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Cai C, Wang WX. Reduced copper uptake and efflux by the mussel Mytilus coruscus after Cu exposure: Implication for biomonitoring. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 362:124956. [PMID: 39278560 DOI: 10.1016/j.envpol.2024.124956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2024] [Revised: 09/10/2024] [Accepted: 09/12/2024] [Indexed: 09/18/2024]
Abstract
The hard-shell mussels Mytilus coruscus have been extensively employed in pollution biomonitoring. Earlier studies indicated that metal concentrations in Mytilus coruscus may not accurately reflect the true metal contamination levels in the sampling areas, possibly due to their modified metal uptake and efflux. Given the likelihood of mussels in the field being exposed to intermittent metal contaminants, this study investigated whether different Cu pre-exposures significantly affected its uptake and efflux upon Cu exposure. We found significant reduction in Cu uptake rate constant (ku) and efflux rate constant (ke) in the mussels with varying Cu pre-exposure regimes. Specifically, the ku decreased from 1.55 ± 0.37 L g-1 d-1 in the control group to 0.65 ± 0.19 after 5 days and 0.53 ± 0.28 after 15 days of exposure to 20 μg L-1 Cu, respectively, and then was further reduced to as low as 0.096 ± 0.046 L g-1 d-1 following a 5-day exposure at 50 μg L-1 Cu. Similarly, the ke decreased from 0.18 ± 0.020 to 0.15 ± 0.015 d-1 following 5-15 days of exposure to 20 μg L-1 Cu, and further decreased to 0.081 ± 0.023 d-1 after a 5-day exposure at 50 μg L-1 Cu. Our subcellular distribution analysis underscored the critical role of the metallothionein-like protein (MTLP) fraction in modifying both Cu ku and ke during the rapid-depuration phase (ke1), whereas the metal-rich granule (MRG) fraction influenced the ke during the second depuration phase (ke2). This study demonstrated that environmental assessments utilizing biomonitoring species should consider the exposure of these organisms to ensure accurate interpretations of metal contamination in marine ecosystems and enhance the effectiveness of these species in environmental monitoring. This crucial factor is often overlooked, potentially skewing data and leading to misinterpretations of environmental health and pollution levels.
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Affiliation(s)
- Chunzhi Cai
- Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, China; School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Wen-Xiong Wang
- Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, China; School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China.
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2
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Takemura Mariano MV, Paganotto Leandro L, Gomes KK, Dos Santos AB, de Rosso VO, Dafre AL, Farina M, Posser T, Franco JL. Assessing the disparity: comparative toxicity of Copper in zebrafish larvae exposes alarming consequences of permissible concentrations in Brazil. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2024; 87:166-184. [PMID: 38073470 DOI: 10.1080/15287394.2023.2290630] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
Copper (Cu) is a naturally occurring metal with essential micronutrient properties. However, this metal might also pose increased adverse environmental and health risks due to industrial and agricultural activities. In Brazil, the maximum allowable concentration of Cu in drinking water is 2 mg/L. Despite this standard, the impact of such concentrations on aquatic organisms remains unexplored. This study aimed to evaluate the toxicity of CuSO4 using larval zebrafish at environmentally relevant concentrations. Zebrafish (Danio rerio) larvae at 72 hr post-fertilization (hpf) were exposed to nominal CuSO4 concentrations ranging from 0.16 to 48 mg/L to determine the median lethal concentration (LC50), established at 8.4 mg/L. Subsequently, non-lethal concentrations of 0.16, 0.32, or 1.6 mg/L were selected for assessing CuSO4 -induced toxicity. Morphological parameters, including body length, yolk sac area, and swim bladder area, were adversely affected by CuSO4 exposure, particularly at 1.6 mg/L (3.31 mm ±0.1, 0.192 mm2 ±0.01, and 0.01 mm2 ±0.05, respectively). In contrast, the control group exhibited values of 3.62 mm ±0.09, 0.136 mm2 ±0.013, and 0.3 mm2 ±0.06, respectively. Behavioral assays demonstrated impairments in escape response and swimming capacity, accompanied by increased levels of reactive oxygen species (ROS) and lipid peroxidation. In addition, decreased levels of non-protein thiols and reduced cellular viability were noted. Data demonstrated that exposure to CuSO4 at similar concentrations as those permitted in Brazil for Cu adversely altered morphological, biochemical, and behavioral endpoints in zebrafish larvae. This study suggests that the permissible Cu concentrations in Brazil need to be reevaluated, given the potential enhanced adverse health risks of exposure to environmental metal contamination.
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Affiliation(s)
- Maria Vitória Takemura Mariano
- Oxidative Stress and Cell Signaling Research Group. Interdisciplinary Center for Biotechnology Research - CIPBIOTEC, Federal University of Pampa, São Gabriel, Brazil
| | - Luana Paganotto Leandro
- Oxidative Stress and Cell Signaling Research Group. Interdisciplinary Center for Biotechnology Research - CIPBIOTEC, Federal University of Pampa, São Gabriel, Brazil
- Department of Molecular Biology and Biochemistry, Federal University of Santa Maria, Santa Maria, Brazil
| | - Karen Kich Gomes
- Oxidative Stress and Cell Signaling Research Group. Interdisciplinary Center for Biotechnology Research - CIPBIOTEC, Federal University of Pampa, São Gabriel, Brazil
| | - Ana Beatriz Dos Santos
- Oxidative Stress and Cell Signaling Research Group. Interdisciplinary Center for Biotechnology Research - CIPBIOTEC, Federal University of Pampa, São Gabriel, Brazil
| | - Vitor Oliveira de Rosso
- Oxidative Stress and Cell Signaling Research Group. Interdisciplinary Center for Biotechnology Research - CIPBIOTEC, Federal University of Pampa, São Gabriel, Brazil
| | - Alcir Luiz Dafre
- Department of Biochemistry, Center for Biological Sciences, Federal University of Santa Catarina, Santa Catarina, Brazil
| | - Marcelo Farina
- Department of Biochemistry, Center for Biological Sciences, Federal University of Santa Catarina, Santa Catarina, Brazil
| | - Thaís Posser
- Oxidative Stress and Cell Signaling Research Group. Interdisciplinary Center for Biotechnology Research - CIPBIOTEC, Federal University of Pampa, São Gabriel, Brazil
| | - Jeferson Luis Franco
- Oxidative Stress and Cell Signaling Research Group. Interdisciplinary Center for Biotechnology Research - CIPBIOTEC, Federal University of Pampa, São Gabriel, Brazil
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Barreira J, Araújo DF, Rodrigues BQA, Tonhá MS, Mendes RDA, Souto-Oliveira CE, Babinski M, Knoery J, Sanders CJ, Garnier J, Machado W. Copper isotopes as a tool to trace contamination in mangroves from an urbanized watershed. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 340:122785. [PMID: 37871737 DOI: 10.1016/j.envpol.2023.122785] [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: 05/10/2023] [Revised: 08/27/2023] [Accepted: 10/21/2023] [Indexed: 10/25/2023]
Abstract
This study investigates the chronology of copper (Cu) contamination and its stable isotopes within an emblematic Brazilian mangrove impacted by multiple urban and industrial Cu sources, deforestation, and eutrophication. In particular, it tests Cu isotopes as tracers of anthropogenic inputs into an anthropized watershed impacted by multiple sources. To do so, we used multi-isotopic approaches (δ65Cu, δ13C, and δ15N), elemental analyses (Al, Ca, Fe, P, Cu, C, and N), and selective and sequential extractions in a210Pb-dated sediment core. This geochemical "toolbox" allowed identifying two main stages of Cu evolution in the sediment core. In the first stage, before 1965, Cu isotope fingerprints responded to landscape changes, indicating a shift from marine to geogenic dominance due to the remobilization and erosion of terrestrial materials. In the second stage, after 1965, the sediment geochemical profile showed increased Cu total concentrations with a higher bioavailability (as reflected by sequential extraction data) accompanying changes in Cu isotope signatures towards anthropogenic values. The findings evidence that local industrial sources, possibly combined with diffuse urban sources, export Cu into downstream mangroves with a distinguishable isotope signature compared to natural values. This study demonstrates the applicability of Cu isotopes as new environmental forensic tools to trace anthropogenic sources in mangrove sediments. Incorporated into a robust geochemical toolbox that combines inorganic and organic proxies for sedimentary materials, this new tool provides a comprehensive understanding of Cu dynamics in mangrove ecosystems, shedding light on the historical and current sources of Cu.
