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Yuan X, Deng Y, Gao J, Zheng T, Xu Y, Wang Y. Unveiling the role of sulfate-reducing bacteria in arsenic methylation in alluvial-lacustrine aquifers. WATER RESEARCH 2025; 283:123864. [PMID: 40408986 DOI: 10.1016/j.watres.2025.123864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2025] [Revised: 05/12/2025] [Accepted: 05/18/2025] [Indexed: 05/25/2025]
Abstract
Arsenic (As) methylation is a crucial process within the geochemical cycle of arsenic in groundwater systems. The transformation of inorganic arsenic into less toxic monomethylarsenate (MMA) and demethylarsenate (DMA) holds the potential to partially mitigate the environmental risk of arsenic, thereby offering a promising strategy for regulating arsenic contamination in groundwater. Sulfate-reducing bacteria (SRB) have demonstrated the ability for As methylation under various environmental conditions. However, the capacity of SRB to methylate As specially in groundwater remains unverified. In this study, the predominant biogeochemical processes contribute to the enrichment of methylated arsenic (MeAs) in alluvial-lacustrine aquifers have been investigated through a combination of hydrogeochemical monitoring and incubation experiments. Field investigations in the Jianghan Plain demonstrated that MeAs concentrations in groundwater ranged from 0.34 to 444 μg/L, which are significantly higher than those reported in other region globally. The results suggested that a strongly reducing and neutral environment with elevated level of As(III) and dissolved organic carbon (DOC) facilitated the accumulation of MeAs in groundwaters. Sulfate reduction emerged as an important promoter of As methylation in groundwater, with Desulfovibrio potentially identified as the key SRB genus through high-throughput sequencing of dsrB gene. Moreover, the incubation experiments showed the As methylation efficiency was up to 22.8 % with As(III) being a critical substrate in the aquifer systems from the Jianghan Plain, while such a lower efficiency compared with paddy soil environments likely attributable to the limited available organic matter and the distinct microbial communities. This study provides novel insights on As methylation mechanisms and theoretical support for in-situ remediation of As-contaminated aquifers.
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Affiliation(s)
- Xiaofang Yuan
- Key Laboratory of Groundwater Quality and Health (China University of Geosciences), Ministry of Education, Wuhan 430078, China; Geological Survey, China University of Geosciences, Wuhan 430074, China
| | - Yamin Deng
- Key Laboratory of Groundwater Quality and Health (China University of Geosciences), Ministry of Education, Wuhan 430078, China; School of Environmental Studies, China University of Geosciences, Wuhan 430078, China.
| | - Jie Gao
- Geological Environment Center of Hubei Province, Wuhan 430034, China; Hubei Key Laboratory of Resources and Eco-Environment Geology, Hubei Geological Bureau, Wuhan 430034, China
| | - Tianliang Zheng
- College of Ecology and Environment, Chengdu University of Technology, Chengdu 610059, China; Tianfu Yongxing Laboratory, Chengdu 610213, China.
| | - Yuxiao Xu
- Key Laboratory of Groundwater Quality and Health (China University of Geosciences), Ministry of Education, Wuhan 430078, China; School of Environmental Studies, China University of Geosciences, Wuhan 430078, China
| | - Yanxin Wang
- Key Laboratory of Groundwater Quality and Health (China University of Geosciences), Ministry of Education, Wuhan 430078, China; School of Environmental Studies, China University of Geosciences, Wuhan 430078, China
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2
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Asif S, Kim N, Jan R, Asaf S, Lubna, Farooq M, Khan W, Khan Z, Kim EG, Jang YH, Park JR, Zhao DD, Kim KM. Determining arsenic stress tolerance genes in rice (Oryza sativa L.) via genomic insights and QTL mapping with double haploid lines. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 214:108941. [PMID: 39029307 DOI: 10.1016/j.plaphy.2024.108941] [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: 05/26/2024] [Revised: 07/12/2024] [Accepted: 07/14/2024] [Indexed: 07/21/2024]
Abstract
Arsenic, a hazardous heavy metal with potent carcinogenic properties, significantly affects key rice-producing regions worldwide. In this study, we present a quantitative trait locus (QTL) mapping investigation designed to identify candidate genes responsible for conferring tolerance to arsenic toxicity in rice (Oryza sativa L.) during the seedling stage. This study identified 17 QTLs on different chromosomes, including qCHC-1 and qCHC-3 on chromosome 1 and 3 related to chlorophyll content and qRFW-12 on chromosome 12 related to root fresh weight. Gene expression analysis revealed eight candidate genes exhibited significant upregulation in the resistant lines, OsGRL1, OsDjB1, OsZIP2, OsMATE12, OsTRX29, OsMADS33, OsABCG29, and OsENODL24. These genes display sequence alignment and phylogenetic tree similarities with other species and engaging in protein-protein interactions with significant proteins. Advanced gene-editing techniques such as CRISPR-Cas9 to precisely target and modify the candidate genes responsible for arsenic tolerance will be explore. This approach may expedite the development of arsenic-resistant rice cultivars, which are essential for ensuring food security in regions affected by arsenic-contaminated soil and water.
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Affiliation(s)
- Saleem Asif
- Department of Applied Biosciences, Graduate School, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Nari Kim
- Department of Applied Biosciences, Graduate School, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Rahmatullah Jan
- Department of Applied Biosciences, Graduate School, Kyungpook National University, Daegu, 41566, Republic of Korea; Coastal Agriculture Research Institute, Kyungpook National University, Daegu, Republic of Korea
| | - Sajjad Asaf
- Natural and Medical Science Research Center, University of Nizwa, Nizwa, Oman
| | - Lubna
- Natural and Medical Science Research Center, University of Nizwa, Nizwa, Oman
| | - Muhammad Farooq
- Agriculture Biology, College of Agriculture & Life Sciences, Jeonbuk National University, Jeonju, Republic of Korea
| | - Waleed Khan
- Department of Applied Biosciences, Graduate School, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Zakirullah Khan
- Department of Applied Biosciences, Graduate School, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Eun-Gyeong Kim
- National Agrobiodiversity Center, National Academy of Agricultural Science, Rural Development Administration, Jeonju, 54874, Republic of Korea
| | - Yoon-Hee Jang
- Gene Engineering Division, National Institute of Agricultural Sciences, RDA, Jeonju, 54874, Republic of Korea
| | - Jae Ryoung Park
- Coastal Agriculture Research Institute, Kyungpook National University, Daegu, Republic of Korea; Crop Breeding Division, National Institute of Crop Science, Rural Development Administration, Wanju, 55365, Republic of Korea
| | - Dan Dan Zhao
- Department of Applied Biosciences, Graduate School, Kyungpook National University, Daegu, 41566, Republic of Korea; Crop Foundation Research Division, National Institute of Crop Science, Rural Development Administration, Wanju, 55365, Republic of Korea
| | - Kyung-Min Kim
- Department of Applied Biosciences, Graduate School, Kyungpook National University, Daegu, 41566, Republic of Korea; Coastal Agriculture Research Institute, Kyungpook National University, Daegu, Republic of Korea.
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3
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Liao Z, Choi K, Ullah Z, Son M, Ahn Y, Khan MA, Prabhu SM, Jeon BH. Artificial neural network modeling for the oxidation kinetics of divalent manganese ions during chlorination and the role of arsenite ions in the binary/ternary systems. WATER RESEARCH 2024; 259:121876. [PMID: 38852391 DOI: 10.1016/j.watres.2024.121876] [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: 03/18/2024] [Revised: 05/23/2024] [Accepted: 06/02/2024] [Indexed: 06/11/2024]
Abstract
This study investigated the coexistence and contamination of manganese (Mn(II)) and arsenite (As(III)) in groundwater and examined their oxidation behavior under different equilibrating parameters, including varying pH, bicarbonate (HCO3-) concentrations, and sodium hypochlorite (NaClO) oxidant concentrations. Results showed that if the molar ratio of NaClO: As(III) was >1, the oxidation of As(III) could be achieved within a minute with an extremely high oxidation rate of 99.7 %. In the binary system, the removal of As(III) prevailed over Mn(II). The As(III) oxidation efficiency increased from 59.8 ± 0.6 % to 70.8 ± 1.9 % when pH rose from 5.7 to 8.0. The oxidation reaction between As(III) and NaClO releases H+ ions, decreasing the pH from 6.77 to 6.19 and reducing the removal efficiency of Mn(II). The presence of HCO3- reduced the oxidation rate of Mn(II) from 63.2 % to 13.9 % within four hours. Instead, the final oxidation rate of Mn(II) increased from 68.1 % to 87.7 %. This increase can be attributed to HCO3- ions competing with the free Mn(II) for the adsorption sites on the sediments, inhibiting the formation of H+. Moreover, kinetic studies revealed that the oxidation reaction between Mn(II) and NaClO followed first-order kinetics based on their R2 values. The significant factors affecting the Mn(II) oxidation efficiency were the initial concentration of NaClO and pH. Applying an artificial neural network (ANN) model for data analysis proved to be an effective tool for predicting Mn(II) oxidation rates under different experimental conditions. The actual Mn(II) oxidation data and the predicted values obtained from the ANN model showed significant consistency. The training and validation data sets yielded R2 values of 0.995 and 0.992, respectively. Moreover, the ANN model highlights the importance of pH and NaClO concentrations in influencing the oxidation rate of Mn(II).
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Affiliation(s)
- Ziqiao Liao
- Department of Earth Resources and Environmental Engineering, Hanyang University, 222-Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - KungWon Choi
- Department of Earth Resources and Environmental Engineering, Hanyang University, 222-Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Zahid Ullah
- Center for Water Cycle Research, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea; Division of Energy and Environment Technology, KIST-School, University of Science and Technology, Seoul 02792, Republic of Korea
| | - Moon Son
- Center for Water Cycle Research, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea; Division of Energy and Environment Technology, KIST-School, University of Science and Technology, Seoul 02792, Republic of Korea
| | - Yongtae Ahn
- Department of Earth Resources and Environmental Engineering, Hanyang University, 222-Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea; Department of Civil & Energy System Engineering, Kyonggi University, Suwon 16227, Republic of Korea
| | - Moonis Ali Khan
- Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Subbaiah Muthu Prabhu
- Department of Chemistry, School of Advanced Science, VIT-AP University, Amaravati 522237, Andhra Pradesh, India
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, 222-Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
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4
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King DCP, Watts MJ, Hamilton EM, Mortimer RJG, Coffey M, Osano O, Ondayo MA, Di Bonito M. Field method for preservation of total mercury in waters, including those associated with artisanal scale gold mining. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:2669-2677. [PMID: 38623773 DOI: 10.1039/d3ay02216a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Analysis of mercury (Hg) in natural water samples has routinely been impractical in many environments, for example, artisanal and small-scale gold mines (ASGM), where difficult conditions make monitoring of harmful elements and chemicals used in the processes highly challenging. Current sampling methods require the use of hazardous or expensive materials, and so difficulties in sample collection and transport are elevated. To solve this problem, a solid-phase extraction-based method was developed for the sampling and preservation of dissolved Hg in natural water samples, particularly those found around ASGM sites. Recoveries of 85% ± 10% total Hg were obtained during 4 weeks of storage in refrigerated (4 °C, dark) and unrefrigerated (16 °C, dark) conditions, and from a representative river water spiked to 1 μg L-1 Hg2+, 94% ± 1% Hg recovery was obtained. Solid-phase extraction loading flow rates were tested at 2, 5, and 10 mL min-1 with no breakthrough of Hg, and sorbent stability showed no breakthrough of Hg up to 2 weeks after functionalisation. The method was deployed across five artisanal gold mines in Kakamega gold belt, Kenya, to assess Hg concentrations in mine shaft water, ore washing ponds, and river and stream water, including drinking water sources. In all waters, Hg concentrations were below the WHO guideline limit value of 6 μg L-1, but drinking water sources contained trace concentrations of up to 0.35 μg L-1 total Hg, which may result in negative health effects from long-term exposure. The SPE method developed and deployed here is a robust sampling method that can therefore be applied in future Hg monitoring, toxicology, and environmental work to provide improved data that is representative of total dissolved Hg in water samples.
