration of sulfonylurea pesticides (the limit of detection was 0.03 µg/mL). This method has good selectivity towards sulfonylurea pesticides. In addition, a smartphone-based colorimetric paper sensor analysis method was developed to achieve the on-site detection of the total concentration of sulfonylurea pesticides. And this array can also be used for individual differentiation (1-100 µg/mL). Our work not only investigates the specific responses of copper-based nanozymes to sulfonylurea pesticides, but also develops a simple method that contributes to directly detect sulfonylurea pesticides at the source of pollution, providing insights for further research on sulfonylurea pesticides detection and filling the gap in pesticide residue studies.
Collapse
Affiliation(s)
- Tian Tian
- College of Food Science and Engineering, Jilin University, Changchun 130025, PR China
| | - Donghui Song
- College of Food Science and Engineering, Jilin University, Changchun 130025, PR China
| | - Ling Zhang
- College of Food Science and Engineering, Jilin University, Changchun 130025, PR China
| | - Hui Huang
- College of Food Science and Engineering, Jilin University, Changchun 130025, PR China
| | - Yongxin Li
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, College of New Energy and Environment, Jilin University, Changchun 130021, PR China; Jilin Provincial Key Laboratory of Water Resources and Water Environment, College of New Energy and Environment, Jilin University, Changchun 130021, PR China.
| |
Collapse
|
2
|
Bol’shakova DS, Amelin VG. Determination of pesticides in environmental materials and food products by capillary electrophoresis. JOURNAL OF ANALYTICAL CHEMISTRY 2016. [DOI: 10.1134/s1061934816100026] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
3
|
Zhong M, Wang T, Hu J. Dissipation kinetics and residues of triazolopyrimidine herbicides flumetsulam and florasulam in corn ecosystem. ENVIRONMENTAL MONITORING AND ASSESSMENT 2015; 187:390. [PMID: 26026845 DOI: 10.1007/s10661-015-4593-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Accepted: 05/05/2015] [Indexed: 06/04/2023]
Abstract
The dynamic and residues of florasulam and flumetsulam in corn field ecosystem were investigated using quick, easy, cheap, effective, rugged, and safe (QuEChERS) procedure with high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). The limits of quantification (LOQs) of the proposed method ranged from 0.005 to 0.01 mg/kg. Mean recoveries and relative standard deviations (RSDs) of the two compounds in all samples at three spiking levels ranged 94-110 % and 2.0-9.2 %, respectively. Florasulam and flumetsulam degradation followed first-order kinetics with half-lives 1.7-2.9 and 3.3-8.7 days in soil and 1.3-1.8 and 0.9-1.7 days in plant, respectively. The residues in all the samples were found to be less than the LOQs at preharvest intervals of 53 and 78 days. The results suggest that the combined use of florasulam and flumetsulam on corn is considered to be safe under the recommended conditions and can be utilized for establishing the maximum residue limit (MRL) of florasulam in corn in China.