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Affiliation(s)
- João Barreira
- Geochemistry Program, Chemistry Institute, Fluminense Federal University, Brazil.
| | - Daniel F Araújo
- Ifremer, CCEM Contamination Chimique des Ecosystèmes Marins, F-44000, Nantes, France
| | - Breno Q A Rodrigues
- Geochemistry Program, Chemistry Institute, Fluminense Federal University, Brazil
| | | | | | | | | | - Joël Knoery
- Ifremer, CCEM Contamination Chimique des Ecosystèmes Marins, F-44000, Nantes, France
| | | | | | - Wilson Machado
- Geochemistry Program, Chemistry Institute, Fluminense Federal University, Brazil
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4
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Junqueira TP, Araújo DF, Harrison AL, Sullivan K, Leybourne MI, Vriens B. Contrasting copper concentrations and isotopic compositions in two Great Lakes watersheds. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 904:166360. [PMID: 37595926 DOI: 10.1016/j.scitotenv.2023.166360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 07/18/2023] [Accepted: 08/15/2023] [Indexed: 08/20/2023]
Abstract
Copper (Cu) stable isotopes can elucidate the biogeochemical controls and sources governing Cu dynamics in aquatic environments, but their application in larger rivers and catchments remains comparatively scarce. Here, we use major and trace element hydrogeochemical data, Cu isotope analyses, and mixing modeling, to assess Cu loads and sources in two major river systems in Ontario, Canada. In both the Spanish River and Trent River catchments, aqueous hydrochemical compositions appeared reasonably consistent, but Cu concentrations were more variable spatially. In the Spanish River, waters near (historic) industrial mining activities displayed positive Cu isotope compositions (δ65CuSRM-976 between +0.75 ‰ and +1.01 ‰), but these signatures were gradually attenuated downstream by mixing with natural background waters (δ65Cu -0.65 ‰ to -0.16 ‰). In contrast, Trent River waters exhibited more irregular in-stream Cu isotope patterns (δ65Cu from -0.75 ‰ to +0.21 ‰), beyond the variability in Cu isotope signatures observed for adjacent agricultural soils (δ65Cu between -0.26 ‰ and +0.30 ‰) and lacking spatial correlation, reflective of the more diffuse sourcing and entwined endmember contributions to Cu loads in this catchment. This work shows that metal stable isotopes may improve our understanding of the sources and baseline dynamics of metals, even in large river systems.
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Affiliation(s)
- Tassiane P Junqueira
- Department of Geological Sciences and Geological Engineering, Queen's University, Kingston, Ontario, Canada
| | - Daniel F Araújo
- Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Brest, France
| | - Anna L Harrison
- Geoscience Environment Toulouse, National Scientific Research Centre (CNRS), Toulouse, France
| | - Kaj Sullivan
- Department of Geological Sciences and Geological Engineering, Queen's University, Kingston, Ontario, Canada; Department of Chemistry, Ghent University, Ghent, Belgium
| | - Matthew I Leybourne
- Department of Geological Sciences and Geological Engineering, Queen's University, Kingston, Ontario, Canada; Arthur B. McDonald Canadian Astroparticle Physics Research Institute, Department of Physics, Engineering Physics and Astronomy, Queen's University, Kingston, Ontario, Canada
| | - Bas Vriens
- Department of Geological Sciences and Geological Engineering, Queen's University, Kingston, Ontario, Canada.
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Meite F, Granet M, Imfeld G. Ageing of copper, zinc and synthetic pesticides in particle-size and chemical fractions of agricultural soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 824:153860. [PMID: 35176373 DOI: 10.1016/j.scitotenv.2022.153860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 02/07/2022] [Accepted: 02/09/2022] [Indexed: 06/14/2023]
Abstract
The transformation and mobility of heavy metals and synthetic pesticides in soil depend on ageing, involving their chemical and physical distributions among soil fractions over time. Heavy metals and synthetic pesticides often co-occur in soil, although their ageing is usually evaluated separately and in bulk soil. Here, contrasting vineyard and crop soils were spiked with copper (Cu; 700 mg kg-1) and zinc (Zn; 200 mg kg-1) a and/or synthetic pesticides (5 mg kg-1), i.e., the fungicide metalaxyl (MTY) and herbicide S-metolachlor (SMET), to evaluate within 200 days their distribution among soil physical and chemical fractions. More than 90% of MTY and SMET in soil was released into the water phase, even 200 days after spiking. This emphasizes the potential mobilization of MTY and SMET from the soil following field application. MTY, SMET, Cu and Zn were associated mainly with the silt fraction and to a lesser extent (<30%) with the sand and clay fractions. Overall, the ageing of MTY, SMET, Cu and Zn in agricultural soil was affected mainly by the soil type and sterilization and only to a minor extent by their co-occurrence. Sorption controlled the dissipation of MTY and SMET in soil, while biodegradation contributed to less than 10%. A large fraction (37 ± 2%) of Cu was associated with Fe oxides after 200 days of ageing, while Zn was found (33 ± 2%) in the residual soil fraction. The silt fraction of the nonsterile vineyard soil became enriched in 65Cu over time (Δδ65Cu = 0.25 ± 0.07‰), whereas the clay fraction was depleted in 65Cu (Δδ65Cu = -0.20 ± 0.07‰). Cu isotope fractionation mirrored the Cu distribution in soil chemical fractions, suggesting that Cu stable isotopes may help to follow-up Cu ageing. In contrast, no significant Zn isotope fractionation was observed among soil experiments or over time. Overall, our study emphasizes the variability in ageing of synthetic pesticides and heavy metals co-occurring in agricultural soils and their interplay in physical and chemical fractions of the soil.
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Affiliation(s)
- Fatima Meite
- Université de Strasbourg, CNRS/EOST, ITES UMR 7063, Institut Terre et Environnement de Strasbourg, Strasbourg, France
| | - Mathieu Granet
- Université de Strasbourg, CNRS/EOST, ITES UMR 7063, Institut Terre et Environnement de Strasbourg, Strasbourg, France
| | - Gwenaël Imfeld
- Université de Strasbourg, CNRS/EOST, ITES UMR 7063, Institut Terre et Environnement de Strasbourg, Strasbourg, France.
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Wang RR, Yu HM, Cheng WH, Liu YC, Zhang GL, Li DC, Huang F. Copper migration and isotope fractionation in a typical paddy soil profile of the Yangtze Delta. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 821:153201. [PMID: 35090908 DOI: 10.1016/j.scitotenv.2022.153201] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 01/12/2022] [Accepted: 01/13/2022] [Indexed: 06/14/2023]
Abstract
To decipher Cu migration in paddy soils, which is important for understanding Cu supply in rice cultivation, Cu concentrations and isotope compositions were measured in a paddy soil profile in Suzhou, Eastern China, in the central Yangtze Delta. The results show that the variations in δ65Cu values and Cu concentrations are not coupled along the profile. From top to bottom, the δ65Cu values show small variations (0.07 ± 0.03‰ to 0.25 ± 0.01‰) in the upper layers (Ap-Br1), with a decrease in the subsurface Br2 layer (from 0.16 ± 0.04‰ to -0.19 ± 0.02‰), are almost homogeneous in the transitional Br3-BCrg layers (-0.01 ± 0.01‰ to -0.10 ± 0.02‰), and further decrease to -0.33 ± 0.01‰ in the permanently submerged G1 and G2 layers. Copper concentrations in the Ap layer show some fluctuations (25.8 to 29.0 μg/g), increase in the Br2 and Br3 layers (23.9 μg/g to 31.9 μg/g), and then decrease to 15.1 μg/g in the lower layers. The lack of coupling between δ65Cu values and Cu concentrations may be ascribed to various physicochemical conditions in different layers. In the upper layers, Cu(I) enriched in light isotopes migrates downward with soil solutions under flooded conditions, leaving the soils of the Ap and Br1 layers enriched in heavy Cu isotopes. In the Br2 layer, the readsorption of light Cu isotopes on clay minerals results in decreased δ65Cu values and increased Cu concentrations. In the Br3-BCrg layers, Cu(I) can be oxidized to Cu(II). The homogeneous Cu isotopes in these layers may mainly result from equilibrium adsorption of Cu on clay minerals. The decreased δ65Cu values and Cu concentrations in the G layer are mainly attributed to groundwater transport in this layer. This study represents the Cu isotope variations in a paddy soil profile and the possible mechanism of Cu isotope fractionation.