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Affiliation(s)
- David C P King
- Nottingham Trent University, Nottingham, UK
- Inorganic Geochemistry Facility, Centre for Environmental Geochemistry, British Geological Survey, Nottingham, UK
| | - Michael J Watts
- Inorganic Geochemistry Facility, Centre for Environmental Geochemistry, British Geological Survey, Nottingham, UK
| | - Elliott M Hamilton
- Inorganic Geochemistry Facility, Centre for Environmental Geochemistry, British Geological Survey, Nottingham, UK
| | | | | | | | | | - Marcello Di Bonito
- Nottingham Trent University, Nottingham, UK
- Unversità di Bologna, Bologna, Italy
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Raturi G, Chaudhary A, Rana V, Mandlik R, Sharma Y, Barvkar V, Salvi P, Tripathi DK, Kaur J, Deshmukh R, Dhar H. Microbial remediation and plant-microbe interaction under arsenic pollution. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 864:160972. [PMID: 36566865 DOI: 10.1016/j.scitotenv.2022.160972] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 12/11/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
Arsenic contamination in aquatic and terrestrial ecosystem is a serious environmental issue. Both natural and anthropogenic processes can introduce it into the environment. The speciation of the As determine the level of its toxicity. Among the four oxidation states of As (-3, 0, +3, and + 5), As(III) and As(V) are the common species found in the environment, As(III) being the more toxic with adverse impact on the plants and animals including human health. Therefore, it is very necessary to remediate arsenic from the polluted water and soil. Different physicochemical as well as biological strategies can be used for the amelioration of arsenic polluted soil. Among the microbial approaches, oxidation of arsenite, methylation of arsenic, biosorption, bioprecipitation and bioaccumulation are the promising transformation activities in arsenic remediation. The purpose of this review is to discuss the significance of the microorganisms in As toxicity amelioration in soil, factors affecting the microbial remediation, interaction of the plants with As resistant bacteria, and the effect of microorganisms on plant arsenic tolerance mechanism. In addition, the exploration of genetic engineering of the bacteria has a huge importance in bioremediation strategies, as the engineered microbes are more potent in terms of remediation activity along with quick adaptively in As polluted sites.
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Affiliation(s)
- Gaurav Raturi
- National Agri-Food Biotechnology Institute (NABI), Mohali, India; Department of Biotechnology, Panjab University, Chandigarh, India
| | - Anchal Chaudhary
- National Agri-Food Biotechnology Institute (NABI), Mohali, India; Department of Biotechnology, Panjab University, Chandigarh, India
| | - Varnika Rana
- National Agri-Food Biotechnology Institute (NABI), Mohali, India
| | - Rushil Mandlik
- National Agri-Food Biotechnology Institute (NABI), Mohali, India; Department of Biotechnology, Panjab University, Chandigarh, India
| | - Yogesh Sharma
- National Agri-Food Biotechnology Institute (NABI), Mohali, India
| | - Vitthal Barvkar
- Department of Botany, Savitribai Phule Pune University, Pune, India
| | - Prafull Salvi
- National Agri-Food Biotechnology Institute (NABI), Mohali, India
| | | | - Jagdeep Kaur
- Department of Biotechnology, Panjab University, Chandigarh, India
| | - Rupesh Deshmukh
- National Agri-Food Biotechnology Institute (NABI), Mohali, India; Plaksha University, SAS Nagar, Punjab, India; Department of Biotechnology, Central University of Haryana, Mahendragarh, Haryana, India.
| | - Hena Dhar
- National Agri-Food Biotechnology Institute (NABI), Mohali, India.
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6
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He Y, Liu J, Duan Y, Yuan X, Ma L, Dhar R, Zheng Y. A critical review of on-site inorganic arsenic screening methods. J Environ Sci (China) 2023; 125:453-469. [PMID: 36375928 DOI: 10.1016/j.jes.2022.01.034] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 01/19/2022] [Accepted: 01/24/2022] [Indexed: 06/16/2023]
Abstract
Approximately 94 to 220 million people worldwide are at risk of drinking well water containing arsenic > 10 µg/L, the WHO guideline value. To identify non-compliant domestic wells, assess health risks and reduce exposure, accurate and rapid on-site inorganic arsenic screening methods are desirable because all domestic wells worldwide need to be tested. Here, the principles, advantages and limitations of commonly used colorimetry, electrochemistry, and biosensing methods are critically reviewed, with the performance compared with laboratory-based benchmark methods. Most commercial kits are based on the classic Gutzeit reaction. Despite being semi-quantitative, the more recent and more expensive products display improved and acceptable accuracy and shorter testing time (∼10 min). Carried out by trained professionals, electrochemical methods are also feasible for on-site analysis, although miniaturization is desirable yet challenging. Biosensing using whole bacterial cells or bio-engineered materials such as aptamers is promising, if incorporated with function specific nanomaterials and biomaterials. Since arsenic is frequently found as arsenite in reducing groundwater and subject to oxidation during sampling, transportation and storage, on-site separation and sample preservation are feasible but the specific methods should be chosen based on sample matrix and tested before use. To eliminate arsenic exposure among hundreds of millions of mostly rural residents worldwide, we call for concerted efforts in research community and regulatory authority to develop accurate, rapid, and affordable tests for on-site screening and monitoring of arsenic in drinking water. Access to affordable testing will benefit people who are socioeconomically disadvantaged.
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Affiliation(s)
- Yi He
- Department of Sciences, John Jay College and the Graduate Center, The City University of New York, NY 10019, USA
| | - Jingyu Liu
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China; Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China; Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, QLD 4102, Australia
| | - Yanhua Duan
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China; Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xiaofei Yuan
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China; Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Lulu Ma
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China; Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ratan Dhar
- Department of Earth and Physical Sciences, York College, The City University of New York, NY 11451, USA
| | - Yan Zheng
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China; Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
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Tao D, Shi C, Guo W, Deng Y, Peng Y, He Y, Lam PKS, He Y, Zhang K. Determination of As species distribution and variation with time in extracted groundwater samples by on-site species separation method. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 808:151913. [PMID: 34863753 DOI: 10.1016/j.scitotenv.2021.151913] [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: 04/29/2021] [Revised: 11/18/2021] [Accepted: 11/19/2021] [Indexed: 06/13/2023]
Abstract
It is challenging to dependably keep the native distribution of arsenic (As) species before sample analysis in the laboratory. The on-site separation method can avoid sample contamination and species change in the process of sample collection and transportation from field to laboratory. In this study, As species distribution and variation of the extracted groundwater was first analyzed by an on-site species separation method in Jianghan Plain, China. Our study illustrated that: 1) high-As groundwater generally existed under mildly reducing conditions (Eh < 200 mV), weak alkaline conditions (pH < 7.2), elevated concentrations of dissolved Fe(II) and S(-II), and high proportions of As (III); 2) As species in the groundwater changed dramatically at room temperature in 36 hours post extraction (HPE). Fe-sulfide and Fe oxides minerals, which adsorbed As (V), were the main reasons influencing the As species concentration; 3) Acidification and strong complexing agents cannot preserve As species effectively. The average proportion of As (III) in the wells, where groundwater samples from the depth of 25 m exceed 10 μg L-1 As, can be reduced by 61% and 63% after HCl and EDTA were added, respectively. Accurate assessment of concentrations and distribution variation of As species in groundwater can guide the removal of As and the safe use of water resources, especially in drought areas relying on drinking well water.
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Affiliation(s)
- Danyang Tao
- State Key Laboratory of Biogeology and Environmental Geology, Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, China University of Geosciences, Wuhan 430074, PR China; State Key Laboratory of Marine Pollution (SKLMP), City University of Hong Kong, Hong Kong, China; Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Changzhi Shi
- State Key Laboratory of Biogeology and Environmental Geology, Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, China University of Geosciences, Wuhan 430074, PR China
| | - Wei Guo
- State Key Laboratory of Biogeology and Environmental Geology, Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, China University of Geosciences, Wuhan 430074, PR China.
| | - Yamin Deng
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, PR China
| | - Yue'e Peng
- State Key Laboratory of Biogeology and Environmental Geology, Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, China University of Geosciences, Wuhan 430074, PR China
| | - Yuhe He
- State Key Laboratory of Marine Pollution (SKLMP), City University of Hong Kong, Hong Kong, China; School of Energy and Environment, City University of Hong Kong, Hong Kong, China
| | - Paul K S Lam
- State Key Laboratory of Marine Pollution (SKLMP), City University of Hong Kong, Hong Kong, China; Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Yuanyuan He
- Laboratoire Génie des Procédés et Matériaux (LGPM), CentraleSupélec, University Paris-Saclay, Gif-sur-Yvette, France
| | - Kai Zhang
- State Key Laboratory of Marine Pollution (SKLMP), City University of Hong Kong, Hong Kong, China; Department of Chemistry, City University of Hong Kong, Hong Kong, China
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8
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Pincetti-Zúniga GP, Richards LA, Daniele L, Boyce AJ, Polya DA. Hydrochemical characterization, spatial distribution, and geochemical controls on arsenic and boron in waters from arid Arica and Parinacota, northern Chile. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150206. [PMID: 34563905 DOI: 10.1016/j.scitotenv.2021.150206] [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: 06/23/2021] [Revised: 08/18/2021] [Accepted: 09/03/2021] [Indexed: 05/14/2023]
Abstract
The livelihood of inhabitants from rural agricultural valleys in the arid Arica and Parinacota Region, northernmost Chile, strongly depends on water from high altitude rainfall and runoff to lower elevation areas. However, elevated arsenic, boron, and other potentially harmful elements compromise water quality, especially in rural areas. Samples (n = 90) of surface, underground, cold, geothermal springs, and treated and raw tap water were studied to assess water quality and to determine the main geochemical controls on water composition, origin, and geochemical evolution along dominant flowpaths. Water from major river basins across the region (Lluta, San Jose, Codpa-Chaca, Camarones and Altiplanicas) were collected for hydrogeochemical analysis of a suite of major and trace elements, δD and δ18O. Our new dataset was supplemented by hydrochemical data (n > 1500 data points) from secondary sources. Results show that 72% of the collected samples had As >10 μg/L (WHO drinking water provisional guideline) and affected 44% of the studied waters used for drinking (n = 32). Based on Chilean irrigation guidelines, elevated salinity (EC > 0.75 mS/cm) affected 80% of sampled waters, which were also impacted by high B (89% > 0.75 mg/L), and As (31% > 50 μg/L). Water composition was strongly controlled by geothermal water and freshwater mixing in high altitude areas. Magnitude and fate of As and B concentration was determined by the geothermal input type. Highest As (~21 mg/L) was associated with circum-neutral Na-Cl waters in Camarones basin, while lower As (~5 mg/L) with acid SO4 waters in Lluta basin. Additionally, evaporative concentration and sediment-water interactions were shown to control the level of As in surface and groundwaters downstream. This works provides a comprehensive analysis and a conceptual model of geochemical controls on regional water compositions, contributing to better understanding the geochemical processes underpinning the water quality challenges in northern Chile.