Collapse
Affiliation(s)
- Mengmeng Zhong
- Lab of Pesticide Residues and Environmental Toxicology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing, 100083, People's Republic of China
| | | | | |
Collapse
|
4
|
Zhao H, Xu J, Dong F, Liu X, Wu Y, Wu X, Zheng Y. Simultaneous determination of three herbicides in wheat, wheat straw, and soil using a quick, easy, cheap, effective, rugged, and safe method with ultra high performance liquid chromatography and tandem mass spectrometry. J Sep Sci 2015; 38:1164-71. [DOI: 10.1002/jssc.201401234] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Revised: 01/04/2015] [Accepted: 01/13/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Huanhuan Zhao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests; Institute of Plant Protection, Chinese Academy of Agricultural Sciences; Beijing China
- Henan Institute of Science and Technology; Xinxiang China
| | - Jun Xu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests; Institute of Plant Protection, Chinese Academy of Agricultural Sciences; Beijing China
| | - Fengshou Dong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests; Institute of Plant Protection, Chinese Academy of Agricultural Sciences; Beijing China
| | - Xingang Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests; Institute of Plant Protection, Chinese Academy of Agricultural Sciences; Beijing China
| | - Yanbing Wu
- Henan Institute of Science and Technology; Xinxiang China
| | - Xiaohu Wu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests; Institute of Plant Protection, Chinese Academy of Agricultural Sciences; Beijing China
| | - Yongquan Zheng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests; Institute of Plant Protection, Chinese Academy of Agricultural Sciences; Beijing China
| |
Collapse
|
5
|
Dong B, Qian W, Hu J. Dissipation kinetics and residues of florasulam and tribenuron-methyl in wheat ecosystem. CHEMOSPHERE 2015; 120:486-491. [PMID: 25268470 DOI: 10.1016/j.chemosphere.2014.09.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 09/02/2014] [Accepted: 09/07/2014] [Indexed: 06/03/2023]
Abstract
The dissipation kinetics and residual levels of florasulam and tribenuron-methyl in wheat field ecosystem were determined using a quick, easy, cheap, efficient, rugged and safe method (QuEChERS) with rapid resolution liquid chromatography tandem mass spectrometry (RRLC-MS/MS). The average recoveries of florasulam and tribenuron-methyl at three spiking levels in wheat plant, soil, wheat straw and wheat grain ranged from 72.8% to 99.2% with relative standard deviations (RSDs) were less than 10.1% and 82.5% to 103.8% with RSDs were less than 9.4%, respectively. The limits of quantification (LOQs) of florasulam and tribenuron-methyl for wheat plant, wheat straw, wheat grain and soil were 0.01, 0.01, 0.005, 0.005 mg kg(-1), respectively. The field trials results showed that the half-lives of florasulam were 2.76-10.83 d. Half-lives for tribenuron-methyl were found to be 1.27-5.37 d. The terminal residues in wheat grain were much lower than maximum residue limits (MRLs) set by China (0.01 mg kg(-1) for florasulam and 0.05 mg kg(-1) for tribenuron-methyl), which considered to be safe for human beings. These results will contribute to establishing the scientific basis of the dosage of florasulam and tribenuron-methyl for use in wheat field ecosystems.
Collapse
Affiliation(s)
- Bizhang Dong
- Lab of Pesticide Residues and Environmental Toxicology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Wei Qian
- Lab of Pesticide Residues and Environmental Toxicology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Jiye Hu
- Lab of Pesticide Residues and Environmental Toxicology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, PR China.
| |
Collapse
|
6
|
Kaur P, Kaur K, Bhullar MS. Quantification of penoxsulam in soil and rice samples by matrix solid phase extraction and liquid-liquid extraction followed by HPLC-UV method. ENVIRONMENTAL MONITORING AND ASSESSMENT 2014; 186:7555-7563. [PMID: 25092135 DOI: 10.1007/s10661-014-3947-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Accepted: 07/14/2014] [Indexed: 06/03/2023]
Abstract
The paper exploits the development of novel, simple and sensitive methodology involving matrix solid phase dispersion (MSPD) and the comparison of MSPD with liquid-liquid extraction (LLE) for the evaluation of residual penoxsulam in soil and rice samples. Extracted samples were analyzed by high-performance liquid chromatography (HPLC) with ultraviolet detector at 230 nm. Both methods were optimized, considering different parameters, and under optimum conditions, the mean recoveries obtained were in the range of 85-104 % for MSPD and 78.8-90.7 % for LLE. Precision values expressed as relative standard deviation (RSD) were ≤10 for MSPD and ≤15 for LLE. Linearity for penoxsulam was in the range of 0.01-20 μg mL(-1) with limits of detection and limits of quantification of 0.01 and 0.03 mg kg(-1), respectively.