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Affiliation(s)
- Rui-Rui Wang
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
| | - Hui-Min Yu
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China; CAS Center for Excellence in Comparative Planetology, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Wen-Han Cheng
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China; CAS Center for Excellence in Comparative Planetology, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Yu-Chen Liu
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
| | - Gan-Lin Zhang
- Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - De-Cheng Li
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Fang Huang
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China; CAS Center for Excellence in Comparative Planetology, University of Science and Technology of China, Hefei, Anhui 230026, China
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7
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Blotevogel S, Oliva P, Denaix L, Audry S, Viers J, Schreck E. Stable Cu Isotope Ratios Show Changes in Cu Uptake and Transport Mechanisms in Vitis vinifera Due to High Cu Exposure. FRONTIERS IN PLANT SCIENCE 2022; 12:755944. [PMID: 35095944 PMCID: PMC8790286 DOI: 10.3389/fpls.2021.755944] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 12/03/2021] [Indexed: 06/14/2023]
Abstract
Even though copper (Cu) is an essential plant nutrient, it can become toxic under certain conditions. Toxic effects do not only depend on soil Cu content, but also on environmental and physiological factors, that are not well understood. In this study, the mechanisms of Cu bioavailability and the homeostasis of Vitis vinifera L. cv. Tannat were investigated under controlled conditions, using stable Cu isotope analysis. We measured Cu concentrations and δ65Cu isotope ratios in soils, soil solutions, roots, and leaves of grapevine plants grown on six different vineyard soils, in a 16-week greenhouse experiment. The mobility of Cu in the soil solutions was controlled by the solubility of soil organic matter. No direct relationship between Cu contents in soils or soil solutions and Cu contents in roots could be established, indicating a partly homeostatic control of Cu uptake. Isotope fractionation between soil solutions and roots shifted from light to heavy with increasing Cu exposure, in line with a shift from active to passive uptake. Passive uptake appears to exceed active uptake for soil solution concentrations higher than 270 μg L-1. Isotope fractionation between roots and leaves was increasingly negative with increasing root Cu contents, even though the leaf Cu contents did not differ significantly. Our results suggest that Cu isotope analysis is a sensitive tool to monitor differences in Cu uptake and translocation pathways even before differences in tissue contents can be observed.
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Affiliation(s)
- Simon Blotevogel
- Géosciences Environnement Toulouse (GET), Université Paul-Sabatier Toulouse III, CNRS, IRD, Toulouse, France
| | - Priscia Oliva
- Géosciences Environnement Toulouse (GET), Université Paul-Sabatier Toulouse III, CNRS, IRD, Toulouse, France
| | - Laurence Denaix
- Interactions Sol Plante Atmosphère (ISPA), Institut National de Recherche Pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Bordeaux Sciences Agro, Villenave d’Ornon, France
| | - Stéphane Audry
- Géosciences Environnement Toulouse (GET), Université Paul-Sabatier Toulouse III, CNRS, IRD, Toulouse, France
| | - Jerome Viers
- Géosciences Environnement Toulouse (GET), Université Paul-Sabatier Toulouse III, CNRS, IRD, Toulouse, France
| | - Eva Schreck
- Géosciences Environnement Toulouse (GET), Université Paul-Sabatier Toulouse III, CNRS, IRD, Toulouse, France
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Abstract
Abstract
Background
Particles from non-exhaust emissions derived from traffic activities are a dominant cause of toxic metal pollution in urban environments. Recently, studies applying multiple isotope values using the Iso-source and positive matrix factorization (PMF) models have begun to be used as useful tools to evaluate the contribution of each pollution source in urban environments. However, data on the metal concentrations and isotopic compositions of each potential source are lacking. Therefore, this study presents data on toxic metals and Cu, Zn, and Pb isotopic compositions in tires, which are one of the important non-exhaust emission sources.
Findings
Among the toxic metals, Zn had the highest concentration in all tire samples, and the mean concentrations were in the order of Zn > Cu > Pb > Sn > Sb > Ni > Cr > As > Cd. Ni, Zn, Sn, and Sb had higher concentrations in domestic tires (South Korea), and the Cu, Cd, and Pb concentrations were relatively higher in imported tires. The mean values of δ65CuAE647, δ66ZnIRMM3702, and 206Pb/207Pb ranged from − 1.04 to − 0.22‰, − 0.09 to − 0.03‰, and 1.1242 to 1.1747, respectively. The concentrations and isotopic compositions of Cu and Pb in the tires showed large differences depending on the product and manufacturer. However, the differences in Zn concentration and δ66ZnIRMM3702 values were very small compared with those of Cu and Pb. The relationships of the Zn concentration and isotopic composition showed that domestic tires are clearly distinguishable from imported tires. Bi-plots of Cu, Zn, and Pb isotopic compositions indicated that tires can be clearly discriminated from natural-origin and other non-exhaust traffic emission sources.
Conclusions
The multi-isotope signatures of Cu, Zn, and Pb exhibited different isotopic values for other non-exhaust traffic emission sources than for tires, and application of the multi-isotope technique may be a powerful method for distinguishing and managing non-exhaust sources of metal contamination in urban environments.
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Araújo DF, Knoery J, Briant N, Ponzevera E, Chouvelon T, Auby I, Yepez S, Bruzac S, Sireau T, Pellouin-Grouhel A, Akcha F. Metal stable isotopes in transplanted oysters as a new tool for monitoring anthropogenic metal bioaccumulation in marine environments: The case for copper. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 290:118012. [PMID: 34482248 DOI: 10.1016/j.envpol.2021.118012] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 07/29/2021] [Accepted: 08/18/2021] [Indexed: 06/13/2023]
Abstract
Metal release into the environment from anthropogenic activities may endanger ecosystems and human health. However, identifying and quantifying anthropogenic metal bioaccumulation in organisms remain a challenging task. In this work, we assess Cu isotopes in Pacific oysters (C. gigas) as a new tool for monitoring anthropogenic Cu bioaccumulation into marine environments. Arcachon Bay was taken as a natural laboratory due to its increasing contamination by Cu, and its relevance as a prominent shellfish production area. Here, we transplanted 18-month old oysters reared in an oceanic neighbor area into two Arcachon Bay mariculture sites under different exposure levels to continental Cu inputs. At the end of their 12-month long transplantation period, the oysters' Cu body burdens had increased, and was shifted toward more positive δ65Cu values. The gradient of Cu isotope compositions observed for oysters sampling stations was consistent with relative geographic distance and exposure intensities to unknown continental Cu sources. A binary isotope mixing model based on experimental data allowed to estimate the Cu continental fraction bioaccumulated in the transplanted oysters. The positive δ65Cu values and high bioaccumulated levels of Cu in transplanted oysters support that continental emissions are dominantly anthropogenic. However, identifying specific pollutant coastal source remained unelucidated mostly due to their broader and overlapping isotope signatures and potential post-depositional Cu isotope fractionation processes. Further investigations on isotope fractionation of Cu-based compounds in an aqueous medium may improve Cu source discrimination. Thus, using Cu as an example, this work combines for the first time a well-known caged bivalve approach with metal stable isotope techniques for monitoring and quantifying the bioaccumulation of anthropogenic metal into marine environments. Also, it states the main challenges to pinpoint specific coastal anthropogenic sources utilizing this approach and provides the perspectives for further studies to overcome them.