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Affiliation(s)
- G P Pincetti-Zúniga
- Department of Earth and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, University of Manchester, Manchester M13 9PL, UK.
| | - L A Richards
- Department of Earth and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, University of Manchester, Manchester M13 9PL, UK.
| | - L Daniele
- Departamento de Geología, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago, Chile; Centro de Excelencia en Geotermia de Los Andes (CEGA), Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago, Chile
| | - A J Boyce
- Scottish Universities Environmental Research Centre, East Kilbride G75 0QF, UK
| | - D A Polya
- Department of Earth and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, University of Manchester, Manchester M13 9PL, UK
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9
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Song R, Ma Y, Bi A, Feng B, Huang L, Huang S, Huang X, Yin D, Chen F, Zeng W. Highly selective and sensitive detection of arsenite ions(III) using a novel tetraphenylimidazole-based probe. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:5011-5016. [PMID: 34635885 DOI: 10.1039/d1ay01236c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
More than 200 million people in the world are exposed to areas where the arsenic concentration exceeds the limit allowed for living species, which urges researchers to develop low-cost methods for the selective and fast detection of arsenic ions in environmental samples. Herein, we report a novel tetraphenylimidazole-based probe (TBAB) functionalized with a Schiff base for sensing and detecting arsenic ions in aqueous media. Upon the addition of arsenic ions, an obvious fluorescence change from faint yellow to green was observed visible to the naked eye. The probe can detect arsenic selectively in the presence of interfering substances, with a lower detection limit than 0.7 ppb, a value which is far lower than the limit set by the WHO. A detailed mechanism revealed that the chelation of TBAB with arsenic activated the AIE characteristic, leading to the enhanced fluorescence, which was verified by Job's plot experiment and HRMS. Its practicality was further validated by the analysis of real water samples, demonstrating its potential application for on-site detection and biological application.
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Affiliation(s)
- Rong Song
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China.
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Changsha 410078, China
| | - Yeshuo Ma
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China.
- Department of Geriatric Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Anyao Bi
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China.
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Changsha 410078, China
| | - Bin Feng
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China.
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Changsha 410078, China
| | - Liu Huang
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China.
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Changsha 410078, China
| | - Shuai Huang
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China.
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Changsha 410078, China
| | - Xueyan Huang
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China.
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Changsha 410078, China
| | - Deling Yin
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China.
- Department of Cardiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Fei Chen
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China.
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Changsha 410078, China
| | - Wenbin Zeng
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China.
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Changsha 410078, China
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10
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McGrory E, Henry T, Conroy P, Morrison L. Occurrence, Geochemistry and Speciation of Elevated Arsenic Concentrations in a Fractured Bedrock Aquifer System. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2021; 81:414-437. [PMID: 34519866 PMCID: PMC8478764 DOI: 10.1007/s00244-021-00887-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 08/30/2021] [Indexed: 06/13/2023]
Abstract
The presence of elevated arsenic concentrations (≥ 10 µg L-1) in groundwaters has been widely reported in areas of South-East Asia with recent studies showing its detection in fractured bedrock aquifers is occurring mainly in regions of north-eastern USA. However, data within Europe remain limited; therefore, the objective of this work was to understand the geochemical mobilisation mechanism of arsenic in this geologic setting using a study site in Ireland as a case study. Physicochemical (pH, Eh, d-O2), trace metals, major ion and arsenic speciation samples were collected and analysed using a variety of field and laboratory-based techniques and evaluated using statistical analysis. Groundwaters containing elevated dissolved arsenic concentrations (up to 73.95 µg L-1) were characterised as oxic-alkali groundwaters with the co-occurrence of other oxyanions (including Mo, Se, Sb and U), low dissolved concentrations of Fe and Mn, and low Na/Ca ratios indicated that arsenic was mobilised through alkali desorption of Fe oxyhydroxides. Arsenic speciation using a solid-phase extraction methodology (n = 20) showed that the dominant species of arsenic was arsenate, with pH being a major controlling factor. The expected source of arsenic is sulphide minerals within fractures of the bedrock aquifer with transportation of arsenic and other oxyanion forming elements facilitated by secondary Fe mineral phases. However, the presence of methylarsenical compounds detected in groundwaters illustrates that microbially mediated mobilisation processes may also be (co)-occurring. This study gives insight into the geochemistry of arsenic mobilisation that can be used to further guide research needs in this area for the protection of groundwater resources.
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Affiliation(s)
- Ellen McGrory
- Earth and Ocean Sciences, School of Natural Sciences and Ryan Institute, Environmental, Marine and Energy Research, National University of Ireland, University Road, Galway, H91 TK33, Ireland
| | - Tiernan Henry
- Earth and Ocean Sciences, School of Natural Sciences and Ryan Institute, Environmental, Marine and Energy Research, National University of Ireland, University Road, Galway, H91 TK33, Ireland
| | - Peter Conroy
- Earth and Ocean Sciences, School of Natural Sciences and Ryan Institute, Environmental, Marine and Energy Research, National University of Ireland, University Road, Galway, H91 TK33, Ireland
| | - Liam Morrison
- Earth and Ocean Sciences, School of Natural Sciences and Ryan Institute, Environmental, Marine and Energy Research, National University of Ireland, University Road, Galway, H91 TK33, Ireland.
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11
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Lawson-Wood K, Jaafar M, Felipe-Sotelo M, Ward NI. Investigation of the uptake of molybdenum by plants from Argentinean groundwater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:48929-48941. [PMID: 33928502 PMCID: PMC8410703 DOI: 10.1007/s11356-021-13902-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 04/07/2021] [Indexed: 06/12/2023]
Abstract
Some regions of Argentina are affected by high concentrations of molybdenum, arsenic and vanadium from natural sources in their groundwater. In particular, Mo levels in groundwater from Eduardo Castex (La Pampa, Argentina) typically exceed the guidelines for drinking water formerly established by WHO at 70 μg/L. Therefore, this study investigated the uptake of Mo in plants, using cress (Lepidium sativum L.) as a model using hydroponic experiments with synthetic solutions and groundwater from La Pampa. Cress grown from control experiments (150 μg/L Mo, pH 7) presented an average Mo concentration of 35.2 mg/kg (dry weight, d.w.), higher than the typical total plant range (0.7-2.5 mg/kg d.w.) in the literature. Using pooled groundwater samples (65.0-92.5 μg/L Mo) from wells of La Pampa (Argentina) as growth solutions resulted in significantly lower cress Mo levels (1.89-4.59 mg/kg d.w.) than were obtained for synthetic solutions of equivalent Mo concentration. This may be due to the high levels in these groundwater samples of As, V, Fe and Mn which are known to be associated with volcanic deposits. This research addressed the hitherto scarcity of data about the effect of various physicochemical parameters on the uptake of Mo in plants.
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Affiliation(s)
- Kathryn Lawson-Wood
- ICP-MS Facility, Department of Chemistry, University of Surrey, Guildford, Surrey, GU2 7XH, UK
- Perkin Elmer, Chalfont Road, Seer Green, Buckinghamshire, HP9 2FX, UK
| | - Maisarah Jaafar
- ICP-MS Facility, Department of Chemistry, University of Surrey, Guildford, Surrey, GU2 7XH, UK
- Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
| | - Mónica Felipe-Sotelo
- ICP-MS Facility, Department of Chemistry, University of Surrey, Guildford, Surrey, GU2 7XH, UK.
| | - Neil I Ward
- ICP-MS Facility, Department of Chemistry, University of Surrey, Guildford, Surrey, GU2 7XH, UK
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12
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One-Step Preparation of Chitosan-Based Magnetic Adsorbent and Its Application to the Adsorption of Inorganic Arsenic in Water. Molecules 2021; 26:molecules26061785. [PMID: 33810077 PMCID: PMC8004736 DOI: 10.3390/molecules26061785] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/07/2021] [Accepted: 03/16/2021] [Indexed: 11/16/2022] Open
Abstract
Chitosan is a kind of biodegradable natural polysaccharide, and it is a very promising adsorber material for removing metal ions from aqueous solutions. In this study, chitosan-based magnetic adsorbent CMC@Fe3O4 was synthesized by a one-step method using carboxymethyl chitosan (CMC) and ferric salts under relatively mild conditions. The Fe3O4 microspheres were formed and the core-shell structure of CMC@Fe3O4 was synthesized in the meantime, which was well characterized via SEM/TEM, XRD, VSM, FT-IR, thermo gravimetric analysis (TGA), XPS, size distribution, and zeta potential. The effects of initial arsenic concentration, pH, temperature, contact time, and ionic strength on adsorption quantity of inorganic arsenic was studied through batch adsorption experiments. The magnetic adsorbent CMC@Fe3O4 displayed satisfactory adsorption performance for arsenic in water samples, up to 20.1 mg/g. The optimal conditions of the adsorption process were pH 3.0, 30-50 °C, and a reaction time of 15 min. The adsorption process can be well described by pseudo-second-order kinetic model, suggesting that chemisorption was main rate-controlling step. The Langmuir adsorption model provided much higher correlation coefficient than that of Freundlich adsorption model, indicating that the adsorption behavior is monolayer adsorption on the surface of the magnetic adsorbents. The above results have demonstrated that chitosan-based magnetic adsorbent CMC@Fe3O4 is suitable for the removal of inorganic arsenic in water.
