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Sans-Duñó J, Cecilia J, Galceran J, Puy J, Baeyens W, Gao Y. Back Accumulation of Diffusive Gradients in Thin-Films Devices with a Stack of Resin Discs To Assess Availability of Metal Cations to Biota in Natural Waters. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:7840-7848. [PMID: 37183959 DOI: 10.1021/acs.est.3c00799] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Determining species, concentrations, and physicochemical parameters in natural waters is key to improve our understanding of the functioning of these ecosystems. Diffusive Gradients in Thin-films (DGT) devices with different thicknesses of the resin or of the diffusive disc can be used to collect independent information on relevant parameters. In particular, DGT devices with a stack of two resin discs offer a simple way to determine dissociation rate constants of metal complexes from the accumulation of the target metal in the back resin disc. In this work, simple approximate expressions for the determination of the dissociation rate constant are reported and applied to a model Ni nitrilotriacetic complex as well as to Zn complexes in the Mediterranean Osor stream. Once the physicochemical parameters are known, one can plot the labile fraction of the metal complexes in terms of the thickness of the diffusion domain. These plots reveal a strong dependence on the nature of complexes as well as on the characteristics of the diffusion domain, and they are of high interest as predictors of availability to biota whose uptake is limited by diffusion.
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Affiliation(s)
- Jordi Sans-Duñó
- Departament de Química, Universitat de Lleida, and AGROTECNIO-CERCA, Rovira Roure 191, Lleida, Catalonia 25198, Spain
- Analytical, Environmental and Geochemical (AMGC), Vrije Universiteit Brussel (VUB), Pleinlaan 2, Brussels B-1050, Belgium
| | - Joan Cecilia
- Departament de Matemàtica, Universitat de Lleida, and AGROTECNIO-CERCA, Rovira Roure 191, Lleida, Catalonia 25198, Spain
| | - Josep Galceran
- Departament de Química, Universitat de Lleida, and AGROTECNIO-CERCA, Rovira Roure 191, Lleida, Catalonia 25198, Spain
| | - Jaume Puy
- Departament de Química, Universitat de Lleida, and AGROTECNIO-CERCA, Rovira Roure 191, Lleida, Catalonia 25198, Spain
| | - Willy Baeyens
- Analytical, Environmental and Geochemical (AMGC), Vrije Universiteit Brussel (VUB), Pleinlaan 2, Brussels B-1050, Belgium
| | - Yue Gao
- Analytical, Environmental and Geochemical (AMGC), Vrije Universiteit Brussel (VUB), Pleinlaan 2, Brussels B-1050, Belgium
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Chi W, Yang Y, Zhang K, Wang P, Du Y, Li X, Sun Y, Liu T, Li F. Seawater intrusion induced cadmium activation via altering its distribution and transformation in paddy soil. CHEMOSPHERE 2022; 307:135805. [PMID: 35917979 DOI: 10.1016/j.chemosphere.2022.135805] [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: 04/29/2022] [Revised: 06/27/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
Seawater intrusion can cause environmental risks to paddy soils around estuaries, but the impacts on the availability of heavy metals are still unclear. River water and sea water were collected along the river of an estuary. A stirred-flow experiment was conducted to examine the Cd desorption behavior in Cd-contaminated paddy soil. While the pH increased with increasing salinity levels, more Cd was released with increasing salinity, suggesting that Cd competition by cations and complexation by anions, but not pH, dominated the release of Cd from soils. Moreover, paddy soil was incubated at different salinities under alternating redox conditions. The availability of Cd, as indicated by the diffusive gradients in thin film (DGT), became relatively high with increasing salinity levels during the initial anaerobic and later aerobic stages. The available Cd fractions substantially decreased under anaerobic condition, and then rapidly increased under aerobic condition. When oxygen was introduced into the system, Cd associated with organic matter and Fe-Mn oxides were released, and oxidative dissolution of Cd sulfides was observed, especially in the high salinity treatment. Seawater intrusion affects biogeochemical cycles and can promote rapid export of NH4+, Fe2+, and SO42- in paddy soils, especially in soils with high salinity. Our findings demonstrated that the high salinity content in paddy soil significantly enhanced the availability of Cd, especially during the drainage stage.
