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Kong D, Ma H, Zhu C, Hao Y, Li C. Unraveling the toxicity response and metabolic compensation mechanism of tannic acid-Cr(III) complex on alga Raphidocelis subcapitata. Sci Total Environ 2024; 930:172034. [PMID: 38657806 DOI: 10.1016/j.scitotenv.2024.172034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/26/2024] [Accepted: 03/26/2024] [Indexed: 04/26/2024]
Abstract
Due to their assembly properties and variable molecular weights, the potential biological toxicity effects of macromolecular organic ligand heavy metal complexes are more difficult to predict and their mechanisms are more complex. This study unraveled the toxicity response and metabolic compensation mechanism of tannic acid-Cr(III) (TA-Cr(III)) complex on alga Raphidocelis subcapitata using multi-omics approaches. Results showed TA-Cr(III) complex caused oxidative damage and photosystem disruption, destroying the cell morphology and inhibiting algal growth by >80 % at high exposure levels. TA-Cr(III) complex stress down-regulated proteins linked to proliferation, photosynthesis and antioxidation while upregulating carbon fixation, TCA cycle and amino acid metabolism. The increase of fumarate, citrate, isocitrate and semialdehyde succinate was validated by metabolomics analysis, which improved the TCA cycle, amino acid metabolism and carbon fixation. Activation of the above cellular processes somewhat compensated for the inhibition of algal photosynthesis by TA-Cr(III) complex exposure. In conclusion, physiological toxicity coupled with downstream metabolic compensation in response to Cr(III) complex of macromolecular was characterized in Raphidocelis subcapitata, unveiling the adaptive mechanism of algae under the stress of heavy metal complexes with macromolecular organic ligands.
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Affiliation(s)
- Deyi Kong
- School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi 'an 710021, PR China
| | - Hongrui Ma
- School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi 'an 710021, PR China.
| | - Chao Zhu
- School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi 'an 710021, PR China
| | - Yongyong Hao
- School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi 'an 710021, PR China
| | - Chengtao Li
- School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi 'an 710021, PR China
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2
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Tang S, Gong J, Song B, Li J, Cao W, Zhao J. Co-influence of biochar-supported effective microorganisms and seasonal changes on dissolved organic matter and microbial activity in eutrophic lake. Sci Total Environ 2024; 923:171476. [PMID: 38458471 DOI: 10.1016/j.scitotenv.2024.171476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 02/27/2024] [Accepted: 03/03/2024] [Indexed: 03/10/2024]
Abstract
DOM (dissolved organic matter) play a crucial role in lakes' geochemical and carbon cycles. Eutrophication evolution would influence nutrient status of waters and investigating the DOM variation helps a better understanding of bioremediation on environmental behavior of DOM in eutrophic lakes. In our study, the contents, compositions and characteristics of systematic DOM&SOM (sediment organic matter) were greatly influenced by seasonal changes. But the effective bioremediations obviously reduced the DOM concentration and thus mitigated the eutrophication outbreak risks in water bodies due to the increased MBC (microbial biomass carbon), microbial activity and metabolism. In early summer, the overall DOM in each treatment were readily low levels and derived from both autochthonous and exogenous origins, dominated by fulvic acid-like. In midsummer, the DOM contents and characteristics in each treatment increased significantly as phytoplankton activity improved, and the majority of DOM were humic acid-like and mainly of biological origin. The greatest differences of enzymes, MBC, microbial metabolism and DOM&SOM removal among different treatments were observed in summer months. In autumn, the systematic DOM&SOM slightly reduced due to the deceased microbial activity, in which the microbial humic acids were main component and derived from endogenous sources. Additionally, the gradually decreased SOM with cultivated time in each treatment was a result of microbiological conversion of SOM into DOM. For various treatments, BE, BE.A, BE.C and BE.E increased the MBC, enzymatic and microbial activities due to the application of biochar-supported EMs. Among these, BE and BE.A, especially BE.A with oxygen supplement, achieved the most desirable effect on reducing systematic DOM&SOM levels and increasing enzymatic and microbial activities. The group of EM also reduced the levels of DOM&SOM as improved degradation of EMs for DOM. However, BC, BE.C and BE.E finally did not achieved the desirable effect on reducing DOM&SOM due to the suppression of microbial activities, respectively, from high dose of biochar, weakening of dominant species and additional introduction of EMs in low liveness.