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Jaafar M, Shrivastava A, Rai Bose S, Felipe-Sotelo M, Ward N. Transfer of arsenic, manganese and iron from water to soil and rice plants: An evaluation of changes in dietary intake caused by washing and cooking rice with groundwater from the Bengal Delta, India. J Food Compost Anal 2021. [DOI: 10.1016/j.jfca.2020.103748] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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14
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Banik D, Manna SK, Mahapatra AK. Recent development of chromogenic and fluorogenic chemosensors for the detection of arsenic species: Environmental and biological applications. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 246:119047. [PMID: 33070013 DOI: 10.1016/j.saa.2020.119047] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 09/29/2020] [Accepted: 10/02/2020] [Indexed: 06/11/2023]
Abstract
Due to biological and environmental significance of highly toxic arsenic species, the design, synthesis and development of chemosensors for arsenic species has been a very active research field in recent times. In this review, we summarize recent works on the sensing mechanisms employed by fluorometric/colorimetric chemosensors and their applications in arsenic detection. Various types of sensing strategies can be categorized into six types including (i) chemosensors based on hydrogen bonding interactions; (ii) aggregation induced emission (AIE) based chemosensors; (iii) chemodosimetric approach (reaction-based chemosensors); (iv) metal coordination-based sensing strategy; (v) chemosensors based on metal complex displacement approach and (vi) metal complex as chemosensor. All these sensing strategies are very much simple and sensitive for use in the design of arsenic selective chromogenic and fluorogenic probes.
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Affiliation(s)
- Dipanjan Banik
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, West Bengal, India
| | - Saikat Kumar Manna
- Department of Chemistry, Haldia Government College, Debhog, Purba Medinipur, Haldia 721657, West Bengal, India.
| | - Ajit Kumar Mahapatra
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, West Bengal, India.
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15
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Button M, Koch I, Watts MJ, Reimer KJ. Arsenic speciation in the bracket fungus Fomitopsis betulina from contaminated and pristine sites. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2020; 42:2723-2732. [PMID: 31897873 DOI: 10.1007/s10653-019-00506-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 12/24/2019] [Indexed: 06/10/2023]
Abstract
Uptake, distribution and speciation of arsenic (As) were determined in the bracket fungus Fomitopsis betulina (previously Piptoporus betulinus), commonly known as the birch polypore, collected from a woodland adjacent to a highly contaminated former mine in the Southwest UK and at an uncontaminated site in Quebec, Canada, with no past or present mining activity. The fruiting body was divided into cap, centre and pores representing the top, middle and underside to identify trends in the distribution and transformation of As. Total As, determined by inductively coupled plasma-mass spectrometry (ICP-MS), was approximately tenfold higher in the mushroom from the contaminated compared to the uncontaminated site. Overall, accumulation of As was low relative to values reported for some soil-dwelling species, with maximum levels of 1.6 mg/kg at the contaminated site. Arsenic speciation was performed on aqueous extracts via both anion and cation high-performance liquid chromatography-ICP-MS (HPLC-ICP-MS) and on whole dried samples using X-ray absorption near edge structure (XANES) analysis. Seven As species were detected in F. betulina from the contaminated site by HPLC-ICP-MS: arsenite (AsIII), arsenate (AsV), dimethylarsinate (DMAV), methylarsonate (MAV), trimethylarsine oxide (TMAO), tetramethylarsonium ion (Tetra) and trace levels of arsenobetaine (AB). The same As species were observed at the uncontaminated site with the exception of TMAO and Tetra. Arsenic species were localized throughout the fruiting body at the contaminated site, with the cap and pores containing a majority of AsV, only the cap containing TMAO, and the pores containing higher concentrations of DMAV and MAV as well as tetra and a trace of AB. XANES analysis demonstrated that the predominant form of As at the contaminated site was inorganic AsIII coordinated with sulphur or oxygen and AsV coordinated with oxygen. This is the first account of arsenic speciation in F. betulina or any fungi of the family Fomitopsidaceae.
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Affiliation(s)
- Mark Button
- Fipke Laboratory for Trace Element Research, University of British Columbia Okanagan, Kelowna, BC, V1V 1V7, Canada.
| | - Iris Koch
- Environmental Sciences Group, Royal Military College of Canada, Kingston, ON, K7K 7B4, Canada
| | - Michael J Watts
- Inorganic Geochemistry, Centre for Environmental Geochemistry, British Geological Survey, Nottingham, NG12 5GG, UK
| | - Kenneth J Reimer
- Environmental Sciences Group, Royal Military College of Canada, Kingston, ON, K7K 7B4, Canada
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16
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Bullen JC, Torres-Huerta A, Salaün P, Watson JS, Majumdar S, Vilar R, Weiss DJ. Portable and rapid arsenic speciation in synthetic and natural waters by an As(V)-selective chemisorbent, validated against anodic stripping voltammetry. WATER RESEARCH 2020; 175:115650. [PMID: 32146208 DOI: 10.1016/j.watres.2020.115650] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 01/12/2020] [Accepted: 02/23/2020] [Indexed: 06/10/2023]
Abstract
Inorganic arsenic speciation, i.e. the differentiation between arsenite and arsenate, is an important step for any program aiming to address the global issue of arsenic contaminated groundwater, whether for monitoring purposes or the development of new water treatment regimes. Reliable speciation by easy-to-use, portable and cost-effective analytical techniques is still challenging for both synthetic and natural waters. Here we demonstrate the first application of an As(V)-selective chemisorbent material for simple and portable speciation of arsenic using handheld syringes, enabling high sample throughput with minimal set-up costs. We first show that ImpAs efficiently removes As(V) from a variety of synthetic groundwaters with a single treatment, whilst As(III) is not retained. We then exemplify the potential of ImpAs for simple and fast speciation by determining rate constants for the photooxidation of As(III) in the presence of a TiO2 photocatalyst. Finally, we successfully speciate natural waters spiked with a mix of As(III) and As(V) in both Indian and UK groundwaters with less than 5 mg L-1 dissolved iron. Experimental results using ImpAs agreed with anodic stripping voltammetry (ASV), a benchmark portable technique, with analysis conditions optimised here for the groundwaters of South Asia. This new analytical tool is simple, portable and fast, and should find applications within the overall multi-disciplinary remediation effort that is taking place to tackle this worldwide arsenic problem.
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Affiliation(s)
- Jay C Bullen
- Department of Earth Science and Engineering, Faculty of Engineering, Imperial College London, London, SW7 2BX, UK.
| | - Aaron Torres-Huerta
- Department of Chemistry, White City Campus, Imperial College London, London, W12 OBZ, UK
| | - Pascal Salaün
- Department of Earth, Ocean and Ecological Sciences, School of Environmental Sciences, University of Liverpool, Liverpool, L69 3BX, UK
| | - Jonathan S Watson
- Department of Earth Science and Engineering, Faculty of Engineering, Imperial College London, London, SW7 2BX, UK
| | - Swachchha Majumdar
- CSIR-Central Glass and Ceramic Research Institute, 196, Raja SC Mullick Road, Kolkata, 700032, India
| | - Ramon Vilar
- Department of Chemistry, White City Campus, Imperial College London, London, W12 OBZ, UK
| | - Dominik J Weiss
- Department of Earth Science and Engineering, Faculty of Engineering, Imperial College London, London, SW7 2BX, UK.
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Barral-Fraga L, Barral MT, MacNeill KL, Martiñá-Prieto D, Morin S, Rodríguez-Castro MC, Tuulaikhuu BA, Guasch H. Biotic and Abiotic Factors Influencing Arsenic Biogeochemistry and Toxicity in Fluvial Ecosystems: A Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17072331. [PMID: 32235625 PMCID: PMC7177459 DOI: 10.3390/ijerph17072331] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 03/17/2020] [Accepted: 03/19/2020] [Indexed: 01/20/2023]
Abstract
This review is focused on the biogeochemistry of arsenic in freshwaters and, especially, on the key role that benthic microalgae and prokaryotic communities from biofilms play together in through speciation, distribution, and cycling. These microorganisms incorporate the dominant iAs (inorganic arsenic) form and may transform it to other arsenic forms through metabolic or detoxifying processes. These transformations have a big impact on the environmental behavior of arsenic because different chemical forms exhibit differences in mobility and toxicity. Moreover, exposure to toxicants may alter the physiology and structure of biofilms, leading to changes in ecosystem function and trophic relations. In this review we also explain how microorganisms (i.e., biofilms) can influence the effects of arsenic exposure on other key constituents of aquatic ecosystems such as fish. At the end, we present two real cases of fluvial systems with different origins of arsenic exposure (natural vs. anthropogenic) that have improved our comprehension of arsenic biogeochemistry and toxicity in freshwaters, the Pampean streams (Argentina) and the Anllóns River (Galicia, Spain). We finish with a briefly discussion of what we consider as future research needs on this topic. This work especially contributes to the general understanding of biofilms influencing arsenic biogeochemistry and highlights the strong impact of nutrient availability on arsenic toxicity for freshwater (micro) organisms.
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Affiliation(s)
- Laura Barral-Fraga
- Grup de recerca en Ecologia aquàtica continental (GRECO), Departament de Ciències Ambientals, Universitat de Girona, 17071 Girona, Spain;
- LDAR24—Laboratoire Départemental d’Analyse et de Recherche du Département de la Dordogne, 24660 Coulounieix-Chamiers, Périgueux, France
- Correspondence:
| | - María Teresa Barral
- Instituto CRETUS, Departmento de Edafoloxía e Química Agrícola, Facultade de Farmacia, Campus Vida, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (M.T.B.); (D.M.-P.)
| | - Keeley L. MacNeill
- Forest Ecosystems and Society, Oregon State University, Corvallis, OR 97331, USA;
| | - Diego Martiñá-Prieto
- Instituto CRETUS, Departmento de Edafoloxía e Química Agrícola, Facultade de Farmacia, Campus Vida, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (M.T.B.); (D.M.-P.)
| | - Soizic Morin
- INRAE—Institut National de Recherche en Agriculture, Alimentation et Environnement, UR EABX—Equipe ECOVEA, 33612 Cestas Cedex, France;
| | - María Carolina Rodríguez-Castro
- INEDES—Instituto de Ecología y Desarrollo Sustentable (UNLu-CONICET), Universidad Nacional de Luján, 6700 Buenos Aires, Argentina;
- CONICET—Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Autónoma de Buenos Aires C1425FQB CABA, Argentina
| | - Baigal-Amar Tuulaikhuu
- School of Agroecology, Mongolian University of Life Sciences, Khoroo 11, Ulaanbaatar 17024, Mongolia;
| | - Helena Guasch
- Grup de recerca en Ecologia aquàtica continental (GRECO), Departament de Ciències Ambientals, Universitat de Girona, 17071 Girona, Spain;
- CEAB—Centre d’Estudis Avançats de Blanes, CSIC, Blanes, 17300 Girona, Spain
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18
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Li T, Berberich J, Sahle-Demessie E, Varughese E. A disposable acetylcholine esterase sensor for As(III) determination in groundwater matrix based on 4-acetoxyphenol hydrolysis. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2019; 11:5203-5213. [PMID: 32021658 PMCID: PMC6997941 DOI: 10.1039/c9ay01199d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
There is a lack of field compatible analytical method for the speciation of As(III) to characterize groundwater pollution at anthropogenic sites. To address this issue, an inhibition-based acetylcholine esterase (AchE) sensor was developed to determine As(III) in groundwater. 4-Acetoxyphenol was employed to develop an amperometric assay for AchE activity. This assay was used to guide the fabrication of an AchE sensor with screen-printed carbon electrode. An As(III) determination protocol was developed based on the pseudo-irreversible inhibition mechanism. The analysis has a dynamic range of 2-500 μM (150 - 37,500 μg L-1) for As(III). The sensor exhibited the same dynamic range and sensitivity in a synthetic groundwater matrix. The electrode was stable for at least 150 days at 22 ± 2 °C.