Collapse
Affiliation(s)
- Pervinder Kaur
- Herbicide Residue Laboratory, Department of Agronomy, Punjab Agricultural University, Ludhiana, Punjab, India,
| | | | | |
Collapse
|
7
|
Analysis of the Staphylococcus aureus capsule biosynthesis pathway in vitro: Characterization of the UDP-GlcNAc C6 dehydratases CapD and CapE and identification of enzyme inhibitors. Int J Med Microbiol 2014; 304:958-69. [DOI: 10.1016/j.ijmm.2014.06.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Revised: 05/30/2014] [Accepted: 06/01/2014] [Indexed: 12/25/2022] Open
|
8
|
Rojano-Delgado AM, Luque de Castro MD. Capillary electrophoresis and herbicide analysis: Present and future perspectives. Electrophoresis 2014; 35:2509-19. [DOI: 10.1002/elps.201300556] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 04/16/2014] [Accepted: 04/23/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Antonia María Rojano-Delgado
- Department of Agricultural Chemistry and Soil Science; Córdoba Spain
- Campus of Rabanales, and Agroalimentary Excellence Campus; ceiA3, University of Córdoba; Córdoba Spain
| | - María D. Luque de Castro
- Department of Analytical Chemistry; Córdoba Spain
- Campus of Rabanales, and Agroalimentary Excellence Campus; ceiA3, University of Córdoba; Córdoba Spain
| |
Collapse
|
9
|
Fang R, Yi LX, Shao YX, Zhang L, Chen GH. ON-LINE PRECONCENTRATION IN CAPILLARY ELECTROPHORESIS FOR ANALYSIS OF AGROCHEMICAL RESIDUES. J LIQ CHROMATOGR R T 2014. [DOI: 10.1080/10826076.2013.794740] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Rou Fang
- a College of Food and Bioengineering , Jiangsu University , Zhenjiang , China
| | - Ling-Xiao Yi
- a College of Food and Bioengineering , Jiangsu University , Zhenjiang , China
| | - Yu-Xiu Shao
- a College of Food and Bioengineering , Jiangsu University , Zhenjiang , China
| | - Li Zhang
- a College of Food and Bioengineering , Jiangsu University , Zhenjiang , China
| | - Guan-Hua Chen
- a College of Food and Bioengineering , Jiangsu University , Zhenjiang , China
| |
Collapse
|
10
|
Wang Y, Wang F, Yu C, Li N, Zhang R, Ren R, Zhang H. Pneumatic nebulization gas–solid extraction of some pesticides in liquor. J Chromatogr A 2012; 1253:11-5. [DOI: 10.1016/j.chroma.2012.06.099] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 06/18/2012] [Accepted: 06/27/2012] [Indexed: 11/28/2022]
|
11
|
Li X, Wang L, Wang Z, Zhang H, Su R, Xu X, Zhang H. Ultrasonic nebulization extraction coupled with headspace hollow fiber microextraction of pesticides from root of Panax ginseng
C.A. Mey. J Sep Sci 2011; 34:1582-9. [DOI: 10.1002/jssc.201000858] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2010] [Revised: 03/13/2011] [Accepted: 04/09/2011] [Indexed: 11/09/2022]
|
12
|
Kaewchuay N, Yakushiji Y, Fukushi K, Saito K, Hirokawa T. A novel hybrid mode of sample injection to enhance CZE sensitivity for simultaneous determination of a pyridine-triphenylborane anti-fouling agent and its degradation products. Electrophoresis 2011; 32:1486-91. [DOI: 10.1002/elps.201100144] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2010] [Revised: 03/03/2011] [Accepted: 03/18/2011] [Indexed: 11/06/2022]
|
13
|
Rapid residue analysis of four triazolopyrimidine herbicides in soil, water, and wheat by ultra-performance liquid chromatography coupled to tandem mass spectrometry. Anal Bioanal Chem 2011; 399:2539-47. [DOI: 10.1007/s00216-010-4606-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2010] [Revised: 11/23/2010] [Accepted: 12/13/2010] [Indexed: 11/28/2022]
|
14
|
Medina RG, Malo DL, Calatayud JM. Automated Photo-Induced Fluorescence Determination of Flumetsulam. ANAL LETT 2009. [DOI: 10.1080/00032710902722103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
15
|