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Affiliation(s)
- Wenting Chi
- Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, PR China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Yang Yang
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, PR China
| | - Ke Zhang
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, PR China
| | - Pei Wang
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, PR China
| | - Yanhong Du
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, PR China
| | - Xiaomin Li
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, PR China; SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, PR China; School of Environment, South China Normal University, Guangzhou 510006, PR China
| | - Yan Sun
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, PR China
| | - Tongxu Liu
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, PR China.
| | - Fangbai Li
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, PR China
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Developments in the diffusive gradients in thin-films technique for the speciation of oxyanions and platinum group elements in aquatic systems. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2021.116513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Gorny J, Jardin C, Diez O, Galceran J, Gourgiotis A, Happel S, Coppin F, Février L, Simonucci C, Cazala C. Dissolved iodide in marine waters determined with Diffusive Gradients in Thin-films technique. Anal Chim Acta 2021; 1177:338790. [PMID: 34482898 DOI: 10.1016/j.aca.2021.338790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 06/15/2021] [Accepted: 06/20/2021] [Indexed: 10/21/2022]
Abstract
For the first time, Diffusive Gradient in Thin-films (DGT) focuses on the inorganic iodine species iodate (IO3-) and iodide (I-). A silver-doped Cl resin (AgdCl), which is known to selectively accumulate I-, was used to make a binding gel. Laboratory investigations were designed to verify the suitability of the AgdCl-DGT method to measure the total I- concentration in environmental waters. Total recovery of I- was obtained using an elution solution containing 100 mmol L-1 KCN. DGT validation experiments in 10 mmol L-1 NaCl showed linear accumulation of I- over time, contrary to IO3-, thus confirming the selectivity of AgdCl-binding gel. The AgdCl-DGT measurement of total I- concentration was independent of pH (4.5-8.8) and was not impacted by the presence of bicarbonate (1-5 mmol L-1). Finally, the performance of AgdCl-DGT samplers were tested in two continental waters and a synthetic seawater. The AgdCl-DGT samplers measured 27-33% of the total I- concentration in the two continental waters up to 24 h of deployment time, whereas the AgdCl-DGT response retrieved the total I- concentration in seawater up to 72 h (106 ± 7%). The difference in DGT response was attributed to the low ionic strength of the two continental waters, limiting the application of AgdCl-DGT method to media with higher ionic strength.
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Affiliation(s)
- Josselin Gorny
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-ENV, SEDRE, LELI, Fontenay-aux-Roses, France.
| | - Cyrielle Jardin
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-ENV, SEDRE, LELI, Fontenay-aux-Roses, France
| | - Olivier Diez
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-ENV, SEDRE, LELI, Fontenay-aux-Roses, France
| | - Josep Galceran
- Departament de Química, Universitat de Lleida and AGROTECNIO-CERCA, Rovira Roure 191, 25198, Lleida, Spain
| | - Alkiviadis Gourgiotis
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-ENV, SEDRE, LELI, Fontenay-aux-Roses, France
| | | | - Fréderic Coppin
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-ENV, SRTE, LR2T, Cadarache, France
| | - Laureline Février
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-ENV, SRTE, LR2T, Cadarache, France
| | - Caroline Simonucci
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-ENV, SEDRE, LELI, Fontenay-aux-Roses, France; Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-ENV, SIRSE, LER-NORD, France
| | - Charlotte Cazala
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-ENV, SEDRE, LELI, Fontenay-aux-Roses, France
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Sans-Duñó J, Cecilia J, Galceran J, Puy J. Availability of metals to DGT devices with different configurations. The case of sequential Ni complexation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 779:146277. [PMID: 33744567 DOI: 10.1016/j.scitotenv.2021.146277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 02/27/2021] [Accepted: 02/28/2021] [Indexed: 06/12/2023]
Abstract
The analytical technique DGT (Diffusive Gradients in Thin-films) is able to gain access to a wealth of information by carefully interpreting accumulation data from passive samplers with different configurations (i.e. different thicknesses of its constituent layers). A set of DGT devices were simultaneously deployed in solutions of Ni and nitrilotriacetic acid (NTA) of different concentrations to measure the availability of Ni in these solutions. Accumulations indicate that the availability of Ni depends on both the thickness of the resin and the thickness of the diffusive gel. In both cases, the lability degree increases as the thickness increases. As the formation of successive complexes (such as Ni(NTA)2) proceeds, the availability of the metal decreases, which is quantitatively explained by reducing the formulation to a case with only one complex, but with an effective dissociation rate constant that decreases as the concentration of NTA increases. Simple analytical expressions are reported to quantify the lability degree in the different DGT configurations. These results indicate that a set of different DGT devices can characterize the availability of a cation in a natural sample with uptake processes at different spatial or time scales. Alternatively, and from a more fundamental point of view, information on speciation, mobilities and labilities of the species present in natural samples can be obtained with a set of DGT configurations.