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Affiliation(s)
- Tao Li
- National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, Ohio, 45268, USA
| | - Jason Berberich
- Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, Ohio, 45056, USA
| | - Endalkachew Sahle-Demessie
- National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, Ohio, 45268, USA
| | - Eunice Varughese
- National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, Ohio, 45268, USA
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Rakotonimaro TV, Guittonny M, Neculita CM, Trépanier F, Pépin G. Evaluation of Arsenic Leaching Potential in Gold Mine Tailings Amended with Peat and Mine Drainage Treatment Sludge. JOURNAL OF ENVIRONMENTAL QUALITY 2019; 48:735-745. [PMID: 31180431 DOI: 10.2134/jeq2018.11.0392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Peat and mine drainage treatment sludge can be valorized as amendments on mine sites to stabilize gold mine tailings and reduce the potential leaching of contaminants in pore water. However, the influence of organic amendments on the mobility of metalloids and/or metals in the tailings must be validated, as the leached contaminants may vary according to their type, nature, and origin. The objective of the present study was to evaluate over time the effect of peat- and/or Fe-rich sludge amendments on the mobility of As and metallic cations in the drainage water of tailings potentially producing contaminated neutral drainage. Ten duplicated weathering cell experiments containing tailings alone or amended with peat and/or Fe-rich sludge (5-10% dry weight) were performed and monitored for 112 d. The results showed that as low as 5% peat amendment would promote As mobility in tailings' pore water, with As concentrations exceeding Quebec discharge criteria (>0.2 mg L). In addition, As(III), the most mobile and toxic form, was predominant with 10% peat, whereas organic species were negligible in all cells. The use of peat alone as organic amendment for the stabilization of tailing contaminants could increase the risk of generating As-rich contaminated neutral drainage. Conversely, the mix of only 5% Fe-rich sludge with or without peat decreased As concentrations in leachates by 65 to 80%. Further studies on the use of "peat" or "peat + Fe-rich sludge" as cover or amendment should be conducted with a focus on Fe/As and Ca/As ratios.
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20
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Richards LA, Magnone D, Sültenfuß J, Chambers L, Bryant C, Boyce AJ, van Dongen BE, Ballentine CJ, Sovann C, Uhlemann S, Kuras O, Gooddy DC, Polya DA. Dual in-aquifer and near surface processes drive arsenic mobilization in Cambodian groundwaters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 659:699-714. [PMID: 31096400 DOI: 10.1016/j.scitotenv.2018.12.437] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 12/28/2018] [Indexed: 06/09/2023]
Abstract
Millions of people globally, and particularly in South and Southeast Asia, face chronic exposure to arsenic from reducing groundwaters in which. Arsenic release to is widely attributed largely to reductive dissolution of arsenic-bearing iron minerals, driven by metal reducing bacteria using bioavailable organic matter as an electron donor. However, the nature of the organic matter implicated in arsenic mobilization, and the location within the subsurface where these processes occur, remains debated. In a high resolution study of a largely pristine, shallow aquifer in Kandal Province, Cambodia, we have used a complementary suite of geochemical tracers (including 14C, 3H, 3He, 4He, Ne, δ18O, δD, CFCs and SF6) to study the evolution in arsenic-prone shallow reducing groundwaters along dominant flow paths. The observation of widespread apparent 3H-3He ages of <55years fundamentally challenges some previous models which concluded that groundwater residence times were on the order of hundreds of years. Surface-derived organic matter is transported to depths of >30m, and the relationships between age-related tracers and arsenic suggest that this surface-derived organic matter is likely to contribute to in-aquifer arsenic mobilization. A strong relationship between 3H-3He age and depth suggests the dominance of a vertical hydrological control with an overall vertical flow velocity of ~0.4±0.1m·yr-1 across the field area. A calculated overall groundwater arsenic accumulation rate of ~0.08±0.03μM·yr-1 is broadly comparable to previous estimates from other researchers for similar reducing aquifers in Bangladesh. Although apparent arsenic groundwater accumulation rates varied significantly with site (e.g. between sand versus clay dominated sequences), rates are generally highest near the surface, perhaps reflecting the proximity to the redox cline and/or depth-dependent characteristics of the OM pool, and confounded by localized processes such as continued in-aquifer mobilization, sorption/desorption, and methanogenesis.
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Affiliation(s)
- Laura A Richards
- School of Earth and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, The University of Manchester, Williamson Building, Oxford Road, Manchester M13 9PL, UK.
| | - Daniel Magnone
- School of Earth and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, The University of Manchester, Williamson Building, Oxford Road, Manchester M13 9PL, UK
| | - Jürgen Sültenfuß
- Institute of Environmental Physics, University of Bremen, Bremen 28359, Germany
| | - Lee Chambers
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK
| | - Charlotte Bryant
- NERC Radiocarbon Facility, Scottish Enterprise Technology Park, East Kilbride G75 0QF, UK
| | - Adrian J Boyce
- Scottish Universities Environmental Research Centre, East Kilbride G75 0QF, UK
| | - Bart E van Dongen
- School of Earth and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, The University of Manchester, Williamson Building, Oxford Road, Manchester M13 9PL, UK
| | - Christopher J Ballentine
- School of Earth and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, The University of Manchester, Williamson Building, Oxford Road, Manchester M13 9PL, UK
| | - Chansopheaktra Sovann
- Department of Environmental Science, Royal University of Phnom Penh, Phnom Penh, Cambodia
| | - Sebastian Uhlemann
- British Geological Survey, Environmental Science Centre, Keyworth, Nottingham NG12 5GG, UK
| | - Oliver Kuras
- British Geological Survey, Environmental Science Centre, Keyworth, Nottingham NG12 5GG, UK
| | - Daren C Gooddy
- British Geological Survey, Maclean Building, Wallingford, Oxfordshire OX10 8BB, UK
| | - David A Polya
- School of Earth and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, The University of Manchester, Williamson Building, Oxford Road, Manchester M13 9PL, UK.
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21
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Ranjbar Jafarabadi A, Riyahi Bakhtiari A, Yaghoobi Z, Kong Yap C, Maisano M, Cappello T. Distributions and compositional patterns of polycyclic aromatic hydrocarbons (PAHs) and their derivatives in three edible fishes from Kharg coral Island, Persian Gulf, Iran. CHEMOSPHERE 2019; 215:835-845. [PMID: 30359953 DOI: 10.1016/j.chemosphere.2018.10.092] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 10/06/2018] [Accepted: 10/15/2018] [Indexed: 05/24/2023]
Abstract
This is the first report on bioaccumulation of polycyclic aromatic hydrocarbons (PAHs) and their derivatives (oxygen, nitrogen, sulfur, hydroxyl, carbonyl and methyl-containing PAHs) in three edible marine fishes, namely Lutjanus argentimaculatus, Lethrinus microdon and Scomberomorus guttatus, from Kharg Island, Persian Gulf, Iran. The concentrations (ng g-1dw) of Σ39PAHs resulted significantly higher in fish liver than muscle, with the PAH composition pattern dominated by low molecular weight compounds (naphthalene, alkyl-naphthalenes and phenanthrene). The highest mean concentrations of ∑9 oxygenated and ∑15 hydroxylated PAHs (ng g-1dw) were found ound in L. microdon and L. argentimaculatus, respectively, while the lowest values in S. guttatus. Additionally, the highest mean concentrations of Σ5 carbonylic PAHs (ng g-1dw) were found in L. argentimaculatus, followed by L. microdon. The PAHs levels and distribution in fish liver and muscle were dependent on both the Kow of PAHs congeners and fish lipid contents. Overall, the present findings provide important baseline data for further research on the ecotoxicity of PAHs in aquatic organisms, and consequent implications for human health.
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Affiliation(s)
- Ali Ranjbar Jafarabadi
- Department of Environmental Sciences, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Mazandaran, Iran.
| | - Alireza Riyahi Bakhtiari
- Department of Environmental Sciences, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Mazandaran, Iran.
| | - Zeinab Yaghoobi
- Department of Marine Biology, Faculty of Marine Science, Khorramshahr University of Marine Science and Technology, Khorramshahr, Iran
| | - Chee Kong Yap
- Department of Biology, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Maria Maisano
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Tiziana Cappello
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
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Zeng XC, Yang Y, Shi W, Peng Z, Chen X, Zhu X, Wang Y. Microbially Mediated Methylation of Arsenic in the Arsenic-Rich Soils and Sediments of Jianghan Plain. Front Microbiol 2018; 9:1389. [PMID: 30034374 PMCID: PMC6043643 DOI: 10.3389/fmicb.2018.01389] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 06/06/2018] [Indexed: 12/16/2022] Open
Abstract
Almost nothing is known about the activities and diversities of microbial communities involved in As methylation in arsenic-rich shallow and deep sediments; the correlations between As biomethylation and environmental parameters also remain to be elucidated. To address these issues, we collected 9 arsenic-rich soil/sediment samples from the depths of 1, 30, 65, 95, 114, 135, 175, 200, and 223 m in Jianghan Plain, China. We used microcosm assays to determine the As-methylating activities of the microbial communities in the samples. To exclude false negative results, we amended the microcosms with 0.2 mM As(III) and 20.0 mM lactate. The results indicated that the microbial communities in all of the samples significantly catalyzed arsenic methylation. The arsM genes were detectable from all the samples with the exception of 175 m, and 90 different arsM genes were identified. All of these genes code for new or new-type ArsM proteins, suggesting that new As-methylating microorganisms are widely distributed in the samples from shallow to deep sediments. To determine whether microbial biomethylation of As occurs in the sediments under natural geochemical conditions, we conducted microcosm assays without exogenous As and carbons. After 80.0 days of incubation, approximately 4.5–15.5 μg/L DMAsV were detected in all of the microcosms with the exception of that from 30 m, and 2.0–9.0 μg/L MMAsV were detected in the microcosms of 65, 114, 135, 175, 200, and 223 m; moreover, approximately 18.7–151.5 μg/L soluble As(V) were detected from the nine sediment samples. This suggests that approximately 5.3, 0, 8.1, 28.9, 18.0, 8.7, 13.8, 10.2, and 14.9% of total dissolved As were methylated by the microbial communities in the sediment samples from 1, 30, 65, 95, 114, 135, 175, 200, and 223 m, respectively. The concentrations of biogenic DMAsV show significant positive correlations with the depths of sediments, and negative correlations with the environmental NH4+ and NaCl concentrations, but show no significant correlations with other environmental parameters, such as NO3-, SO42+, TOC, TON, Fe, Sb, Cu, K, Ca, Mg, Mn, and Al. This work helps to better understand the biogeochemical cycles of arsenic in arsenic-rich shallow and deep sediments.