Merini LJ, Cuadrado V, Giulietti AM. Spiking solvent, humidity and their impact on 2,4-D and 2,4-DCP extractability from high humic matter content soils. CHEMOSPHERE 2008; 71:2168-2172. [PMID: 18275981 DOI: 10.1016/j.chemosphere.2007.12.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2007] [Revised: 12/21/2007] [Accepted: 12/29/2007] [Indexed: 05/25/2023]
Abstract
The 2,4-dichlorophenoxyacetic acid (2,4-D) is a hormone-like herbicide widely used in agriculture. Although its half life in soil is approximately two weeks, the thousands of tons introduced in the environment every year represent a risk for human health and the environment. Considering the toxic properties of this compound and its degradation products, it is important to assess and monitor the 2,4-D residues in agricultural soils. Furthermore, experiments of phyto/bioremediation are carried out to find economic and environmental friendly tools to restore the polluted soils. Accordingly, it is essential to accurately measure the amount of 2,4-D and its metabolites in soils. There is evidence that 2,4-D extraction from soil samples seriously depends on the physical and chemical properties of the soil, especially in those soils with high content of humic acids. The aim of this work was to assess the variables that influence the recovery and subsequent analysis of 2,4-D and its main metabolite (2,4-dichlorophenol) from those soils samples. The results showed that the recovery efficiency depends on the solvent and method used for the extraction, the amount and kind of solvent used for dissolving the herbicide and the soil water content at the moment of spiking. An optimized protocol for the extraction and quantification of 2,4-D and its main metabolite from soil samples is presented.
Collapse
Affiliation(s)
- Luciano Jose Merini
- Microbiología Industrial y Biotecnología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956 6a Piso (1113), Ciudad Autónoma de Buenos Aires, Argentina
| | | | | |
Collapse
|
16
|
Simpson SL, Quirino JP, Terabe S. On-line sample preconcentration in capillary electrophoresis. J Chromatogr A 2008; 1184:504-41. [DOI: 10.1016/j.chroma.2007.11.001] [Citation(s) in RCA: 269] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2007] [Revised: 10/30/2007] [Accepted: 11/01/2007] [Indexed: 02/06/2023]
|
17
|
Jabusch TW, Tjeerdema RS. Chemistry and fate of triazolopyrimidine sulfonamide herbicides. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2008; 193:31-52. [PMID: 20614343 DOI: 10.1007/978-0-387-73163-6_2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2007] [Accepted: 04/18/2007] [Indexed: 05/29/2023]
Abstract
The triazolopyrimidine sulfonamide (TSA) herbicides were registered in the United States in 1993. Their mode of action is by inhibition of acetolactate synthase (ALS), an enzyme common to plants and microorganisms but not found in animals. ALS inhibitors include other herbicide families such as the sulfonylureas, imidazolinones, and pyrimidinyl thiobenzoates. In the 1970s, sulfonylureas were the first ALS inhibitors to be introduced to the market. Their discovery was greeted as a great achievement because of their ability to suppress weeds at extremely low application rates compared to previously used herbicides and with low toxicity risk to humans and wildlife. By 1991, the market value of ALS inhibitors had reached $1.3 billion (U.S.). However, some of the problems associated with their use include the induction of resistance in weed species to both ALS-inhibiting and alternative herbicides. ALS inhibitors have also been found to damage nontarget plants at residual levels that are below the detection limits of standard analytical methods (Saari et al. 1994; Whitcomb 1999).