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Affiliation(s)
- Jordi Sans-Duñó
- Departament de Química, Universitat de Lleida and AGROTECNIO-CERCA, Rovira Roure 191, 25198 Lleida, Spain
| | - Joan Cecilia
- Departament de Matemàtica, Universitat de Lleida and AGROTECNIO-CERCA, Rovira Roure 191, 25198 Lleida, Spain
| | - Josep Galceran
- Departament de Química, Universitat de Lleida and AGROTECNIO-CERCA, Rovira Roure 191, 25198 Lleida, Spain
| | - Jaume Puy
- Departament de Química, Universitat de Lleida and AGROTECNIO-CERCA, Rovira Roure 191, 25198 Lleida, Spain.
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Galceran J, Gao Y, Puy J, Leermakers M, Rey-Castro C, Zhou C, Baeyens W. Speciation of Inorganic Compounds in Aquatic Systems Using Diffusive Gradients in Thin-Films: A Review. Front Chem 2021; 9:624511. [PMID: 33889563 PMCID: PMC8057345 DOI: 10.3389/fchem.2021.624511] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 03/02/2021] [Indexed: 11/22/2022] Open
Abstract
The speciation of trace metals in an aquatic system involves the determination of free ions, complexes (labile and non-labile), colloids, and the total dissolved concentration. In this paper, we review the integrated assessment of free ions and labile metal complexes using Diffusive Gradients in Thin-films (DGT), a dynamic speciation technique. The device consists of a diffusive hydrogel layer made of polyacrylamide, backed by a layer of resin (usually Chelex-100) for all trace metals except for Hg. The best results for Hg speciation are obtained with agarose as hydrogel and a thiol-based resin. The diffusive domain controls the diffusion flux of the metal ions and complexes to the resin, which strongly binds all free ions. By using DGT devices with different thicknesses of the diffusive or resin gels and exploiting expressions derived from kinetic models, one can determine the labile concentrations, mobilities, and labilities of different species of an element in an aquatic system. This procedure has been applied to the determination of the organic pool of trace metals in freshwaters or to the characterization of organic and inorganic complexes in sea waters. The concentrations that are obtained represent time-weighted averages (TWA) over the deployment period.