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Affiliation(s)
- Xian-Chun Zeng
- State Key Laboratory of Biogeology and Environmental Geology, School of Environmental Studies, China University of Geosciences, Wuhan, China
| | - Ye Yang
- State Key Laboratory of Biogeology and Environmental Geology, School of Environmental Studies, China University of Geosciences, Wuhan, China.,School of Life Sciences, Wuchang University of Technology, Wuhan, China
| | - Wanxia Shi
- State Key Laboratory of Biogeology and Environmental Geology, School of Environmental Studies, China University of Geosciences, Wuhan, China
| | - Zhaofeng Peng
- State Key Laboratory of Biogeology and Environmental Geology, School of Environmental Studies, China University of Geosciences, Wuhan, China
| | - Xiaoming Chen
- State Key Laboratory of Biogeology and Environmental Geology, School of Environmental Studies, China University of Geosciences, Wuhan, China
| | - Xianbin Zhu
- State Key Laboratory of Biogeology and Environmental Geology, School of Environmental Studies, China University of Geosciences, Wuhan, China
| | - Yanxin Wang
- State Key Laboratory of Biogeology and Environmental Geology, School of Environmental Studies, China University of Geosciences, Wuhan, China
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Jaafar M, Marcilla AL, Felipe-Sotelo M, Ward NI. Effect of food preparation using naturally-contaminated groundwater from La Pampa, Argentina: Estimation of elemental dietary intake from rice and drinking water. Food Chem 2018; 246:258-265. [DOI: 10.1016/j.foodchem.2017.11.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 11/03/2017] [Accepted: 11/06/2017] [Indexed: 10/18/2022]
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24
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Mihucz VG, Enesei D, Veszely Á, Bencs L, Pap-Balázs T, Óvári M, Streli C, Záray G. A simple method for monitoring of removal of arsenic species from drinking water applying on-site separation with solid phase extraction and detection by atomic absorption and X-ray fluorescence based techniques. Microchem J 2017. [DOI: 10.1016/j.microc.2017.08.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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25
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Richards LA, Magnone D, Sovann C, Kong C, Uhlemann S, Kuras O, van Dongen BE, Ballentine CJ, Polya DA. High resolution profile of inorganic aqueous geochemistry and key redox zones in an arsenic bearing aquifer in Cambodia. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 590-591:540-553. [PMID: 28285858 DOI: 10.1016/j.scitotenv.2017.02.217] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 02/24/2017] [Accepted: 02/27/2017] [Indexed: 06/06/2023]
Abstract
Arsenic contamination of groundwaters in South and Southeast Asia is a major threat to public health. In order to better understand the geochemical controls on the mobility of arsenic in a heavily arsenic-affected aquifer in northern Kandal Province, Cambodia, key changes in inorganic aqueous geochemistry have been monitored at high vertical and lateral resolution along dominant groundwater flow paths along two distinct transects. The two transects are characterized by differing geochemical, hydrological and lithological conditions. Arsenic concentrations in groundwater are highly heterogenous, and are broadly positively associated with iron and negatively associated with sulfate and dissolved oxygen. The observed correlations are generally consistent with arsenic mobilization by reductive-dissolution of iron (hydr)oxides. Key redox zones, as identified using groupings of the PHREEQC model equilibrium electron activity of major redox couples (notably ammonium/nitrite; ammonium/nitrate; nitrite/nitrate; dissolved oxygen/water) have been identified and vary with depth, site and season. Mineral saturation is also characterized. Seasonal changes in groundwater chemistry were observed in areas which were (i) sandy and of high permeability; (ii) in close proximity to rivers; and/or (iii) in close proximity to ponds. Such changes are attributed to monsoonal-driven surface-groundwater interactions and are consistent with the separate provenance of recharge sources as identified using stable isotope mixing models.
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Affiliation(s)
- Laura A Richards
- School of Earth and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, The University of Manchester, Williamson Building, Oxford Road, Manchester M13 9PL, UK.
| | - Daniel Magnone
- School of Earth and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, The University of Manchester, Williamson Building, Oxford Road, Manchester M13 9PL, UK
| | - Chansopheaktra Sovann
- Department of Environmental Science, Royal University of Phnom Penh, Phnom Penh, Cambodia
| | - Chivuth Kong
- Faculty of Agricultural Economics and Rural Development, Royal University of Agriculture, Phnom Penh, Cambodia
| | - Sebastian Uhlemann
- British Geological Survey, Environmental Science Centre, Keyworth, Nottingham NG12 5GG, UK; ETH Zurich, Institute of Geophysics, Sonneggstrasse 5, 8092 Zurich, Switzerland
| | - Oliver Kuras
- British Geological Survey, Environmental Science Centre, Keyworth, Nottingham NG12 5GG, UK
| | - Bart E van Dongen
- School of Earth and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, The University of Manchester, Williamson Building, Oxford Road, Manchester M13 9PL, UK
| | | | - David A Polya
- School of Earth and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, The University of Manchester, Williamson Building, Oxford Road, Manchester M13 9PL, UK
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26
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Vera R, Fontàs C, Anticó E. Titanium dioxide solid phase for inorganic species adsorption and determination: the case of arsenic. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:10939-10948. [PMID: 27655617 DOI: 10.1007/s11356-016-7667-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 09/09/2016] [Indexed: 06/06/2023]
Abstract
We have evaluated a new titanium dioxide (Adsorbsia As600) for the adsorption of both inorganic As (V) and As (III) species. In order to characterize the sorbent, batch experiments were undertaken to determine the capacities of As (III) and As (V) at pH 7.3, which were found to be 0.21 and 0.14 mmol g-1, respectively. Elution of adsorbed species was only possible using basic solutions, and arsenic desorbed under batch conditions was 50 % when 60 mg of loaded titanium dioxide was treated with 0.5 M NaOH solution. Moreover, its use as a sorbent for solid-phase extraction and preconcentration of arsenic species from well waters has been investigated, without any previous pretreatment of the sample. Solid-phase extraction was implemented by packing several minicolumns with Adsorbsia As600. The method has been validated showing good accuracy and precision. Acceptable recoveries were obtained when spiked waters at 100-200 μg L-1 were measured. The presence of major anions commonly found in waters did not affect arsenic adsoption, and only silicate at 100 mg L-1 level severely competed with arsenic species to bind to the material. Finally, the measured concentrations in water samples containing arsenic from the Pyrinees (Catalonia, Spain) showed good agreement with the ICP-MS results.
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Affiliation(s)
- R Vera
- Department of Chemistry, University of Girona, Campus Montilivi, 17003, Girona, Spain
| | - C Fontàs
- Department of Chemistry, University of Girona, Campus Montilivi, 17003, Girona, Spain
| | - E Anticó
- Department of Chemistry, University of Girona, Campus Montilivi, 17003, Girona, Spain.
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27
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Bondu R, Cloutier V, Rosa E, Benzaazoua M. Mobility and speciation of geogenic arsenic in bedrock groundwater from the Canadian Shield in western Quebec, Canada. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 574:509-519. [PMID: 27648529 DOI: 10.1016/j.scitotenv.2016.08.210] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 08/30/2016] [Accepted: 08/30/2016] [Indexed: 06/06/2023]
Abstract
High arsenic concentrations occur in groundwater collected from a fractured crystalline bedrock aquifer in western Quebec (Canada). Sampling and analysis of water from 59 private wells reveal that more than half of the bedrock wells exceed the Canadian guideline value of 10μg/l for arsenic, whereas shallow wells in unconsolidated surficial deposits are not affected by the contamination. The weathering of arsenic-bearing sulfides present along the mineralized fault zone is considered to be the primary source of arsenic in groundwater. High-arsenic wells are generally characterized by mildly reducing conditions (Eh<250mV), weak alkaline conditions (pH>7.4), low Ca/Na ratios, elevated dissolved Fe and Mn concentrations and high proportions of As(III). Private bedrock wells are open boreholes that likely receive groundwater from multiple contributing fractures. Hence, it is proposed that dissolved arsenic is mainly derived from the contribution to the well discharge of reducing and alkaline geochemically evolved groundwater that contains arsenic as As(III). Geochemically evolved groundwater provides favorable conditions to release arsenic by reductive dissolution of iron and manganese oxyhydroxides and alkaline desorption from mineral surfaces. Thus, high-arsenic wells would contain a high proportion of geochemically evolved groundwater, while oxidizing low-pH recharge water causes dilution and sequestration of arsenic. In relation with the chemical evolution of groundwater along the flow path, most contaminated wells are located in confined areas whereas most of the wells located in unconfined recharge areas are not contaminated. The occurrence of boreholes with high dissolved arsenic as As(V) and oxidizing conditions is attributed to extensive sulfide oxidation and alkaline desorption. This work shows that the determination of arsenic speciation provides a valuable tool to investigate the behavior of arsenic in bedrock groundwater.
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Affiliation(s)
- Raphaël Bondu
- Institut de Recherche en Mines et en Environnement, Université du Québec en Abitibi-Témiscamingue, 341 rue Principale Nord, Amos J9T 2L8, Canada.
| | - Vincent Cloutier
- Institut de Recherche en Mines et en Environnement, Université du Québec en Abitibi-Témiscamingue, 341 rue Principale Nord, Amos J9T 2L8, Canada
| | - Eric Rosa
- Institut de Recherche en Mines et en Environnement, Université du Québec en Abitibi-Témiscamingue, 341 rue Principale Nord, Amos J9T 2L8, Canada
| | - Mostafa Benzaazoua
- Institut de Recherche en Mines et en Environnement, Université du Québec en Abitibi-Témiscamingue, 475 boulevard de l'Université, Rouyn-Noranda J9X 5E4, Canada
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28
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Ullrich MK, Misiari V, Planer-Friedrich B. A new method for thioarsenate preservation in iron-rich waters by solid phase extraction. WATER RESEARCH 2016; 102:542-550. [PMID: 27423048 DOI: 10.1016/j.watres.2016.07.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 05/10/2016] [Accepted: 07/04/2016] [Indexed: 06/06/2023]
Abstract
In order to preserve iron-rich samples for arsenic speciation analysis, mineral acids or EDTA are typically added to prevent oxidation and precipitation of iron. However, when sulfide is present, and thioarsenates ([HAs(V)S(-II)nO4-n](2-), n = 1-4) can form, these methods are unsuitable due to arsenic sulfide precipitation or artifact speciation changes. Here, a new method based on separating the anionic arsenic species from cationic iron in the presence of sulfide via solid phase extraction (SPE) has been investigated. Synthetic solutions containing arsenite, arsenate, monothioarsenate, and trithioarsenate were passed through the anion-exchange resin AG2-X8, after which the resin was washed, eluted, and speciation of each step analyzed by IC-ICP-MS. Retention on the resin of 96.8 ± 0.2%, 98.8 ± 0.2%, and 99.6 ± 0.3% was found for arsenate, monothioarsenate, and trithioarsenate, respectively. Cationic iron (90 μM Fe(II)) was not retained (0.4 ± 0.2%). Uncharged arsenite passed through the resin in the absence of sulfide, while 47.3% of arsenite were retained at tenfold sulfide excess via thiol groups binding to the organic resin structure. Elution with 3 × 15 mL of 0.5 M salicylate, including a soak time, resulted in quantitative recovery of all retained species. Stability of the retained species on the resin was tested with iron-rich, natural waters from a Czech mineral spring. Arsenate, monothioarsenate, dithioarsenate, and trithioarsenate were successfully separated from iron and recovered after 6 d. Thus, SPE presents a viable answer to the problem of preserving arsenic in the presence of both iron and sulfide.