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Affiliation(s)
- Siqun Tang
- College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; Greater Bay Area Institute for Innovation, Hunan University, Guangzhou 511300, Guangdong Province, PR China; Shenzhen Institute, Hunan University, Shenzhen 518000, PR China
| | - Jilai Gong
- College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; Greater Bay Area Institute for Innovation, Hunan University, Guangzhou 511300, Guangdong Province, PR China; Shenzhen Institute, Hunan University, Shenzhen 518000, PR China.
| | - Biao Song
- College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; Greater Bay Area Institute for Innovation, Hunan University, Guangzhou 511300, Guangdong Province, PR China; Shenzhen Institute, Hunan University, Shenzhen 518000, PR China
| | - Juan Li
- College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; Greater Bay Area Institute for Innovation, Hunan University, Guangzhou 511300, Guangdong Province, PR China; Shenzhen Institute, Hunan University, Shenzhen 518000, PR China
| | - Weicheng Cao
- College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; Greater Bay Area Institute for Innovation, Hunan University, Guangzhou 511300, Guangdong Province, PR China; Shenzhen Institute, Hunan University, Shenzhen 518000, PR China
| | - Jun Zhao
- College of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; Greater Bay Area Institute for Innovation, Hunan University, Guangzhou 511300, Guangdong Province, PR China; Shenzhen Institute, Hunan University, Shenzhen 518000, PR China
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3
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Stauber JL, Gadd J, Price GAV, Evans A, Holland A, Albert A, Batley GE, Binet MT, Golding LA, Hickey C, Harford A, Jolley D, Koppel D, McKnight KS, Morais LG, Ryan A, Thompson K, Van Genderen E, Van Dam RA, Warne MSJ. Applicability of Chronic Multiple Linear Regression Models for Predicting Zinc Toxicity in Australian and New Zealand Freshwaters. Environ Toxicol Chem 2023; 42:2614-2629. [PMID: 37477462 DOI: 10.1002/etc.5722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/13/2023] [Accepted: 07/16/2023] [Indexed: 07/22/2023]
Abstract
Bioavailability models, for example, multiple linear regressions (MLRs) of water quality parameters, are increasingly being used to develop bioavailability-based water quality criteria for metals. However, models developed for the Northern Hemisphere cannot be adopted for Australia and New Zealand without first validating them against local species and local water chemistry characteristics. We investigated the applicability of zinc chronic bioavailability models to predict toxicity in a range of uncontaminated natural waters in Australia and New Zealand. Water chemistry data were compiled to guide a selection of waters with different zinc toxicity-modifying factors. Predicted toxicities using several bioavailability models were compared with observed chronic toxicities for the green alga Raphidocelis subcapitata and the native cladocerans Ceriodaphnia cf. dubia and Daphnia thomsoni. The most sensitive species to zinc in five New Zealand freshwaters was R. subcapitata (72-h growth rate), with toxicity ameliorated by high dissolved organic carbon (DOC) or low pH, and hardness having a minimal influence. Zinc toxicity to D. thomsoni (reproduction) was ameliorated by both high DOC and hardness in these same waters. No single trophic level-specific effect concentration, 10% (EC10) MLR was the best predictor of chronic toxicity to the cladocerans, and MLRs based on EC10 values both over- and under-predicted zinc toxicity. The EC50 MLRs better predicted toxicities to both the Australian and New Zealand cladocerans to within a factor of 2 of the observed toxicities in most waters. These findings suggest that existing MLRs may be useful for normalizing local ecotoxicity data to derive water quality criteria for Australia and New Zealand. The final choice of models will depend on their predictive ability, level of protection, and ease of use. Environ Toxicol Chem 2023;42:2614-2629. © 2023 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Jennifer L Stauber