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Affiliation(s)
- Josep Galceran
- Departament de Química, Universitat de Lleida and AGROTECNIO-CERCA, Lleida, Spain
| | - Yue Gao
- Analytical, Environmental and Geo-Chemistry Department, Vrije Universiteit Brussel, Brussels, Belgium
| | - Jaume Puy
- Departament de Química, Universitat de Lleida and AGROTECNIO-CERCA, Lleida, Spain
| | - Martine Leermakers
- Analytical, Environmental and Geo-Chemistry Department, Vrije Universiteit Brussel, Brussels, Belgium
| | - Carlos Rey-Castro
- Departament de Química, Universitat de Lleida and AGROTECNIO-CERCA, Lleida, Spain
| | - Chunyang Zhou
- Analytical, Environmental and Geo-Chemistry Department, Vrije Universiteit Brussel, Brussels, Belgium
| | - Willy Baeyens
- Analytical, Environmental and Geo-Chemistry Department, Vrije Universiteit Brussel, Brussels, Belgium
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Cindrić AM, Marcinek S, Garnier C, Salaün P, Cukrov N, Oursel B, Lenoble V, Omanović D. Evaluation of diffusive gradients in thin films (DGT) technique for speciation of trace metals in estuarine waters - A multimethodological approach. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 721:137784. [PMID: 32172124 DOI: 10.1016/j.scitotenv.2020.137784] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 03/03/2020] [Accepted: 03/05/2020] [Indexed: 06/10/2023]
Abstract
Understanding the potential bioavailability of trace metals (TM) in marine systems is of prime importance to implement adapted regulations and efficiently protect our coastal and estuarine waters. In this study Diffusive Gradients in Thin films (DGT) technique with two different pore size was used to evaluate the potentially bioavailable fractions (DGT-labile) of Cd, Co, Cu, Ni, Pb and Zn at various depths of a highly stratified estuary (the Krka River estuary, Croatia) both in winter and summer. DGT-labile concentrations were compared to (1) total dissolved concentrations, (2) concentrations of labile species measured by anodic stripping voltammetry (ASV-labile) for Cu and (3) concentrations derived by chemical speciation modelling. High correlation between dissolved and DGT-labile concentrations was found for all metals, except for Zn where contamination problems prevented reliable conclusions. Percentages of DGT-labile fractions over total dissolved concentrations were (AVG ± SD): 92 ± 3%, 64 ± 2%, 23 ± 5%, 61 ± 3% and 57 ± 6% for Cd, Pb, Cu, Ni and Co, respectively. No significant difference was found between trace metal concentrations measured with an open pore and restricted pore devices, implying the predominance of kinetically labile metal complexes smaller than 1 nm. For Cu, ASV-labile and DGT labile concentrations were highly correlated (0.97) with ASV-labile concentration being around 35% lower than that of the DGT-labile. Modelling of chemical speciation reliably predicted dynamic (free, inorganic and part of organic complexes) concentration of Cd, whereas dynamic concentrations of Cu and Pb were underestimated by 32% and 65%, respectively. In view of the relative simplicity of DGT devices, they are well suited for the monitoring effort of coastal waters, informing on potentially bioavailable concentrations of TM and thereby, helping to achieve good environmental status of coastal waters, as stipulated within the EU Water Framework Directive.
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Affiliation(s)
- Ana-Marija Cindrić
- Ruđer Bošković Institute, Center for Marine and Environmental Research, Bijenička 54, Zagreb, Croatia
| | - Saša Marcinek
- Ruđer Bošković Institute, Center for Marine and Environmental Research, Bijenička 54, Zagreb, Croatia
| | - Cédric Garnier
- Université de Toulon, Aix Marseille Université, CNRS/INSU, IRD, MIO UM 110, Mediterranean Institute of Oceanography, La Garde, France
| | - Pascal Salaün
- Department of Earth and Ocean Sciences, University of Liverpool, Brownlow Street, Liverpool L69 3GP, UK
| | - Neven Cukrov
- Ruđer Bošković Institute, Center for Marine and Environmental Research, Bijenička 54, Zagreb, Croatia
| | - Benjamin Oursel
- Université de Toulon, Aix Marseille Université, CNRS/INSU, IRD, MIO UM 110, Mediterranean Institute of Oceanography, La Garde, France
| | - Véronique Lenoble
- Université de Toulon, Aix Marseille Université, CNRS/INSU, IRD, MIO UM 110, Mediterranean Institute of Oceanography, La Garde, France
| | - Dario Omanović
- Ruđer Bošković Institute, Center for Marine and Environmental Research, Bijenička 54, Zagreb, Croatia.
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Numerical Simulation of Non-Linear Models of Reaction—Diffusion for a DGT Sensor. ALGORITHMS 2020. [DOI: 10.3390/a13040098] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In this work, we present a novel strategy for the numerical solution of a coupled system of partial differential equations that describe reaction–diffusion processes of a mixture of metals and ligands that can be absorbed by a sensor or a microorganism, in an aqueous medium. The novelty introduced in this work consisted of an adequate database management in conjunction with a direct iterative schema, which allowed the construction of simple, fast and efficient algorithms. Except in really adverse conditions, the calculation is converging and satisfactory solutions were reached. Computing times showed to be better than those obtained with some commercial programs. Although we concentrate on the solution for a particular system (Diffusive Gradients in Thin Films [DGT] sensors), the proposed algorithm does not require major modifications to consider new theoretical or experimental configurations. Since the quality of numerical simulations of reaction–diffusion problems often faces some drawbacks as the values of reaction rate constants increase, some additional effort has been invested in obtaining proper solutions in those cases.