Collapse
Affiliation(s)
- Thomas W Jabusch
- San Francisco Estuary Institute, 7770 Pardee Lane, Oakland, CA, 94621, USA
| | | |
Collapse
|
18
|
Dabek-Zlotorzynska E, Celo V, Yassine MM. Recent advances in CE and CEC of pollutants. Electrophoresis 2008; 29:310-23. [DOI: 10.1002/elps.200700510] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
19
|
Xu H, Pan W, Song D, Yang G. Development of an improved liquid phase microextraction technique and its application in the analysis of flumetsulam and its two analogous herbicides in soil. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2007; 55:9351-9356. [PMID: 17953444 DOI: 10.1021/jf0718345] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
An improved liquid phase microextraction (LPME) technique has been developed. As part of this technique, analytes were extracted into an extractant microdrop which was laid on the cone-shaped bottom of a PCR tube (polychloroprene rubber tube) but not at the needle tip of a microsyringe, and the sample vial and PCR tube were horizontally placed so that the extractant was not affected by the force of vertical orientation (gravity and floating force). The stability of the extractant microdrop increased greatly, and the selection of extractant was extended. In this work, flumetsulam and its two analogous herbicides were chosen as model analytes in investigating the feasibility of the new pretreatment method by coupling it to high-performance liquid chromatography (HPLC). Under the optimized experimental conditions, the linear range and the limits of detection (S/N = 3) were 0.01-5 microg/mL (r = 0.9997) and 0.8 ng/mL for flumetsulam, 0.002-5 microg/mL (r = 0.9994) and 0.5 ng/mL for analogue 1, and 0.002-1 microg/mL (r = 0.9993) and 0.5 ng/mL for analog 2, respectively. The inter- and intraday reproducibilities (RSD) were below 5.3 and 4.5%, respectively. Good recoveries that ranged from 79.4 to 115.0% were obtained in the analysis of real soil samples. The extraction efficiency of the improved method was 4-8 times higher than that of the conventional liquid phase microextraction method. The novel, simple, rapid, sensitive technique is very suitable for extraction of apolar and medium polar analyte in complex environmental samples.
Collapse
Affiliation(s)
- Hui Xu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Center for Analysis and Testing, Central China Normal University, Wuhan 430079, People's Republic of China.
| | | | | | | |
Collapse
|
20
|
Ravelo-Pérez LM, Hernández-Borges J, Cifuentes A, Rodríguez-Delgado MA. MEKC combined with SPE and sample stacking for multiple analysis of pesticides in water samples at the ng/L level. Electrophoresis 2007; 28:1805-14. [PMID: 17476718 DOI: 10.1002/elps.200600526] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In this work, a new multiresidue analytical method based on MEKC with UV detection combined with SPE as off-line preconcentration strategy, and reversed-electrode polarity stacking mode (REPSM) as on-line stacking procedure, has been developed for the monitoring of 12 pesticides (carbendazim, pirimicarb, metalaxyl, pyrimethanil, procymidone, nuarimol, azoxystrobin, tebufenozide, fenarimol, benalaxyl, penconazole, and tetradifon) that are currently being used in the Canary Islands (Spain). The optimized MEKC buffer, consisting of 100 mM sodium tetraborate and 30 mM SDS at pH 8.5 with 6% v/v 1-propanol, provided baseline resolution of the 12 pesticides in less than 20 min. The developed method was applied to the analysis of mineral, stagnant, and tap water samples. The proposed SPE-REPSM-MEKC-UV method showed high extraction efficiencies with detection limits (LODs) at the low ng/L level providing LOD values down to 64 ng/L for these real samples.