- Commonwealth Scientific and Industrial Research Organisation Environment, Sydney, New South Wales, Australia
- Science, Engineering and Technology, La Trobe University, Wodonga, Victoria, Australia
| | - Jennifer Gadd
- National Institute for Water Research, Auckland, New Zealand
| | - Gwilym A V Price
- Commonwealth Scientific and Industrial Research Organisation Environment, Sydney, New South Wales, Australia
- Faculty of Science, University of Technology, Sydney, New South Wales, Australia
| | - Anthony Evans
- Science, Engineering and Technology, La Trobe University, Wodonga, Victoria, Australia
| | - Aleicia Holland
- Science, Engineering and Technology, La Trobe University, Wodonga, Victoria, Australia
| | - Anathea Albert
- National Institute for Water Research, Auckland, New Zealand
| | - Graeme E Batley
- Commonwealth Scientific and Industrial Research Organisation Environment, Sydney, New South Wales, Australia
| | - Monique T Binet
- Commonwealth Scientific and Industrial Research Organisation Environment, Sydney, New South Wales, Australia
| | - Lisa A Golding
- Commonwealth Scientific and Industrial Research Organisation Environment, Sydney, New South Wales, Australia
| | | | - Andrew Harford
- Environmental Institute of the Supervising Scientist, Darwin, Northern Territory, Australia
| | - Dianne Jolley
- Wollongong Resources, Wollongong, New South Wales, Australia
| | - Darren Koppel
- Australian Institute of Marine Science, Perth, Western Australia, Australia
| | - Kitty S McKnight
- School of Natural Science, Macquarie University, Sydney, New South Wales, Australia
| | - Lucas G Morais
- Science, Engineering and Technology, La Trobe University, Wodonga, Victoria, Australia
| | - Adam Ryan
- International Zinc Association, Syracuse, New York, USA
| | - Karen Thompson
- National Institute for Water Research, Auckland, New Zealand
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Kublay İZ, Koçoğlu ES, Oflu S, Arvas B, Yolaçan Ç, Bakırdere S. Trace nickel determination in seawater matrix using combination of dispersive liquid-liquid microextraction and triethylamine-assisted Mg(OH) 2 method. Environ Monit Assess 2023; 195:861. [PMID: 37335378 DOI: 10.1007/s10661-023-11435-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 05/29/2023] [Indexed: 06/21/2023]
Abstract
In order to eliminate the effects of seawater matrix on the precise/accurate determination of elements, new and efficient analytical procedure requires. In this study, co-precipitation method based on the triethylamine (TEA)-assisted Mg(OH)2 was performed to eliminate side-effects of seawater medium on the determination with flame atomic absorption spectrometry (FAAS) prior to the preconcentration of nickel by an optimized dispersive liquid-liquid microextraction (DLLME) method. Under the optimum conditions of the presented method, the limit of detection and quantification (LOD, LOQ) values obtained for nickel were found as 16.1 and 53.8 μg kg-1, respectively. Seawater samples collected from West Antarctic region were used for real sample applications to check the accuracy and applicability of developed method, and satisfying recovery results (86-97%) were obtained. In addition to this, the digital image-based colorimetric detection system and the UV-Vis system were applied to confirm the applicability of the developed DLLME-FAAS method in other analytical systems.
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Affiliation(s)
- İrem Zehra Kublay
- Chemistry Department, Faculty of Art and Science, Yıldız Technical University, 34220, Istanbul, Türkiye
| | - Elif Seda Koçoğlu
- Central Research Laboratory, Yıldız Technical University, 34220, Istanbul, Türkiye
| | - Sude Oflu
- Chemistry Department, Faculty of Art and Science, Yıldız Technical University, 34220, Istanbul, Türkiye
| | - Büşra Arvas
- Chemistry Department, Faculty of Art and Science, Yıldız Technical University, 34220, Istanbul, Türkiye
| | - Çiğdem Yolaçan
- Chemistry Department, Faculty of Art and Science, Yıldız Technical University, 34220, Istanbul, Türkiye
| | - Sezgin Bakırdere
- Chemistry Department, Faculty of Art and Science, Yıldız Technical University, 34220, Istanbul, Türkiye.
- Turkish Academy of Sciences (TÜBA), Vedat Dalokay Street, No: 112, Çankaya, 06670, Ankara, Türkiye.