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Yin DX, Fang W, Guan DX, Williams PN, Moreno-Jimenez E, Gao Y, Zhao FJ, Ma LQ, Zhang H, Luo J. Localized Intensification of Arsenic Release within the Emergent Rice Rhizosphere. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:3138-3147. [PMID: 31968168 DOI: 10.1021/acs.est.9b04819] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Behavior of trace elements in flooded/lowland rice soils is controlled by root-zone iron oxidation. Insoluble iron species bind/capture toxic elements, i.e., arsenic. However, it was recently observed that within this territory of arsenic immobilization lies a zone of prolific iron release, accompanied by a significant flux of arsenic in close proximity to rice root apices. Questions still remain on how common this phenomenon is and whether the chemical imaging approaches or soils/cultivars used influence this event. Here, three types of ultrathin/high-resolution diffusive gradient in thin films (DGT) substrates were integrated with oxygen planar optodes in a multilayer system, providing two-dimensional mapping of solute fluxes. The three DGT approaches revealed a consistent/overlapping spatial distribution with localized flux maxima for arsenic, which occurred in all experiments, concomitant with iron mobilization. Soil/porewater microsampling within the rhizosphere revealed no significant elevation in the solid phase's total iron and arsenic concentrations between aerobic and anaerobic zones. Contrary to arsenic, phosphorus bioavailability was shown to decrease in the arsenic/iron flux maxima. Rice roots, in addition to their role in nutrient acquisition, also perform a key sensory function. Flux maxima represent a significant departure from the chemical conditions of the bulk/field environment, but our observations of a complete rhizosphere reveal a mixed mode of root-soil interactions.
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Affiliation(s)
- Dai-Xia Yin
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Wen Fang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Dong-Xing Guan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Paul N Williams
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Belfast BT9 5DL, Northern Ireland, United Kingdom
| | - Eduardo Moreno-Jimenez
- Department of Agricultural and Food Chemistry, Universidad Autónoma de Madrid, Madrid E-28049, Spain
| | - Yue Gao
- Analytical, Environmental and Geochemistry (AMGC), Faculty of Science, Vrije Universiteit Brussel, Pleinlaan 2, Brussels 1050, Belgium
| | - Fang-Jie Zhao
- Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Lena Q Ma
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China
- Soil and Water Science Department, University of Florida, Gainesville, Florida 32611, United States
| | - Hao Zhang
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, U.K
| | - Jun Luo
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China
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Time weighted average concentrations measured with Diffusive Gradients in Thin films (DGT). Anal Chim Acta 2019; 1060:114-124. [DOI: 10.1016/j.aca.2019.01.056] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 01/04/2019] [Accepted: 01/31/2019] [Indexed: 11/22/2022]
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11
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Comparison of different speciation techniques to measure Zn availability in hydroponic media. Anal Chim Acta 2018; 1035:32-43. [DOI: 10.1016/j.aca.2018.06.071] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 06/06/2018] [Accepted: 06/25/2018] [Indexed: 11/22/2022]
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12
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Welikala D, Hucker C, Hartland A, Robinson BH, Lehto NJ. Trace metal mobilization by organic soil amendments: insights gained from analyses of solid and solution phase complexation of cadmium, nickel and zinc. CHEMOSPHERE 2018; 199:684-693. [PMID: 29475159 DOI: 10.1016/j.chemosphere.2018.02.069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 02/07/2018] [Accepted: 02/09/2018] [Indexed: 06/08/2023]
Abstract
The accumulation of Cd in soils worldwide has increased the demand for methods to reduce the metal's plant bioavailability. Organic matter rich soil amendments have been shown to be effective in achieving this. However, it is not known how long these amendments can retain the Cd, and whether dissolved organic matter (DOM) released from them can enhance the metal's mobility in the environment. In this study we sought to test the Cd binding capacity of various organic soil amendments, and evaluate differences in characteristics of the DOM released to see if they can explain the lability of the Cd-DOM complexes. We collected ten organic soil amendments from around New Zealand: five different composts, biosolids from two sources, two types of peat and spent coffee grounds. We characterised the amendments' elemental composition and their ability to bind the Cd. We then selected two composts and two peats for further tests, where we measured the sorption of Ni or Zn by the amendments. We analysed the quality of the extracted DOM from the four amendments using 3D Excitation Emission Matrix analysis, and tested the lability of the metal-DOM complexes using an adapted diffusive gradients in thin-films (DGT) method. We found that composts bound the most Cd and that the emergent Cd-DOM complexes were less labile than those from the peats. Ni-DOM complexes were the least labile. The aromaticity of the extracted DOM appears to be an important factor in determining the lability of Ni complexes, but less so for Zn and Cd.