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Affiliation(s)
- Maria K Ullrich
- Environmental Geochemistry, Bayreuth Center for Ecology and Environmental Research (BayCEER), University of Bayreuth, 95440 Bayreuth, Germany
| | - Valentina Misiari
- Environmental Geochemistry, Bayreuth Center for Ecology and Environmental Research (BayCEER), University of Bayreuth, 95440 Bayreuth, Germany
| | - Britta Planer-Friedrich
- Environmental Geochemistry, Bayreuth Center for Ecology and Environmental Research (BayCEER), University of Bayreuth, 95440 Bayreuth, Germany.
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29
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Antonova S, Zakharova E. Inorganic arsenic speciation by electroanalysis. From laboratory to field conditions: A mini-review. Electrochem commun 2016. [DOI: 10.1016/j.elecom.2016.06.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
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30
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An evaluation of the bioaccessibility of arsenic in corn and rice samples based on cloud point extraction and hydride generation coupled to atomic fluorescence spectrometry. Food Chem 2016; 204:475-482. [DOI: 10.1016/j.foodchem.2016.02.149] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Revised: 02/05/2016] [Accepted: 02/25/2016] [Indexed: 11/17/2022]
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31
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Middleton DRS, Watts MJ, Hamilton EM, Fletcher T, Leonardi GS, Close RM, Exley KS, Crabbe H, Polya DA. Prolonged exposure to arsenic in UK private water supplies: toenail, hair and drinking water concentrations. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2016; 18:562-74. [PMID: 27120003 DOI: 10.1039/c6em00072j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Chronic exposure to arsenic (As) in drinking water is an established cause of cancer and other adverse health effects. Arsenic concentrations >10 μg L(-1) were previously measured in 5% of private water supplies (PWS) in Cornwall, UK. The present study investigated prolongued exposure to As by measuring biomarkers in hair and toenail samples from 212 volunteers and repeated measurements of As in drinking water from 127 households served by PWS. Strong positive Pearson correlations (rp = 0.95) indicated stability of water As concentrations over the time period investigated (up to 31 months). Drinking water As concentrations were positively correlated with toenail (rp = 0.53) and hair (rp = 0.38) As concentrations - indicative of prolonged exposure. Analysis of washing procedure solutions provided strong evidence of the effective removal of exogenous As from toenail samples. Significantly higher As concentrations were measured in hair samples from males and smokers and As concentrations in toenails were negatively associated with age. A positive association between seafood consumption and toenail As and a negative association between home-grown vegetable consumption and hair As was observed for volunteers exposed to <1 As μg L(-1) in drinking water. These findings have important implications regarding the interpretation of toenail and hair biomarkers. Substantial variation in biomarker As concentrations remained unaccounted for, with soil and dust exposure as possible explanations.
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Affiliation(s)
- D R S Middleton
- School of Earth, Atmospheric and Environmental Sciences & William Research Centre for Molecular Environmental Science, University of Manchester, Oxford Rd, Manchester, M13 9PL, UK
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32
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Zhou Q, Zheng Z, Xiao J, Fan H. Sensitive determination of As (III) and As (V) by magnetic solid phase extraction with Fe@polyethyleneimine in combination with hydride generation atomic fluorescence spectrometry. Talanta 2016; 156-157:196-203. [PMID: 27260453 DOI: 10.1016/j.talanta.2016.05.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 05/03/2016] [Accepted: 05/09/2016] [Indexed: 11/30/2022]
Abstract
The magnetic nanomaterial Fe@polyethyleneimine (Fe@PEI) was successfully synthesized and used as an effective adsorbent material for magnetic solid phase extraction(MSPE) of As(III) and As(V) from water samples. Fe@SiO2 nanoparticles were prepared by one pot synthetic method using a borohydride reduction method, then modified with (3-chloropropyl)trimethoxysilane to obtain Fe@SiO2-Cl by chloropropylation, which was reacted with PEI to achieve Fe@polyethyleneimine (Fe@PEI). The microstructure and morphology of Fe@PEI were characterized by transmission electron microscoscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction (XRD). The experimental results showed that Fe@PEI demonstrated excellent adsorption for As(III) and As(V). Based on this fact, the determination method for these two arsenic species earned good limits of detection (LODs) of 0.002μgL(-1) and wide calibration curves in the concentration range from 0.008 to 0.2μgL(-1). The precisions of As (III) and As (V)were 1.95% and 2.55% (RSD, n=6), respectively. The proposed method was validated with real samples and the spiked recoveries were in the range of 82.7-98.3% and the accuracies were in the range of 2-13.3%. The results demonstrated that the developed MSPE method had good advantages such as simplicity, rapid separation, low cost, easy to reuse and high-quality analytical performances, which made it attractive for rapid and efficient extraction of inorganic arsenic species in the environmental water samples.
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Affiliation(s)
- Qingxiang Zhou
- College of Geosciences, China University of Petroleum Beijing, Beijing 102249, China.
| | - Zhenwen Zheng
- College of Geosciences, China University of Petroleum Beijing, Beijing 102249, China; College of Chemistry and bioengineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Junping Xiao
- College of Chemistry and bioengineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Huili Fan
- College of Chemistry and bioengineering, University of Science and Technology Beijing, Beijing 100083, China
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33
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Fu Z, Li W, Xing X, Xu M, Liu X, Li H, Xue Y, Liu Z, Tang J. Genetic analysis of arsenic accumulation in maize using QTL mapping. Sci Rep 2016; 6:21292. [PMID: 26880701 PMCID: PMC4754706 DOI: 10.1038/srep21292] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 01/21/2016] [Indexed: 01/23/2023] Open
Abstract
Arsenic (As) is a toxic heavy metal that can accumulate in crops and poses a threat to human health. The genetic mechanism of As accumulation is unclear. Herein, we used quantitative trait locus (QTL) mapping to unravel the genetic basis of As accumulation in a maize recombinant inbred line population derived from the Chinese crossbred variety Yuyu22. The kernels had the lowest As content among the different maize tissues, followed by the axes, stems, bracts and leaves. Fourteen QTLs were identified at each location. Some of these QTLs were identified in different environments and were also detected by joint analysis. Compared with the B73 RefGen v2 reference genome, the distributions and effects of some QTLs were closely linked to those of QTLs detected in a previous study; the QTLs were likely in strong linkage disequilibrium. Our findings could be used to help maintain maize production to satisfy the demand for edible corn and to decrease the As content in As-contaminated soil through the selection and breeding of As pollution-safe cultivars.
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Affiliation(s)
- Zhongjun Fu
- Key Laboratory of Wheat and Maize Crops Science, Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
- Maize Research Institute, Chongqing Academy of Agricultural Sciences, Chongqing 401329, China
| | - Weihua Li
- Key Laboratory of Wheat and Maize Crops Science, Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
| | - Xiaolong Xing
- Key Laboratory of Wheat and Maize Crops Science, Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
| | - Mengmeng Xu
- Key Laboratory of Wheat and Maize Crops Science, Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
| | - Xiaoyang Liu
- Key Laboratory of Wheat and Maize Crops Science, Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
| | - Haochuan Li
- Key Laboratory of Wheat and Maize Crops Science, Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
| | - Yadong Xue
- Key Laboratory of Wheat and Maize Crops Science, Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
| | - Zonghua Liu
- Key Laboratory of Wheat and Maize Crops Science, Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
| | - Jihua Tang
- Key Laboratory of Wheat and Maize Crops Science, Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
- Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou 434023, China
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34
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On-site quantitation of arsenic in drinking water by disk solid-phase extraction/mobile X-ray fluorescence spectrometry. Talanta 2015; 144:788-92. [DOI: 10.1016/j.talanta.2015.07.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 06/26/2015] [Accepted: 07/01/2015] [Indexed: 11/21/2022]
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35
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Rosas-Castor J, Portugal L, Ferrer L, Guzmán-Mar J, Hernández-Ramírez A, Cerdà V, Hinojosa-Reyes L. Arsenic fractionation in agricultural soil using an automated three-step sequential extraction method coupled to hydride generation-atomic fluorescence spectrometry. Anal Chim Acta 2015; 874:1-10. [DOI: 10.1016/j.aca.2015.03.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 03/10/2015] [Accepted: 03/11/2015] [Indexed: 11/25/2022]
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Rosas-Castor JM, Guzmán-Mar JL, Alfaro-Barbosa JM, Hernández-Ramírez A, Pérez-Maldonado IN, Caballero-Quintero A, Hinojosa-Reyes L. Evaluation of the transfer of soil arsenic to maize crops in suburban areas of San Luis Potosi, Mexico. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 497-498:153-162. [PMID: 25128885 DOI: 10.1016/j.scitotenv.2014.07.072] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 07/18/2014] [Accepted: 07/18/2014] [Indexed: 06/03/2023]
Abstract
The presence of arsenic (As) in agricultural food products is a matter of concern because it can cause adverse health effects at low concentrations. Agricultural-product intake constitutes a principal source for As exposure in humans. In this study, the contribution of the chemical-soil parameters in As accumulation and translocation in the maize crop from a mining area of San Luis Potosi was evaluated. The total arsenic concentration and arsenic speciation were determined by HG-AFS and IC-HG-AFS, respectively. The data analysis was conducted by cluster analysis (CA) and principal component analysis (PCA). The soil pH presented a negative correlation with the accumulated As in each maize plant part, and parameters such as iron (Fe) and manganese (Mn) presented a higher correlation with the As translocation in maize. Thus, the metabolic stress in maize may induce organic acid exudation leading a higher As bioavailability. A high As inorganic/organic ratio in edible maize plant tissues suggests a substantial risk of poisoning by this metalloid. Careful attention to the chemical changes in the rhizosphere of the agricultural zones that can affect As transfer through the food chain could reduce the As-intoxication risk of maize consumers.
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Affiliation(s)
- J M Rosas-Castor
- Universidad Autónoma de Nuevo León, Department of Chemistry Sciences, San Nicolás de los Garza, NL 66451, Mexico
| | - J L Guzmán-Mar
- Universidad Autónoma de Nuevo León, Department of Chemistry Sciences, San Nicolás de los Garza, NL 66451, Mexico
| | - J M Alfaro-Barbosa
- Universidad Autónoma de Nuevo León, Department of Chemistry Sciences, San Nicolás de los Garza, NL 66451, Mexico
| | - A Hernández-Ramírez
- Universidad Autónoma de Nuevo León, Department of Chemistry Sciences, San Nicolás de los Garza, NL 66451, Mexico
| | - I N Pérez-Maldonado
- Universidad Autónoma de San Luis Potosí, Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), San Luis Potosí, SLP 78210, Mexico
| | - A Caballero-Quintero
- Procuraduría General de Justicia del Estado de Nuevo León, Laboratorio de Química Forense, Criminalística y Servicios Periciales, Monterrey, NL 66451, Mexico
| | - L Hinojosa-Reyes
- Universidad Autónoma de Nuevo León, Department of Chemistry Sciences, San Nicolás de los Garza, NL 66451, Mexico.