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5
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McKnight KS, Gissi F, Adams MS, Stone S, Jolley D, Stauber J. The Effects of Nickel and Copper on Tropical Marine and Freshwater Microalgae Using Single and Multispecies Tests. Environ Toxicol Chem 2023; 42:901-913. [PMID: 36896707 DOI: 10.1002/etc.5565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/11/2022] [Accepted: 01/14/2023] [Indexed: 06/18/2023]
Abstract
Microalgae are key components of aquatic food chains and are known to be sensitive to a range of contaminants. Much of the available data on metal toxicity to microalgae have been derived from temperate single-species tests with temperate data used to supplement tropical toxicity data sets to derive guideline values. In the present study, we used single-species and multispecies tests to investigate the toxicity of nickel and copper to tropical freshwater and marine microalgae, including the free-swimming stage of Symbiodinium sp., a worldwide coral endosymbiont. Based on the 10% effect concentration (EC10) for growth rate, copper was two to four times more toxic than nickel to all species tested. The temperate strain of Ceratoneis closterium was eight to 10 times more sensitive to nickel than the two tropical strains. Freshwater Monoraphidium arcuatum was less sensitive to copper and nickel in the multispecies tests compared with the single-species tests (EC10 values increasing from 0.45 to 1.4 µg Cu/L and from 62 to 330 µg Ni/L). The Symbiodinium sp. was sensitive to copper (EC10 of 3.1 µg Cu/L) and less sensitive to nickel (EC50 >1600 µg Ni/L). This is an important contribution of data on the chronic toxicity of nickel to Symbiodinium sp. A key result from the present study was that three microalgal species had EC10 values below the current copper water quality guideline value for 95% species protection in slightly to moderately disturbed systems in Australia and New Zealand, indicating that they may not be adequately protected by the current copper guideline value. By contrast, toxicity of nickel to microalgae is unlikely to occur at exposure concentrations typically found in fresh and marine waters. Environ Toxicol Chem 2023;42:901-913. © 2023 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
| | - Francesca Gissi
- CSIRO Oceans and Atmosphere, Sydney, New South Wales, Australia
- Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, New South Wales, Australia
| | - Merrin S Adams
- CSIRO Land and Water, Sydney, New South Wales, Australia
| | - Sarah Stone
- CSIRO Land and Water, Sydney, New South Wales, Australia
- Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, New South Wales, Australia
| | - Dianne Jolley
- Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, New South Wales, Australia
| | - Jenny Stauber
- CSIRO Land and Water, Sydney, New South Wales, Australia
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6
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Price GAV, Stauber JL, Jolley DF, Koppel DJ, Van Genderen EJ, Ryan AC, Holland A. Natural organic matter source, concentration, and pH influences the toxicity of zinc to a freshwater microalga. Environ Pollut 2023; 318:120797. [PMID: 36496066 DOI: 10.1016/j.envpol.2022.120797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 11/16/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Abstract
Zinc is a contaminant of concern in aquatic environments and is a known toxicant to many aquatic organisms. Dissolved organic matter (DOM) is a toxicity modifying factor for zinc and is an important water chemistry parameter. This study investigated the influence of DOM concentration, source, and water pH on the chronic toxicity of zinc to a freshwater microalga, Chlorella sp. The influence of DOM on zinc toxicity was dependent on both concentration and source. In the absence of DOM, the 72-h EC50 was 112 μg Zn.L-1. In the presence of a DOM high in fulvic-like components, zinc toxicity was either slightly decreased (<4-fold increase in EC10s across 15 mg C.L-1 range) or unchanged (minimal difference in EC50s). In the presence of a DOM high in humic-like (aromatic and high molecular weight) components, zinc toxicity was slightly decreased at the EC10 level and strongly increased at the EC50 level. The influence of pH on zinc toxicity was dependent on the source of DOM present in the water. In the presence of DOM high in humic-like components pH did not influence toxicity. In the presence of DOM high in fulvic-like components, pH had a significant effect on EC50 values. Labile zinc (measured by diffusive gradients in thin-films) followed linear relationships with dissolved zinc but could not explain the changes in observed toxicity, with similar DGT-labile zinc relationships shown for the two DOMs despite each DOM influencing toxicity differently. This indicates changes in toxicity may be unrelated to changes in zinc lability. The results suggest that increased toxicity of zinc in the presence of DOM may be due to direct uptake of Zn-DOM complexes. This study highlights the importance of considering DOM source and characteristics when incorporating DOM into water quality guidelines through bioavailability models.
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Affiliation(s)
- Gwilym A V Price
- Faculty of Science, University of Technology Sydney Broadway, NSW, 2007, Australia; CSIRO Land and Water, Lucas Heights, NSW, Australia.