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Affiliation(s)
- Dharshika Welikala
- Department of Soil and Physical Sciences, Lincoln University, Lincoln, 7647, Christchurch, New Zealand
| | - Cameron Hucker
- Department of Soil and Physical Sciences, Lincoln University, Lincoln, 7647, Christchurch, New Zealand
| | - Adam Hartland
- Environmental Research Institute, School of Science, University of Waikato, Private Bag 3105, Hamilton, 3240, New Zealand
| | - Brett H Robinson
- School of Physical and Chemical Sciences, University of Canterbury, New Zealand
| | - Niklas J Lehto
- Department of Soil and Physical Sciences, Lincoln University, Lincoln, 7647, Christchurch, New Zealand.
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Lao M, Companys E, Weng L, Puy J, Galceran J. Speciation of Zn, Fe, Ca and Mg in wine with the Donnan Membrane Technique. Food Chem 2018; 239:1143-1150. [DOI: 10.1016/j.foodchem.2017.07.040] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 06/14/2017] [Accepted: 07/10/2017] [Indexed: 11/28/2022]
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Menegário AA, Yabuki LNM, Luko KS, Williams PN, Blackburn DM. Use of diffusive gradient in thin films for in situ measurements: A review on the progress in chemical fractionation, speciation and bioavailability of metals in waters. Anal Chim Acta 2017; 983:54-66. [DOI: 10.1016/j.aca.2017.06.041] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 06/23/2017] [Accepted: 06/24/2017] [Indexed: 11/16/2022]
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15
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dos Anjos VE, Abate G, Grassi MT. Determination of labile species of As(V), Ba, Cd, Co, Cr(III), Cu, Mn, Ni, Pb, Sr, V(V), and Zn in natural waters using diffusive gradients in thin-film (DGT) devices modified with montmorillonite. Anal Bioanal Chem 2016; 409:1963-1972. [DOI: 10.1007/s00216-016-0144-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 12/05/2016] [Accepted: 12/09/2016] [Indexed: 11/27/2022]
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16
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Altier A, Jiménez-Piedrahita M, Rey-Castro C, Cecilia J, Galceran J, Puy J. Accumulation of Mg to Diffusive Gradients in Thin Films (DGT) Devices: Kinetic and Thermodynamic Effects of the Ionic Strength. Anal Chem 2016; 88:10245-10251. [PMID: 27660851 DOI: 10.1021/acs.analchem.6b02961] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Alexandra Altier
- Departament de Química and ‡Departament de Matemàtica, Universitat de Lleida and AGROTECNIO, Rovira Roure 191, 25198, Lleida, Spain
| | - Martín Jiménez-Piedrahita
- Departament de Química and ‡Departament de Matemàtica, Universitat de Lleida and AGROTECNIO, Rovira Roure 191, 25198, Lleida, Spain
| | - Carlos Rey-Castro
- Departament de Química and ‡Departament de Matemàtica, Universitat de Lleida and AGROTECNIO, Rovira Roure 191, 25198, Lleida, Spain
| | - Joan Cecilia
- Departament de Química and ‡Departament de Matemàtica, Universitat de Lleida and AGROTECNIO, Rovira Roure 191, 25198, Lleida, Spain
| | - Josep Galceran
- Departament de Química and ‡Departament de Matemàtica, Universitat de Lleida and AGROTECNIO, Rovira Roure 191, 25198, Lleida, Spain
| | - Jaume Puy
- Departament de Química and ‡Departament de Matemàtica, Universitat de Lleida and AGROTECNIO, Rovira Roure 191, 25198, Lleida, Spain
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17
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Cusnir R, Jaccard M, Bailat C, Christl M, Steinmann P, Haldimann M, Bochud F, Froidevaux P. Probing the Kinetic Parameters of Plutonium-Naturally Occurring Organic Matter Interactions in Freshwaters Using the Diffusive Gradients in Thin Films Technique. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:5103-10. [PMID: 27064997 DOI: 10.1021/acs.est.5b05435] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The interaction of trace metals with naturally occurring organic matter (NOM) is a key process of the speciation of trace elements in aquatic environments. The rate of dissociation of metal-NOM complexes will impact the amount of free metal available for biouptake. Assessing the bioavailability of plutonium (Pu) helps to predict its toxic effects on aquatic biota. However, the rate of dissociation of Pu-NOM complexes in natural freshwaters is currently unknown. Here, we used the technique of diffusive gradients in thin films (DGT) with several diffusive layer thicknesses to provide new insights into the dissociation kinetics of Pu-NOM complexes. Results show that Pu complexes with NOM (mainly fulvic acid) are somewhat labile (0.2 ≤ ξ ≤ 0.4), with kd = 7.5 × 10(-3) s(-1). DGT measurements of environmental Pu in organic-rich natural water confirm these findings. In addition, we determined the effective diffusion coefficients of Pu(V) in polyacrylamide (PAM) gel in the presence of humic acid using a diffusion cell (D = 1.70 ± 0.25 × 10(-6) cm(2) s(-1)). These results show that Pu(V) is a more mobile species than Pu(IV).
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Affiliation(s)
- Ruslan Cusnir
- Institute of Radiation Physics, Lausanne University Hospital , 1007 Lausanne, Switzerland
| | - Maud Jaccard
- Institute of Radiation Physics, Lausanne University Hospital , 1007 Lausanne, Switzerland
| | - Claude Bailat
- Institute of Radiation Physics, Lausanne University Hospital , 1007 Lausanne, Switzerland
| | - Marcus Christl
- Laboratory of Ion Beam Physics, ETH Zurich , 8093 Zürich, Switzerland
| | - Philipp Steinmann
- Division of Radiation Protection, Federal Office of Public Health , 3003 Berne, Switzerland
| | - Max Haldimann
- Division of Radiation Protection, Federal Office of Public Health , 3003 Berne, Switzerland
| | - François Bochud
- Institute of Radiation Physics, Lausanne University Hospital , 1007 Lausanne, Switzerland
| | - Pascal Froidevaux
- Institute of Radiation Physics, Lausanne University Hospital , 1007 Lausanne, Switzerland
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18
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Shiva AH, Bennett WW, Welsh DT, Teasdale PR. In situ evaluation of DGT techniques for measurement of trace metals in estuarine waters: a comparison of four binding layers with open and restricted diffusive layers. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2016; 18:51-63. [PMID: 26678534 DOI: 10.1039/c5em00550g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Four different DGT binding layers were used to make selective measurements of trace metals in coastal waters within The Broadwater (Gold Coast, Queensland). Chelex and PAMPAA (polyacrylamide-polyacrylic acid) binding layers were used to measure cations (Cd, Co, Cu, Mn, Ni, Pb, Zn), and Metsorb was used to measure anions (Al, As, Mo, Sb, V, W). A mixed binding layer (MBL) containing both Chelex and Metsorb was used to measure each of the trace metals and determine diffusive boundary layer (DBL) thicknesses. DGT measurements that were not corrected for the DBL thickness (0.049-0.087) were underestimated by 70% on average. Good agreement was observed between DGT-MBL and DGT-Chelex for measurement of Cd, Co, Cu, Ni, Pb and Zn, and between DGT-MBL and DGT-Metsorb for As, Sb and V. DGT-MBL measured significantly higher concentrations for Mn (compared with DGT-Chelex) and Al (compared with DGT-Metsorb). DGT-Chelex measured only 6-8% of Al species measured by either DGT-MBL or DGT-Metsorb. DGT-PAMPAA measurements of Cu, Pb and Al were lower than those of either DGT-MBL or DGT-Chelex varying from 74-81% for Cu to 54-70% for Pb and 51-55% for anionic Al(OH)4(-), suggesting that this binding layer may make more selective measurements. All measured trace metal concentrations were well below ANZECC water quality guidelines, except for Cu which was 2 to 10 times higher than trigger values. Each of the DGT techniques was deployed using both open and restricted diffusive layers (ODL and RDL). Most trace metal measurements were not significantly different with ODL and RDL for all binding layers. However, concentrations of Cu (CRDL/CODL = 0.68-0.75) and Al (CRDL/CODL = 0.73-0.79) were significantly different with DGT-MBL, DGT-Chelex and DGT-Metsorb.