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Affiliation(s)
- Daniel F Araújo
- Ifremer, Unité Biogéochimie et Écotoxicologie, Laboratoire de Biogéochimie des Contaminants Métalliques (BE/LBCM), Rue de L'Ile D'Yeu, BP 21105, 44311, Nantes Cedex 03, France.
| | - Joël Knoery
- Ifremer, Unité Biogéochimie et Écotoxicologie, Laboratoire de Biogéochimie des Contaminants Métalliques (BE/LBCM), Rue de L'Ile D'Yeu, BP 21105, 44311, Nantes Cedex 03, France
| | - Nicolas Briant
- Ifremer, Unité Biogéochimie et Écotoxicologie, Laboratoire de Biogéochimie des Contaminants Métalliques (BE/LBCM), Rue de L'Ile D'Yeu, BP 21105, 44311, Nantes Cedex 03, France
| | - Emmanuel Ponzevera
- Ifremer, Unité Biogéochimie et Écotoxicologie (BE), Rue de L'Ile D'Yeu, BP 21105, 44311, Nantes Cedex 03, France
| | - Tiphaine Chouvelon
- Ifremer, Unité Biogéochimie et Écotoxicologie, Laboratoire de Biogéochimie des Contaminants Métalliques (BE/LBCM), Rue de L'Ile D'Yeu, BP 21105, 44311, Nantes Cedex 03, France; Observatoire Pelagis, UMS 3462 La Rochelle Université-CNRS, 5 Allée de L'Océan, 17000, La Rochelle, France
| | - Isabelle Auby
- Ifremer, Unité Littoral, Laboratoire Environnement Ressources D'Arcachon (Littoral/LERAR), Quai Du Commandant Silhouette, 33120, Arcachon, France
| | - Santiago Yepez
- Department of Forest Management and Environment, Faculty of Forestry, University of Concepcion, Calle Victoria, 500 Concepción, Bio-Bio, Chile
| | - Sandrine Bruzac
- Ifremer, Unité Biogéochimie et Écotoxicologie, Laboratoire de Biogéochimie des Contaminants Métalliques (BE/LBCM), Rue de L'Ile D'Yeu, BP 21105, 44311, Nantes Cedex 03, France
| | - Teddy Sireau
- Ifremer, Unité Biogéochimie et Écotoxicologie, Laboratoire de Biogéochimie des Contaminants Métalliques (BE/LBCM), Rue de L'Ile D'Yeu, BP 21105, 44311, Nantes Cedex 03, France
| | - Anne Pellouin-Grouhel
- Ifremer, Unité Biogéochimie et Écotoxicologie (BE), Réseau D'Observation de La Contamination Chimique Du Littoral Rue de L'Ile D'Yeu, BP 21105, 44311, Nantes Cedex 03, France
| | - Farida Akcha
- Ifremer, Unité Biogéochimie et Écotoxicologie, Laboratoire D'Écotoxicologie (BE/LEX), Rue de L'Ile D'Yeu, BP 21105, 44311, Nantes Cedex 03, France
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10
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Johnson MG, Luxton TP, Rygiewicz PT, Reichman JR, Bollman MA, King GA, Storm MJ, Nash MS, Andersen CP. Transformation and release of micronized Cu used as a wood preservative in treated wood in wetland soil. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 287:117189. [PMID: 34023660 PMCID: PMC9299944 DOI: 10.1016/j.envpol.2021.117189] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 04/08/2021] [Accepted: 04/16/2021] [Indexed: 06/12/2023]
Abstract
Micronized Cu (μ-Cu) is used as a wood preservative, replacing toxic chromated copper arsenate (CCA). Micronized Cu is malachite [Cu2CO3(OH)2] that has been milled to micron/submicron particles, with many particle diameters less than 100 nm, mixed with biocides and then used to treat wood. In addition to concerns about the fate of the Cu from μ-Cu, there is interest in the fate of the nano-Cu (n-Cu) constituents. We examined movement of Cu from μ-Cu-treated wood after placing treated-wood stakes into model wetland ecosystems. Release of Cu into surface and subsurface water was monitored. Surface water Cu reached maximum levels 3 days after stake installation and remained elevated if the systems remained inundated. Subsurface water Cu levels were 10% of surface water levels at day 3 and increased gradually thereafter. Sequential filtering indicated that a large portion of the Cu in solution was associating with soluble organics, but there was no evidence for n-Cu in solution. After 4 months, Cu in thin-sections of treated wood and adjacent soil were characterized with micro X-ray absorption fine structure spectroscopy (μ-XAFS). Localization and speciation of Cu in the wood and adjacent soil using μ-XAFS clearly indicated that Cu concentrations decreased over time in the treated wood and increased in the adjacent soil. However, n-Cu from the treated wood was not found in the adjacent soil or plant roots. The results of this study indicate that Cu in the μ-Cu-treated wood dissolves and migrates into adjacent soil and waters primarily in ionic form (i.e., Cu2+) and not as nano-sized Cu particles. A reduced form of Cu (Cu2S) was identified in deep soil proximal to the treated wood, indicating strong reducing conditions. The formation of the insoluble Cu2S effectively removes some portion of dissolved Cu from solution, reducing movement of Cu2+ to the water column and diminishing exposure.
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Affiliation(s)
- M G Johnson
- EPA, ORD, Center for Public Health and Environmental Assessment, Corvallis, OR, USA.
| | - T P Luxton
- EPA, ORD, Center for Environmental Solutions and Emergency Response, Cincinnati, OH, USA
| | - P T Rygiewicz
- EPA, ORD, Center for Public Health and Environmental Assessment, Corvallis, OR, USA
| | - J R Reichman
- EPA, ORD, Center for Public Health and Environmental Assessment, Corvallis, OR, USA
| | - M A Bollman
- EPA, ORD, Center for Public Health and Environmental Assessment, Corvallis, OR, USA
| | | | | | - M S Nash
- EPA, ORD, Center for Public Health and Environmental Assessment, Corvallis, OR, USA
| | - C P Andersen
- EPA, ORD, Center for Public Health and Environmental Assessment, Corvallis, OR, USA
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11
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Droz B, Payraudeau S, Rodríguez Martín JA, Tóth G, Panagos P, Montanarella L, Borrelli P, Imfeld G. Copper Content and Export in European Vineyard Soils Influenced by Climate and Soil Properties. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:7327-7334. [PMID: 34009978 DOI: 10.1021/acs.est.0c02093] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Copper-based fungicides (Cuf) are used in European (EU) vineyards to prevent fungal diseases. Soil physicochemical properties locally govern the variation of the total copper content (Cut) in EU vineyards. However, variables controlling Cut distribution at a larger scale are poorly known. Here, machine learning techniques were used to identify governing variables and to predict the Cut distribution in EU vineyards. Precipitation, aridity and soil organic carbon are key variables explaining together 45% of Cut distribution across EU vineyards. This underlines the effect of both climate and soil properties on Cut distribution. The average net export of Cu at the EU scale is 0.29 kg Cu ha-1, which is 2 orders of magnitude less than the net accumulation of Cu (24.8 kg Cu ha-1). Four scenarios of Cuf application were compared. The current EU regulation with a maximum of 4 kg Cu ha-1 year-1 may increase by 2% of the EU vineyard area, exceeding the predicted no-effect concentration (PNEC) in soil in the next 100 years. Overall, our results highlight the vineyard areas requiring specific remediation measures and strategies of Cuf use to manage a trade-off between pest control and soil and water contamination.
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Affiliation(s)
- Boris Droz
- Institut Terre et Environnement de Strasbourg, UMR 7063, Université de Strasbourg, ENGEES, CNRS, 5 rue Descartes, Strasbourg F-67084, France
| | - Sylvain Payraudeau
- Institut Terre et Environnement de Strasbourg, UMR 7063, Université de Strasbourg, ENGEES, CNRS, 5 rue Descartes, Strasbourg F-67084, France
| | - José Antonio Rodríguez Martín
- Department of the Environment, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaría (INIA), Carretera de la Corunã 7.5, 28040 Madrid, Spain
| | - Gergely Tóth
- Institute of Advanced Studies, Chernel Street 14, 9730 Kőszeg, Hungary
| | - Panos Panagos
- Institute for Environment and Sustainability, European Commission, Joint Research Centre (JRC), Via E. Fermi 2749, 21027 Ispra, Italy
| | - Luca Montanarella
- Institute for Environment and Sustainability, European Commission, Joint Research Centre (JRC), Via E. Fermi 2749, 21027 Ispra, Italy
| | - Pasquale Borrelli
- Department of Earth and Environmental Sciences, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy
- Department of Biological Environment, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Gwenaël Imfeld
- Institut Terre et Environnement de Strasbourg, UMR 7063, Université de Strasbourg, ENGEES, CNRS, 5 rue Descartes, Strasbourg F-67084, France
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12
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The Role of Ponds in Pesticide Dissipation at the Agricultural Catchment Scale: A Critical Review. WATER 2021. [DOI: 10.3390/w13091202] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Ponds in agricultural areas are ubiquitous water retention systems acting as reactive biogeochemical hotspots controlling pesticide dissipation and transfer at the catchment scale. Several issues need to be addressed in order to understand, follow-up and predict the role of ponds in limiting pesticide transfer at the catchment scale. In this review, we present a critical overview of functional processes underpinning pesticide dissipation in ponds. We highlight the need to distinguish degradative and non-degradative processes and to understand the role of the sediment-water interface in pesticide dissipation. Yet it is not well-established how pesticide dissipation in ponds governs the pesticide transfer at the catchment scale under varying hydro-climatic conditions and agricultural operation practices. To illustrate the multi-scale and dynamic aspects of this issue, we sketch a modelling framework integrating the role of ponds at the catchment scale. Such an integrated framework can improve the spatial prediction of pesticide transfer and risk assessment across the catchment-ponds-river continuum to facilitate management rules and operations.