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Rosas-Castor JM, Guzmán-Mar JL, Hernández-Ramírez A, Garza-González MT, Hinojosa-Reyes L. Arsenic accumulation in maize crop (Zea mays): a review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 488-489:176-87. [PMID: 24830930 DOI: 10.1016/j.scitotenv.2014.04.075] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2013] [Revised: 04/20/2014] [Accepted: 04/20/2014] [Indexed: 05/09/2023]
Abstract
Arsenic (As) is a metalloid that may represent a serious environmental threat, due to its wide abundance and the high toxicity particularly of its inorganic forms. The use of arsenic-contaminated groundwater for irrigation purposes in crop fields elevates the arsenic concentration in topsoil and its phytoavailability for crops. The transfer of arsenic through the crops-soil-water system is one of the more important pathways of human exposure. According to the Food and Agriculture Organization of the United Nations, maize (Zea mays L.) is the most cultivated cereal in the world. This cereal constitutes a staple food for humans in the most of the developing countries in Latin America, Africa, and Asia. Thus, this review summarizes the existing literature concerning the conditions involved in agricultural soil that leads to As influx into maize crops and the uptake mechanisms, metabolism and phytotoxicity of As in corn plants. Additionally, the studies of the As accumulation in raw corn grain and corn food are summarized, and the As biotransfer into the human diet is highlighted. Due to high As levels found in editable plant part for livestock and humans, the As uptake by corn crop through water-soil-maize system may represent an important pathway of As exposure in countries with high maize consumption.
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Affiliation(s)
- J M Rosas-Castor
- Universidad Autónoma de Nuevo León, UANL, Department of Chemistry Sciences, San Nicolás de los Garza, N.L. 66451, Mexico
| | - J L Guzmán-Mar
- Universidad Autónoma de Nuevo León, UANL, Department of Chemistry Sciences, San Nicolás de los Garza, N.L. 66451, Mexico
| | - A Hernández-Ramírez
- Universidad Autónoma de Nuevo León, UANL, Department of Chemistry Sciences, San Nicolás de los Garza, N.L. 66451, Mexico
| | - M T Garza-González
- Universidad Autónoma de Nuevo León, UANL, Department of Chemistry Sciences, San Nicolás de los Garza, N.L. 66451, Mexico
| | - L Hinojosa-Reyes
- Universidad Autónoma de Nuevo León, UANL, Department of Chemistry Sciences, San Nicolás de los Garza, N.L. 66451, Mexico.
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An J, Kim KH, Kim JA, Jung H, Yoon HO, Seo J. A simplified analysis of dimethylarsinic acid by wavelength dispersive X-ray fluorescence spectrometry combined with a strong cation exchange disk. JOURNAL OF HAZARDOUS MATERIALS 2013; 260:24-31. [PMID: 23747461 DOI: 10.1016/j.jhazmat.2013.04.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2013] [Revised: 04/08/2013] [Accepted: 04/24/2013] [Indexed: 06/02/2023]
Abstract
Dimethylarsinic acid (DMA(V)) was pre-concentrated from water samples using a strong cation exchange (SCX) disk functionalized with sulfonic groups, before being analyzed by wavelength dispersive X-ray fluorescence spectrometry (WDXRF). The adsorption of DMA(V) occurred preferentially on the surface of the SCX disk, regardless of pH levels, probably due to interactions with the sulfonic functional groups. However, no other arsenic species, such as arsenate (iAs(V)), arsenite (iAs(III)), and monomethylarsonic acid (MMA(V)), were retained. The SCX-WDXRF method produced a strongly linear calibration curve (R(2)=0.9996) with its limit of detection at 0.218 μgL(-1) when a one-liter water sample was used for pre-concentration. The As intensity of the system was sensitive to the Pb content retained on the SCX disk owing to the proximity of the As-Kα and Pb-Lα lines. To compensate for this interference, a correction factor was developed by considering the calibration slope ratio between the X-ray intensity measured at a Bragg angle of 48.781° and the Pb content of the SCX disks. The results of spike tests for iAs(V), iAs(III), MMA(V), and DMA(V) with and without the addition of Pb in synthetic landfill leachate exhibited reasonable recoveries (i.e., 98-105%) after the spectral adjustment for the Pb interference.
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Affiliation(s)
- Jinsung An
- Seoul Center, Korea Basic Science Institute, 126-16 5th Street, Anamdong, Sungbukgu, Seoul 136-713, Republic of Korea
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Sugár É, Tatár E, Záray G, Mihucz VG. Field separation‐based speciation analysis of inorganic arsenic in public well water in Hungary. Microchem J 2013. [DOI: 10.1016/j.microc.2012.05.025] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Farnfield HR, Marcilla AL, Ward NI. Arsenic speciation and trace element analysis of the volcanic río Agrio and the geothermal waters of Copahue, Argentina. THE SCIENCE OF THE TOTAL ENVIRONMENT 2012; 433:371-378. [PMID: 22819888 DOI: 10.1016/j.scitotenv.2012.05.098] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Revised: 05/31/2012] [Accepted: 05/31/2012] [Indexed: 06/01/2023]
Abstract
Surface water originating from the Copahue volcano crater-lake was analysed for total arsenic and four arsenic species: arsenite (iAs(III)), arsenate (iAs(V)), monomethylarsonic acid (MA(V)) and dimethylarsinic acid (DMA(V)) and other trace elements (Fe, Mn, V, Cr, Ni, Zn). A novel in-field technique for the preconcentration and separation of four arsenic species was, for the first time, used for the analysis of geothermal and volcanic waters. Total arsenic levels along the río Agrio ranged from <0.2-3783 μg/l As(T). The highest arsenic levels were recorded in the el Vertedero spring (3783 μg/l As(T)) on the flank of the Copahue volcano, which feeds the acidic río Agrio. Arsenite (H(3)AsO(3)) predominated along the upper río Agrio (78.9-81.2% iAs(III)) but the species distribution changed at lago Caviahue and arsenate (H(2)AsO(4)(-)) became the main species (51.4-61.4% iAs(V)) up until Salto del Agrio. The change in arsenic species is potentially a result of an increase in redox potential and the formation of iron-based precipitates. Arsenic speciation showed a statistically significant correlation with redox potential (r=0.9697, P=0.01). Both total arsenic and arsenic speciation displayed a statistically significant correlation with vanadium levels along the river (r=0.9961, P=0.01 and r=0.8488, P=0.05, respectively). This study highlights that chemical speciation analysis of volcanic waters is important in providing ideas on potential chemical toxicity. Furthermore there is a need for further work evaluating how arsenic (and other trace elements), released in volcanic and geothermal streams/vents, impacts on both biota and humans (via exposure in thermal pools or consuming commercial drinking water).
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Affiliation(s)
- Hannah R Farnfield
- ICP-MS Facility, Chemical Sciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom
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Lord G, Kim N, Ward NI. Arsenic speciation of geothermal waters in New Zealand. ACTA ACUST UNITED AC 2012; 14:3192-201. [DOI: 10.1039/c2em30486d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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O'Reilly J, Watts MJ, Shaw RA, Marcilla AL, Ward NI. Arsenic contamination of natural waters in San Juan and La Pampa, Argentina. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2010; 32:491-515. [PMID: 20480386 DOI: 10.1007/s10653-010-9317-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2009] [Accepted: 02/26/2010] [Indexed: 05/29/2023]
Abstract
Arsenic (As) speciation in surface and groundwater from two provinces in Argentina (San Juan and La Pampa) was investigated using solid phase extraction (SPE) cartridge methodology with comparison to total arsenic concentrations. A third province, Río Negro, was used as a control to the study. Strong cation exchange (SCX) and strong anion exchange (SAX) cartridges were utilised in series for the separation and preservation of arsenite (As(III)), arsenate (As(V)), monomethylarsonic acid (MA(V)) and dimethylarsinic acid (DMA(V)). Samples were collected from a range of water outlets (rivers/streams, wells, untreated domestic taps, well water treatment works) to assess the relationship between total arsenic and arsenic species, water type and water parameters (pH, conductivity and total dissolved solids, TDS). Analysis of the waters for arsenic (total and species) was performed by inductively coupled plasma mass spectrometry (ICP-MS) in collision cell mode. Total arsenic concentrations in the surface and groundwater from Encon and the San José de Jáchal region of San Juan (north-west Argentina within the Cuyo region) ranged from 9 to 357 μg l(-1) As. Groundwater from Eduardo Castex (EC) and Ingeniero Luiggi (LU) in La Pampa (central Argentina within the Chaco-Pampean Plain) ranged from 3 to 1326 μg l(-1) As. The pH range for the provinces of San Juan (7.2-9.7) and La Pampa (7.0-9.9) are in agreement with other published literature. The highest total arsenic concentrations were found in La Pampa well waters (both rural farms and pre-treated urban sources), particularly where there was high pH (typically > 8.2), conductivity (>2,600 μS cm(-1)) and TDS (>1,400 mg l(-1)). Reverse osmosis (RO) treatment of well waters in La Pampa for domestic drinking water in EC and LU significantly reduced total arsenic concentrations from a range of 216-224 μg l(-1) As to 0.3-0.8 μg l(-1) As. Arsenic species for both provinces were predominantly As(III) and As(V). As(III) and As(V) concentrations in San Juan ranged from 4-138 μg l(-1) to <0.02-22 μg l(-1) for surface waters (in the San José de Jáchal region) and 23-346 μg l(-1) and 0.04-76 μg l(-1) for groundwater, respectively. This translates to a relative As(III) abundance of 69-100% of the total arsenic in surface waters and 32-100% in groundwater. This is unexpected because it is typically thought that in oxidising conditions (surface waters), the dominant arsenic species is As(V). However, data from the SPE methodology suggests that As(III) is the prevalent species in San Juan, indicating a greater influence from reductive processes. La Pampa groundwater had As(III) and As(V) concentrations of 5-1,332 μg l(-1) and 0.09-592 μg l(-1) for EC and 32-242 μg l(-1) and 30-277 μg l(-1) As for LU, respectively. Detectable levels of MA(V) were reported in both provinces up to a concentration of 79 μg l(-1) (equating to up to 33% of the total arsenic). Previously published literature has focused primarily on the inorganic arsenic species, however this study highlights the potentially significant concentrations of organoarsenicals present in natural waters. The potential for separating and preserving individual arsenic species in the field to avoid transformation during transport to the laboratory, enabling an accurate assessment of in situ arsenic speciation in water supplies is discussed.
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Affiliation(s)
- J O'Reilly
- British Geological Survey, Keyworth, Nottingham, NG12 5GG, UK
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