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Affiliation(s)
- Amir Houshang Shiva
- Environmental Futures Research Institute, Griffith University, Gold Coast Campus, QLD 4215, Australia.
| | - William W Bennett
- Environmental Futures Research Institute, Griffith University, Gold Coast Campus, QLD 4215, Australia.
| | - David T Welsh
- Environmental Futures Research Institute, Griffith University, Gold Coast Campus, QLD 4215, Australia.
| | - Peter R Teasdale
- Environmental Futures Research Institute, Griffith University, Gold Coast Campus, QLD 4215, Australia.
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Jiménez-Piedrahita M, Altier A, Cecilia J, Rey-Castro C, Galceran J, Puy J. Influence of the settling of the resin beads on diffusion gradients in thin films measurements. Anal Chim Acta 2015; 885:148-55. [PMID: 26231900 DOI: 10.1016/j.aca.2015.04.054] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 04/26/2015] [Accepted: 04/28/2015] [Indexed: 11/30/2022]
Abstract
Binding resin beads used in DGT (diffusion gradients in thin films) tend to settle to one side of the resin during casting. This phenomenon might be relevant for metal accumulation when partially labile complexes dominate the metal speciation, especially after recognizing the important role played by complex dissociation in the resin domain. The influence of the inhomogeneity of the binding agent distribution on metal accumulation is here assessed by numerical simulation of DGT devices with binding beads in only one half of the resin disc, as a reasonable model of the standard resin discs. Results indicate that a decrease in mass accumulation of less than 13% can arise in these inhomogeneous devices (as compared with an ideal disc with homogeneous dispersion of the resin beads) when complexes with stability constant K<10(2)m(3)mol(-1) (K<10(5)Lmol(-1)) dominate the metal speciation. The loss increases as K increases, but the percentage of mass loss always remains lower than the volume fraction of resin disc without beads. For very labile or inert complexes, the impact of the inhomogeneous distribution of binding resin beads is negligible. As kinetic dissociation constants of complexes can be estimated from the distribution of the metal accumulation in a DGT device with a stack of two resin discs, the influence of the inhomogeneity on the recovered kinetic constant is also assessed. For the cases studied, the recovered kinetic dissociation constant, kd,recovered, retains the correct order of magnitude, being related to the true kd by kd≈f(-1)kd,recovered, quite independently of K and kd values, being f the fraction of volume of the resin disc where resin beads are dispersed.
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Affiliation(s)
| | - Alexandra Altier
- Departament de Química,Universitat de Lleida and Agrotecnio, Rovira Roure 191, Lleida, 25198, Spain
| | - Joan Cecilia
- Departament de Matemàtica, Universitat de Lleida and Agrotecnio, Rovira Roure 191, 25198, Lleida, Spain
| | - Carlos Rey-Castro
- Departament de Química,Universitat de Lleida and Agrotecnio, Rovira Roure 191, Lleida, 25198, Spain
| | - Josep Galceran
- Departament de Química,Universitat de Lleida and Agrotecnio, Rovira Roure 191, Lleida, 25198, Spain
| | - Jaume Puy
- Departament de Química,Universitat de Lleida and Agrotecnio, Rovira Roure 191, Lleida, 25198, Spain.
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