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13
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Araújo DF, Ponzevera E, Briant N, Knoery J, Bruzac S, Sireau T, Pellouin-Grouhel A, Brach-Papa C. Differences in Copper Isotope Fractionation Between Mussels (Regulators) and Oysters (Hyperaccumulators): Insights from a Ten-Year Biomonitoring Study. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:324-330. [PMID: 33306351 DOI: 10.1021/acs.est.0c04691] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Copper (Cu) isotope compositions in bivalve mollusks used in marine-monitoring networks is a promising tool to monitor anthropogenic Cu contamination in coastal and marine ecosystems. To test this new biomonitoring tool, we investigated Cu isotope variations of two bivalves-the oyster Crassostrea gigas and the mussel Mytilus edulis-over 10 years (2009-2018) in a French coastal site contaminated by diffuse Cu anthropogenic sources. Each species displayed temporal concentration profiles consistent with their bioaccumulation mechanisms, that is, the Cu-regulating mussels with almost constant Cu concentrations and the Cu-hyperaccumulating oysters with variable concentrations that track Cu bioavailability trends at the sampling site. The temporal isotope profiles were analogous for both bivalve species, and an overall shift toward positive δ65Cu values with the increase of Cu bioavailabilities was associated with anthropogenic Cu inputs. Interestingly, mussels showed wider amplitudes in the isotope variations than oysters, suggesting that each species incorporates Cu isotopes in their tissues at different rates, depending on their bioaccumulation mechanisms and physiological features. This study is the first to demonstrate the potential of Cu isotopes in bivalves to infer Cu bioavailability changes related to anthropogenic inputs of this metal into the marine environment.
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Affiliation(s)
- Daniel F Araújo
- Laboratoire de Biogéochimie des Contaminants Métalliques, Ifremer, Centre Atlantique, Nantes Cedex 3 F44311, France
| | - Emmanuel Ponzevera
- Laboratoire de Biogéochimie des Contaminants Métalliques, Ifremer, Centre Atlantique, Nantes Cedex 3 F44311, France
| | - Nicolas Briant
- Laboratoire de Biogéochimie des Contaminants Métalliques, Ifremer, Centre Atlantique, Nantes Cedex 3 F44311, France
| | - Joël Knoery
- Laboratoire de Biogéochimie des Contaminants Métalliques, Ifremer, Centre Atlantique, Nantes Cedex 3 F44311, France
| | - Sandrine Bruzac
- Laboratoire de Biogéochimie des Contaminants Métalliques, Ifremer, Centre Atlantique, Nantes Cedex 3 F44311, France
| | - Teddy Sireau
- Laboratoire de Biogéochimie des Contaminants Métalliques, Ifremer, Centre Atlantique, Nantes Cedex 3 F44311, France
| | - Anne Pellouin-Grouhel
- Réseau d'Observation de la Contamination Chimique du littoral-ROCCH, Ifremer, Centre Atlantique, Nantes Cedex 3 F44311, France
| | - Christophe Brach-Papa
- Laboratoire Environnement Ressources Provence-Azur-Corse, Ifremer, Centre Méditerranée, Zone Portuaire de Brégaillon, La Seyne-sur-Mer Cedex CS20 330 83507, France
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14
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Imfeld G, Meite F, Wiegert C, Guyot B, Masbou J, Payraudeau S. Do rainfall characteristics affect the export of copper, zinc and synthetic pesticides in surface runoff from headwater catchments? THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 741:140437. [PMID: 32887001 DOI: 10.1016/j.scitotenv.2020.140437] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 06/17/2020] [Accepted: 06/20/2020] [Indexed: 06/11/2023]
Abstract
Rainfall and runoff characteristics may influence off-site export of pesticides into downstream aquatic ecosystems. However, the relationship between rainfall characteristics and pesticide export from small headwater catchments remains elusive due to confounding factors including the application dose and timing and the variation of pesticide stocks in soil. Here we examined the impact of rainfall characteristics on the export of copper (Cu), zinc (Zn) and 12 legacy and currently used synthetic pesticides in surface runoff from a headwater vineyard catchment. Cluster analysis of rainfall intensity, depth and duration of 78 events revealed four distinct rainfall categories, i.e., Small, Long, Moderate and Intense (p < 0.001). Event mean concentrations of pesticides did not differ among rainfall categories (p > 0.05). In contrast, event loads of both dissolved and solid-bound Cu and Zn significantly differed among rainfall categories (p < 0.001). Rainfall depth and intensity significantly correlated with both Cu and Zn loads in runoff (ρs = 0.33 to 0.92, p < 0.002), and might be the main drivers of Cu and Zn export at the catchment scale. In contrast, rainfall depth, intensity or duration did not influence the loads of synthetic pesticides in runoff, even when weekly variations of pesticide stocks in the soil were accounted for. However, intense rainfall-runoff events, that can fragment soil, may control the export of persistent and hydrophobic legacy pesticides stocks in the soil, such as simazine and tetraconazole. Our results show that rainfall characteristics controlled the off-site export of Cu, Zn and legacy synthetic pesticides in a small headwater catchment, whereas the application timing drove the export of currently used synthetic pesticides in runoff. We anticipate our results to be a preliminary step to forecast the influence of regional rainfall patterns on the export of both metallic and synthetic pesticides by surface runoff from small agricultural headwater catchments.
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Affiliation(s)
- Gwenaël Imfeld
- Laboratory of Hydrology and Geochemistry of Strasbourg (LHyGeS), UMR 7517, Université de Strasbourg/ENGEES, CNRS, 1 Rue Blessig, 67084 Strasbourg Cedex, France.