Collapse
Affiliation(s)
- Lidia M Ravelo-Pérez
- Department of Analytical Chemistry, Nutrition and Food Science, University of La Laguna, La Laguna, Tenerife, Canary Islands, Spain
| | | | | | | |
Collapse
|
21
|
Picó Y, Fernández M, Ruiz MJ, Font G. Current trends in solid-phase-based extraction techniques for the determination of pesticides in food and environment. ACTA ACUST UNITED AC 2007; 70:117-31. [PMID: 17175029 DOI: 10.1016/j.jbbm.2006.10.010] [Citation(s) in RCA: 138] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2006] [Accepted: 10/27/2006] [Indexed: 10/23/2022]
Abstract
Solid-phase extraction (SPE) procedures for pesticide residues in food and environment are reviewed and discussed. The use of these procedures, which include several approaches such as: matrix solid-phase dispersion (MSPD), solid-phase micro-extraction (SPME) and stir-bar sorptive extraction (SBSE), represents an opportunity to reduce analysis time, solvent consumption, and overall cost. SPE techniques differ from solvent extraction depending on the interactions between a sorbent and the pesticide. This interaction may be specific for a particular pesticide, as in the interaction with an immunosorbent, or non-specific, as in the way a number of different pesticides are adsorbed on apolar or polar materials. A variety of applications were classified according to the method applied: conventional SPE, SPME, hollow-fiber micro-extraction (HFME), MSPD and SBSE. Emphasis is placed on the multiresidue analysis of liquid and solid samples.
Collapse
Affiliation(s)
- Yolanda Picó
- Laboratori de Bromatologia i Toxicologia, Facultat de Farmácia, Universitat de Valencia, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
| | | | | | | |
Collapse
|
22
|
Rodriguez-Delgado MA, Hernández-Borges J. Rapid analysis of triazolopyrimidine sulfoanilide herbicides in waters and soils by high-performance liquid chromatography with UV detection using a C18 monolithic column. J Sep Sci 2007; 30:8-14. [PMID: 17313135 DOI: 10.1002/jssc.200600271] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
In this work, the simultaneous analysis of five triazolopyrimidine sulfoanilide herbicides (flumetsulam, florasulam, metosulam, cloransulam-methyl, and diclosulam) by HPLC using UV detection and a C18 monolithic column is proposed. The mobile phase which was composed of ACN, water, and formic acid was pumped at a high flow rate (5 mmL/min) providing an analysis time of all the compounds in less than 2.3 min. The LODs were in the low microg/L range (i.e. between 60 microg/L for flumetsulam and 90 microg/L for florasulam) and the calibration curves showed good linearity (R2 > 0.9949). The method was applied to the analysis of these compounds in spiked mineral and tap waters and soils after an SPE preconcentration procedure using C18 cartridges. Mean recovery values ranged between 35 and 110% for water samples providing LODs of the whole procedure in the low ng/L level, down to 280 ng/L, and between 77 and 92% for soil samples with LODs down to 9.38 microg/kg. This is the first time that this family of pesticides is simultaneously analyzed in both types of samples by HPLC and also using a monolithic column.
Collapse
|
23
|
Recent Progress in 1,2,4-Triazolo[1,5-a]pyrimidine Chemistry. ADVANCES IN HETEROCYCLIC CHEMISTRY 2007. [DOI: 10.1016/s0065-2725(07)95003-5] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
24
|
Ravelo-Pérez LM, Hernández-Borges J, Rodríguez-Delgado MA. Pesticides analysis by liquid chromatography and capillary electrophoresis. J Sep Sci 2006; 29:2557-77. [PMID: 17313096 DOI: 10.1002/jssc.200600201] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Nowadays, a wide range of pesticides are used in agricultural production, and their monitoring in samples of environmental and alimentary interest is of extreme importance to ensure, among others, the safety of consumption of foods. The aim of this work is to provide updated information about the major developments in CE and HPLC in pesticide analysis, covering relevant publications between 2004 and early 2006. The use of different sample pretreatment steps to provide a suitable extraction of these compounds from the different matrices as well as to increase the sensitivity of the determination is also discussed.
Collapse
Affiliation(s)
- Lidia María Ravelo-Pérez
- Department of Analytical Chemistry, Nutrition and Food Science, University of La Laguna, La Laguna, Tenerife, Canary Islands, Spain
| | | | | |
Collapse
|