| | - Fatima Meite
- Laboratory of Hydrology and Geochemistry of Strasbourg (LHyGeS), UMR 7517, Université de Strasbourg/ENGEES, CNRS, 1 Rue Blessig, 67084 Strasbourg Cedex, France
| | - Charline Wiegert
- Laboratory of Hydrology and Geochemistry of Strasbourg (LHyGeS), UMR 7517, Université de Strasbourg/ENGEES, CNRS, 1 Rue Blessig, 67084 Strasbourg Cedex, France
| | - Benoît Guyot
- Laboratory of Hydrology and Geochemistry of Strasbourg (LHyGeS), UMR 7517, Université de Strasbourg/ENGEES, CNRS, 1 Rue Blessig, 67084 Strasbourg Cedex, France
| | - Jérémy Masbou
- Laboratory of Hydrology and Geochemistry of Strasbourg (LHyGeS), UMR 7517, Université de Strasbourg/ENGEES, CNRS, 1 Rue Blessig, 67084 Strasbourg Cedex, France
| | - Sylvain Payraudeau
- Laboratory of Hydrology and Geochemistry of Strasbourg (LHyGeS), UMR 7517, Université de Strasbourg/ENGEES, CNRS, 1 Rue Blessig, 67084 Strasbourg Cedex, France
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15
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Coutaud M, Paule A, Méheut M, Viers J, Rols JL, Pokrovsky OS. Elemental and Isotopic Variations of Copper and Zinc Associated with the Diel Activity of Phototrophic Biofilm. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:6741-6750. [PMID: 32352767 DOI: 10.1021/acs.est.0c00733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The response in metal concentrations and isotopic composition to variations in photosynthetic activity of aquatic micro-organisms is crucially important for understanding the environmental controls on metal fluxes and isotope excursions. Here we studied the impacts of two successive diel cycles on physicochemical parameters, Cu and Zn concentrations, and isotopic composition in solution in the presence of mature phototrophic biofilm in a rotating annular bioreactor. The diel cycles induced fluctuations in temperature, pH, and dissolved oxygen concentration following the variation in the photosynthesis activity of the biofilm. Diel variations in metal concentrations were primarily related to the pH variation, with an increase in metal concentration in solution related to a pH decrease. For both metals, δ(66Zn) and δ(65Cu) in solution exhibited complex but reproducible diel cycles. Diel variations in photosynthetic activity led to alternatively positive and negative isotope fractionation, producing the sorption of light Zn (Δ(66Znsorbed-solution) = -0.1 ± 0.06‰) and heavy Cu isotopes (Δ(65Cusorbed-solution) = +0.17 ± 0.06‰) during the day at high pH and the excretion of lighter Zn isotopes (-0.4‰ < Δ(66Znexcreted-biofilm) < +0.14‰) and heavy Cu isotopes (Δ(65Cuexcreted-biofilm) = +0.7 ± 0.3‰) during the night at lower pH. We interpreted Zn and Cu diel cycles as a combination of a desorption of exopolymeric substance-metal complexes and a small active efflux during the night with adsorption and incorporation via an active uptake during the day. The hysteresis of metal concentration in solution over the diel cycle suggested the more important role of uptake compared to desorption and efflux from the biofilm. The phototrophic biofilm presents a non-negligible highly labile metal pool with important potential for contrasting isotopic fractionation at the diel scale.
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Affiliation(s)
- Margot Coutaud
- Geosciences and Environment Toulouse (GET) UMR 5563 CNRS, University of Toulouse, 14 Avenue Edouard Belin, 31400 Toulouse, France
- INP, UPS, CNRS EcoLab (Laboratoire Ecologie Fonctionnelle et Environnement)Université de Toulouse; 118 Route de Narbonne, 31062 Toulouse, France
| | - Armelle Paule
- INP, UPS, CNRS EcoLab (Laboratoire Ecologie Fonctionnelle et Environnement)Université de Toulouse; 118 Route de Narbonne, 31062 Toulouse, France
| | - Merlin Méheut
- Geosciences and Environment Toulouse (GET) UMR 5563 CNRS, University of Toulouse, 14 Avenue Edouard Belin, 31400 Toulouse, France
| | - Jérôme Viers
- Geosciences and Environment Toulouse (GET) UMR 5563 CNRS, University of Toulouse, 14 Avenue Edouard Belin, 31400 Toulouse, France
| | - Jean-Luc Rols
- INP, UPS, CNRS EcoLab (Laboratoire Ecologie Fonctionnelle et Environnement)Université de Toulouse; 118 Route de Narbonne, 31062 Toulouse, France
| | - Oleg S Pokrovsky
- Geosciences and Environment Toulouse (GET) UMR 5563 CNRS, University of Toulouse, 14 Avenue Edouard Belin, 31400 Toulouse, France
- BIO-GEO-CLIM Laboratory, Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia
- N. Laverov Federal Center for Integrated Arctic Research, Russian Academy of Science, 23 Naberezhnaya Severnoy Dviny, Arkhangelsk 163000, Russia
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16
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Araújo DF, Ponzevera E, Briant N, Knoery J, Sireau T, Mojtahid M, Metzger E, Brach-Papa C. Assessment of the metal contamination evolution in the Loire estuary using Cu and Zn stable isotopes and geochemical data in sediments. MARINE POLLUTION BULLETIN 2019; 143:12-23. [PMID: 31789146 DOI: 10.1016/j.marpolbul.2019.04.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 04/08/2019] [Accepted: 04/12/2019] [Indexed: 06/10/2023]
Abstract
In this work, a multi-elemental approach combining Cu and Zn stable isotopes is used to assess the metal contamination evolution in the Loire estuary bulk sediments. Elemental geochemical data indicate an increase of metal concentrations from the beginning of the industrial period peaking in the 1990s, followed by an attenuation of metal contamination inputs to the estuary. Zinc isotope compositions suggest a binary mixing process between Zn derived from terrigenous material and multi-urban anthropogenic sources. Copper isotope systematics indicate a single natural dominant source represented by weathered silicate particles from soils and rocks. This work demonstrates the applicability of Zn isotopes to identify anthropogenic Zn sources in coastal systems, even under a low to moderate degree of contamination. Further studies are required to constrain Cu sources and to elucidate possible effects of grain-size and mineralogy in the Cu isotope composition of sediment in the Loire estuary.
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Affiliation(s)
- Daniel F Araújo
- Laboratoire de Biogéochimie des Contaminants Métalliques, Ifremer, Centre Atlantique, F44311 Nantes Cedex 3, France.
| | - Emmanuel Ponzevera
- Laboratoire de Biogéochimie des Contaminants Métalliques, Ifremer, Centre Atlantique, F44311 Nantes Cedex 3, France
| | - Nicolas Briant
- Laboratoire de Biogéochimie des Contaminants Métalliques, Ifremer, Centre Atlantique, F44311 Nantes Cedex 3, France
| | - Joël Knoery
- Laboratoire de Biogéochimie des Contaminants Métalliques, Ifremer, Centre Atlantique, F44311 Nantes Cedex 3, France
| | - Teddy Sireau
- Laboratoire de Biogéochimie des Contaminants Métalliques, Ifremer, Centre Atlantique, F44311 Nantes Cedex 3, France
| | - Meryem Mojtahid
- UMR-CNRS 6112, LPG-BIAF, University of Angers, University of Nantes, UFR Sciences, 2 bd Lavoisier, 49045 Angers Cedex 01, France
| | - Edouard Metzger
- UMR-CNRS 6112, LPG-BIAF, University of Angers, University of Nantes, UFR Sciences, 2 bd Lavoisier, 49045 Angers Cedex 01, France
| | - Christophe Brach-Papa
- Laboratoire de Biogéochimie des Contaminants Métalliques, Ifremer, Centre Atlantique, F44311 Nantes Cedex 3, France; Laboratoire Environnement Ressources Provence Azur Corse, Ifremer, Zone portuaire de Brégaillon, CS 20330, 83507 La Seyne sur Mer Cedex, France
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17
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Santos SW, Cachot J, Gourves PY, Clérandeau C, Morin B, Gonzalez P. Sub-lethal effects of waterborne copper in early developmental stages of rainbow trout (Oncorhynchus mykiss). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 170:778-788. [PMID: 30593991 DOI: 10.1016/j.ecoenv.2018.12.045] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 12/12/2018] [Accepted: 12/16/2018] [Indexed: 06/09/2023]
Abstract
The aim of this work was to study the impact of copper during a sub-chronic exposure to environmental concentrations in the early life stages of rainbow trout (Oncorhynchus mykiss). Eyed-stage embryos of rainbow trout, at 265 °D, were exposed in semi-static conditions to sub-lethal concentrations of CuSO4 up to the larval stage (528 °D) under laboratory-controlled conditions. During 3 weeks, they were exposed to the environmentally-realistic concentration of 2 µg/L Cu and to a 10-fold higher concentration, 20 µg/L Cu. Several biological (survival, hatching success, malformation, growth) and behavioral (swimming activity) and molecular endpoints (genotoxicity and gene transcription) were studied. Exposure to 20 µg/L Cu had an inhibitory effect on hatching and increased half-hatched embryos (25%). At the end of the exposure, no significant differences were observed in growth of the larvae exposed to the highest Cu concentration. However, larvae exposed to 2 µg/L Cu exhibited increased growth in comparison with non-exposed larvae. The percentage of malformed larvae was significantly higher for both copper conditions, with skeletal malformations being the most observed. Expression of several genes was evaluated in whole larvae using quantitative real-time PCR. Genes involved in detoxification (gst, mt1 and mt2) and in cell cycle arrest (p53) were significantly repressed in both copper conditions when compared to control. In addition, potential genotoxic effects on larvae were investigated by the comet assay on blood cells, but this test did not demonstrate any significant DNA damage on larvae exposed to copper. This study confirms the adverse effects of copper on early life stages of rainbow trout even at the lowest environmentally relevant tested concentration.
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Affiliation(s)
- Shannon Weeks Santos
- UMR CNRS 5805 EPOC, University of Bordeaux, Avenue des Facultés, 33405 Talence Cedex, France
| | - Jérôme Cachot
- UMR CNRS 5805 EPOC, University of Bordeaux, Avenue des Facultés, 33405 Talence Cedex, France
| | - Pierre-Yves Gourves
- UMR CNRS 5805 EPOC, University of Bordeaux, Place du Dr B. Peyneau, 33120 Arcachon, France
| | - Christelle Clérandeau
- UMR CNRS 5805 EPOC, University of Bordeaux, Avenue des Facultés, 33405 Talence Cedex, France
| | - Bénédicte Morin
- UMR CNRS 5805 EPOC, University of Bordeaux, Avenue des Facultés, 33405 Talence Cedex, France
| | - Patrice Gonzalez
- UMR CNRS 5805 EPOC, University of Bordeaux, Place du Dr B. Peyneau, 33120 Arcachon, France.
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18
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Meite F, Alvarez-Zaldívar P, Crochet A, Wiegert C, Payraudeau S, Imfeld G. Impact of rainfall patterns and frequency on the export of pesticides and heavy-metals from agricultural soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 616-617:500-509. [PMID: 29127804 DOI: 10.1016/j.scitotenv.2017.10.297] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 10/26/2017] [Accepted: 10/29/2017] [Indexed: 06/07/2023]
Abstract
The combined influence of soil characteristics, pollutant aging and rainfall patterns on the export of pollutants from topsoils is poorly understood. We used laboratory experiments and parsimonious modeling to evaluate the impact of rainfall characteristics on the ponding and the leaching of a pollutant mixture from topsoils. The mixture included the fungicide metalaxyl, the herbicide S-metolachlor, as well as copper (Cu) and zinc (Zn). Four rainfall patterns, which differed in their durations and intensities, were applied twice successively with a 7days interval on each soil type. To evaluate the influence of soil type and aging, experiments included crop and vineyard soils and two stages of pollutant aging (0 and 10days). The global export of pollutants was significantly controlled by the rainfall duration and frequency (P<0.01). During the first rainfall event, the longest and most intense rainfall pattern yielded the largest export of metalaxyl (44.5±21.5% of the initial mass spiked in the soils), S-metolachlor (8.1±3.1%) and Cu (3.1±0.3%). Soil compaction caused by the first rainfall reduced in the second rainfall the leaching of remaining metalaxyl, S-metolachlor, Cu and Zn by 2.4-, 2.9-, 30- and 50-fold, respectively. In contrast, soil characteristics and aging had less influence on pollutant mass export. The soil type significantly influenced the leaching of Zn, while short-term aging impacted Cu leaching. Our results suggest that rainfall characteristics predominantly control export patterns of metalaxyl and S-metolachlor, in particular when the aging period is short. We anticipate our study to be a starting point for more systematic evaluation of the dissolved pollutant ponding/leaching partitioning and the export of pollutant mixtures from different soil types in relation to rainfall patterns.
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Affiliation(s)
- Fatima Meite
- Laboratory of Hydrology and Geochemistry of Strasbourg (LHyGeS UMR 7517), University of Strasbourg, CNRS, ENGEES, 1 Rue Blessig, 67084 Strasbourg Cedex, France
| | - Pablo Alvarez-Zaldívar
- Laboratory of Hydrology and Geochemistry of Strasbourg (LHyGeS UMR 7517), University of Strasbourg, CNRS, ENGEES, 1 Rue Blessig, 67084 Strasbourg Cedex, France
| | - Alexandre Crochet
- Laboratory of Hydrology and Geochemistry of Strasbourg (LHyGeS UMR 7517), University of Strasbourg, CNRS, ENGEES, 1 Rue Blessig, 67084 Strasbourg Cedex, France
| | - Charline Wiegert
- Laboratory of Hydrology and Geochemistry of Strasbourg (LHyGeS UMR 7517), University of Strasbourg, CNRS, ENGEES, 1 Rue Blessig, 67084 Strasbourg Cedex, France
| | - Sylvain Payraudeau
- Laboratory of Hydrology and Geochemistry of Strasbourg (LHyGeS UMR 7517), University of Strasbourg, CNRS, ENGEES, 1 Rue Blessig, 67084 Strasbourg Cedex, France
| | - Gwenaël Imfeld
- Laboratory of Hydrology and Geochemistry of Strasbourg (LHyGeS UMR 7517), University of Strasbourg, CNRS, ENGEES, 1 Rue Blessig, 67084 Strasbourg Cedex, France.
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19
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Babcsányi I, Meite F, Imfeld G. Biogeochemical gradients and microbial communities in Winogradsky columns established with polluted wetland sediments. FEMS Microbiol Ecol 2017; 93:4004837. [PMID: 28873942 DOI: 10.1093/femsec/fix089] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 07/05/2017] [Indexed: 11/12/2022] Open
Abstract
A Winogradsky column is a miniature ecosystem established with enriched sediments that can be used to study the relationship between biogeochemical gradients, microbial diversity and pollutant transformation. Biogeochemical processes and microbial communities changed with time and depth in Winogradsky columns incubated with heavy-metal-polluted wetland sediments for 520 days. 16S rRNA surveys were complemented by geochemical analyses, including heavy metal proportioning, to evaluate gradients in the mostly anoxic columns. Oxygen was depleted below the water-sediment interface (WSI), while NH4+, Fe2+, S2- and acetate increased by one order of magnitude at the bottom. Microbial niche differentiation occurred mainly by depth and from the light-exposed surface to the interior of the columns. Chemical gradients resulting from nutrient uptake by algae, and from iron and sulphate reduction mainly drove diversification. Heavy-metal proportioning did not significantly influence microbial diversity as Cu and Zn were immobilised at all depths. Proteobacteria were abundant in the top water and the WSI layers, whereas Firmicutes and Bacteroida dominated down-core. Together with low diversity and richness of communities at the WSI and column bottom, changes in the bacterial community coincided with algal-derived carbon sources and cellulose fermentation, respectively. We expect this study to be the starting point for the use Winogradsky columns to study microbial and geochemical dynamics in polluted sediments.
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Affiliation(s)
- Izabella Babcsányi
- Laboratory of Hydrology and Geochemistry of Strasbourg (LHyGeS), University of Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France
| | - Fatima Meite
- Laboratory of Hydrology and Geochemistry of Strasbourg (LHyGeS), University of Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France
| | - Gwenaël Imfeld
- Laboratory of Hydrology and Geochemistry of Strasbourg (LHyGeS), University of Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France
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Cu Isotopic Composition in Surface Environments and in Biological Systems: A Critical Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017; 14:ijerph14050538. [PMID: 28524094 PMCID: PMC5451988 DOI: 10.3390/ijerph14050538] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 05/11/2017] [Accepted: 05/11/2017] [Indexed: 01/04/2023]
Abstract
Copper (Cu) is a transition metal and an essential micronutrient for organisms, but also one of the most widespread toxic inorganic contaminants at very high content. The research on Cu isotopes has grown rapidly in the last decade. Hitherto, a large number of studies have been published on the theoretical fractionation mechanisms, experimental data and natural variations of Cu isotopes in variable environments and ecosystems. These studies reported a large variation of δ65Cu (-16.49 to +20.04‰) in terrestrial samples and showed that Cu isotopes could be fractionated by various biogeochemical processes to different extent. Several papers have previously reviewed the coupling of Cu and Zn isotope systematics, and we give here a tentative review of the recent publications only on Cu isotopesin variable surface repositories, animals and human beings, with a goal to attract much attention to research on Cu (and other metals) behaviors in the environment and biological systems.
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Novak M, Sipkova A, Chrastny V, Stepanova M, Voldrichova P, Veselovsky F, Prechova E, Blaha V, Curik J, Farkas J, Erbanova L, Bohdalkova L, Pasava J, Mikova J, Komarek A, Krachler M. Cu-Zn isotope constraints on the provenance of air pollution in Central Europe: Using soluble and insoluble particles in snow and rime. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 218:1135-1146. [PMID: 27613315 DOI: 10.1016/j.envpol.2016.08.067] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 08/19/2016] [Accepted: 08/24/2016] [Indexed: 06/06/2023]
Abstract
Copper (Cu) and zinc (Zn) isotope ratios can be used to fingerprint sources and dispersion pathways of pollutants in the environment. Little is known, however, about the potential of δ65Cu and δ66Zn values in liquid and solid forms of atmospheric deposition to distinguish between geogenic, industrial, local and remote sources of these potentially toxic base metals. Here we present Cu-Zn deposition fluxes at 10 mountain-top sites in the Czech Republic, a region affected by extremely high industrial emission rates 25 years ago. Additionally, we monitored isotope composition of Cu and Zn in vertical and horizontal atmospheric deposition at two sites. We compared δ65Cu and δ66Zn values in snow and rime, extracted by diluted HNO3 and concentrated HF. Cu and Zn isotope signatures of industrial pollution sources were also determined. Cu and Zn deposition fluxes at all study sites were minute. The mean δ65Cu value of atmospheric deposition (-0.07‰) was higher than the mean δ65Cu value of pollution sources (-1.17‰). The variability in δ65Cu values of atmospheric deposition was lower, compared to the pollution sources. The mean δ66Zn value of atmospheric deposition (-0.09‰) was slightly higher than the mean δ66Zn value of pollution sources (-0.23‰). The variability in δ66Zn values of atmospheric deposition was indistinguishable from that of pollution sources. The largest isotope differences (0.35‰) were observed between the insoluble and soluble fractions of atmospheric deposition. These differences may result from different sources of Cu/Zn for each fraction. The difference in isotope composition of soluble and insoluble particles appears to be a promising tool for pollution provenance studies in Central Europe.
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Affiliation(s)
- Martin Novak
- Division of Geochemistry and Laboratories, Czech Geological Survey, Geologicka 6, 152 00, Prague 5, Czech Republic.
| | - Adela Sipkova
- Division of Geochemistry and Laboratories, Czech Geological Survey, Geologicka 6, 152 00, Prague 5, Czech Republic
| | - Vladislav Chrastny
- Division of Geochemistry and Laboratories, Czech Geological Survey, Geologicka 6, 152 00, Prague 5, Czech Republic
| | - Marketa Stepanova
- Division of Geochemistry and Laboratories, Czech Geological Survey, Geologicka 6, 152 00, Prague 5, Czech Republic
| | - Petra Voldrichova
- Division of Geochemistry and Laboratories, Czech Geological Survey, Geologicka 6, 152 00, Prague 5, Czech Republic
| | - Frantisek Veselovsky
- Division of Geochemistry and Laboratories, Czech Geological Survey, Geologicka 6, 152 00, Prague 5, Czech Republic
| | - Eva Prechova
- Division of Geochemistry and Laboratories, Czech Geological Survey, Geologicka 6, 152 00, Prague 5, Czech Republic
| | - Vladimir Blaha
- Division of Geochemistry and Laboratories, Czech Geological Survey, Geologicka 6, 152 00, Prague 5, Czech Republic
| | - Jan Curik
- Division of Geochemistry and Laboratories, Czech Geological Survey, Geologicka 6, 152 00, Prague 5, Czech Republic
| | - Juraj Farkas
- Division of Geochemistry and Laboratories, Czech Geological Survey, Geologicka 6, 152 00, Prague 5, Czech Republic
| | - Lucie Erbanova
- Division of Geochemistry and Laboratories, Czech Geological Survey, Geologicka 6, 152 00, Prague 5, Czech Republic
| | - Leona Bohdalkova
- Division of Geochemistry and Laboratories, Czech Geological Survey, Geologicka 6, 152 00, Prague 5, Czech Republic
| | - Jan Pasava
- Division of Geochemistry and Laboratories, Czech Geological Survey, Geologicka 6, 152 00, Prague 5, Czech Republic
| | - Jitka Mikova
- Division of Geochemistry and Laboratories, Czech Geological Survey, Geologicka 6, 152 00, Prague 5, Czech Republic
| | - Arnost Komarek
- Faculty of Mathematics and Physics, Charles University, Sokolovska 83, 186 75, Prague 8, Czech Republic
| | - Michael Krachler
- European Commission Joint Research Centre, Institute for Transuranium Elements, 76125, Karlsruhe, Germany
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Babcsányi I, Chabaux F, Granet M, Meite F, Payraudeau S, Duplay J, Imfeld G. Copper in soil fractions and runoff in a vineyard catchment: Insights from copper stable isotopes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 557-558:154-62. [PMID: 26994803 DOI: 10.1016/j.scitotenv.2016.03.037] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 02/26/2016] [Accepted: 03/07/2016] [Indexed: 05/15/2023]
Abstract
Understanding the fate of copper (Cu) fungicides in vineyard soils and catchments is a prerequisite to limit the off-site impact of Cu. Using Cu stable isotopes, Cu retention in soils and runoff transport was investigated in relation to the use of Cu fungicides and the hydrological conditions in a vineyard catchment (Rouffach, Haut-Rhin, France; mean slope: 15%). The δ(65)Cu values of the bulk vineyard soil varied moderately through the depth of the soil profiles (-0.12 to 0.24‰±0.08‰). The values were in the range of those of the fungicides (-0.21 to 0.11‰) and included the geogenic δ(65)Cu value of the untreated soil (0.08‰). However, δ(65)Cu values significantly differed between particle-size soil fractions (-0.37±0.10‰ in fine clays and 0.23±0.07‰ in silt). Together with the soil mineralogy, the results suggested Cu isotope fractionation primarily associated with the clay and fine clay fractions that include both SOM and mineral phases. The vegetation did not affect the Cu isotope patterns in the vineyard soils. Cu export by runoff from the catchment accounted for 1% of the applied Cu mass from 11th May to 20(th) July 2011, covering most of the Cu use period. 84% of the exported Cu mass was Cu bound to suspended particulate matter (SPM). The runoff displayed δ(65)Cu values from 0.52 to 1.35‰ in the dissolved phase (<0.45μm) compared to -0.34 to -0.02‰ in the SPM phase, indicating that clay and fine clay fractions were the main vectors of SPM-bound Cu in runoff. Overall, this study shows that Cu stable isotopes may allow identifying the Cu distribution in the soil fractions and their contribution to Cu export in runoff from Cu-contaminated catchments.
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Affiliation(s)
- Izabella Babcsányi
- Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS), Université de Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France
| | - François Chabaux
- Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS), Université de Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France
| | - Mathieu Granet
- Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS), Université de Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France
| | - Fatima Meite
- Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS), Université de Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France
| | - Sylvain Payraudeau
- Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS), Université de Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France
| | - Joëlle Duplay
- Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS), Université de Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France
| | - Gwenaël Imfeld
- Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS), Université de Strasbourg/EOST, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France.
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Maillard E, Imfeld G. Pesticide mass budget in a stormwater wetland. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:8603-11. [PMID: 25003558 DOI: 10.1021/es500586x] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Wetlands are reactive landscape zones that provide ecosystem services, including the improvement of water quality. Field studies distinguishing pesticide degradation from retention to evaluate the sink and source functions of wetlands are scarce. This study evaluated based on a complete mass budget the partitioning, retention, and degradation of 12 pesticides in water, suspended solids, sediments, and organisms in a wetland receiving contaminated runoff. The mass budget showed the following: (i) dissolved pesticides accounted for 95% of the total load entering the wetland and the pesticide partitioning between the dissolved phase and the suspended solids varied according to the molecules, (ii) pesticides accumulated primarily in the <250 μm bed sediments during spring and late summer, and (iii) the hydrological regime or the incoming pesticide loads did not influence the pesticide dissipation, which varied according to the molecules and the wetland biogeochemical conditions. The vegetation enhanced the pesticide degradation during the vegetative phase and the pesticides were released during plant senescence. The dithiocarbamates were degraded under oxic conditions in spring, whereas glyphosate and aminomethylphosphonic acid (AMPA) degradation occurred under reducing conditions during the summer. The complete pesticide mass budget indicates the versatility of the pesticide sink and source functions of wetland systems.
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Affiliation(s)
- Elodie Maillard
- Laboratory of Hydrology and Geochemistry of Strasbourg (LHyGeS), University of Strasbourg/EOST - UMR 7517 CNRS , 1 rue Blessig, 67084 Strasbourg cedex, France
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