| | - Jenny L Stauber
- CSIRO Land and Water, Lucas Heights, NSW, Australia; La Trobe University, School of Agriculture, Biomedicine & Environment, Department of Environment and Genetics, Centre for Freshwater Ecosystems, Albury/Wodonga Campus, Vic, Australia
| | | | - Darren J Koppel
- Australian Institute of Marine Science, Crawley, WA, Australia
| | | | - Adam C Ryan
- International Zinc Association, Durham, NC, USA
| | - Aleicia Holland
- CSIRO Land and Water, Lucas Heights, NSW, Australia; La Trobe University, School of Agriculture, Biomedicine & Environment, Department of Environment and Genetics, Centre for Freshwater Ecosystems, Albury/Wodonga Campus, Vic, Australia
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Bui QTN, Ki JS. Two novel superoxide dismutase genes (CuZnSOD and MnSOD) in the toxic marine dinoflagellate Alexandrium pacificum and their differential responses to metal stressors. Chemosphere 2023; 313:137532. [PMID: 36509186 DOI: 10.1016/j.chemosphere.2022.137532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/08/2022] [Accepted: 12/09/2022] [Indexed: 06/17/2023]
Abstract
Superoxide dismutase (SOD) is an important antioxidant enzyme that is involved in the first line of defense against reactive oxygen species (ROS) within cells. Herein, we determined two novel CuZnSOD and MnSOD genes from the toxic marine dinoflagellate Alexandrium pacificum (designated as ApCuZnSOD and ApMnSOD) and characterized their structural features and phylogenetic affiliations. In addition, we examined the relative gene expression and ROS levels following exposure to heavy metals. ApCuZnSOD encoded 358 amino acids (aa) with two CuZnSOD-conserved domains. ApMnSOD encoded 203 aa that contained a mitochondrial-targeting signal and a MnSOD signature motif but missed an N-terminal domain. Phylogenetic trees showed that ApCuZnSOD clustered with other dinoflagellates, whereas ApMnSOD formed a clade with green algae and plants. Based on the 72-h median effective concentration (EC50), A. pacificum showed toxic responses in the order of Cu, Ni, Cr, Zn, Cd, and Pb. SOD expression levels dramatically increased after 6 h of Pb (≥6.5 times) and 48 h of Cu treatment (≥3.9 times). These results are consistent with the significant increase in ROS production in the A. pacificum exposed to Pb and Cu. These suggest that the two ApSODs are involved in the antioxidant defense system but respond differentially to individual metals.
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Affiliation(s)
- Quynh Thi Nhu Bui
- Department of Biotechnology, Sangmyung University, Seoul, 03016, South Korea
| | - Jang-Seu Ki
- Department of Biotechnology, Sangmyung University, Seoul, 03016, South Korea.
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8
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Shi Z, Du H, Wang C, Xu H. Quantifying the bioaccumulation of Pb to Chlorella vulgaris in the presence of dissolved organic matters with different molecular weights. Environ Sci Pollut Res Int 2022; 29:70921-70932. [PMID: 35593980 DOI: 10.1007/s11356-022-19699-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 03/09/2022] [Indexed: 06/15/2023]
Abstract
Dissolved organic matter (DOM) is ubiquitous in natural waters which exhibits obvious effects on the toxicity of heavy metals. However, information on the toxicity of heavy metals in the presence of DOMs with different molecular weights (MWs) was still unclear. In this study, Suwannee river humic acid (SRHA) and algae-derived organic matter (ADOM) were selected as typical terrestrial and microbial DOMs, with the bulk DOMs fractionating into high MW (HMW-, 1 kDa ~ 0.45 μm) and low MW (LMW-, < 1 kDa) fractions to explore the MW-dependent heterogeneities in the bioaccumulation of Pb to Chlorella vulgaris. Results showed that, regardless of DOM types, the LMW fraction exhibited more acidic groups and humic-like substances than the HMW counterparts. Presence of bulk DOM can decrease the bioaccumulation of Pb, while the specific effects were MW- and type-dependent. The LMW-SRHA enhanced the bioaccumulation of Pb while the HMW counterpart alleviated the effects. However, both the HMW- and LMW-ADOM can reduce the bioaccumulation of Pb to C. vulgaris. Moreover, the correlation analysis showed a significant positive correlation between the content of phenolic-OH and the adsorbed/internalized amounts of Pb, demonstrating that the phenolic-OH played a critical role in altering the bioaccumulation of Pb. The results obtained in this study suggest that distribution of MWs, number of acidic functional groups, and metal complexation capacity within DOM pool should be considered for the eco-environmental risk assessment of heavy metals in aquatic environments.
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Affiliation(s)
- Zhiqiang Shi
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Haiyan Du
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China
| | - Changhui Wang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China
| | - Huacheng Xu
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China.
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9
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Li J, Xu Y, Yin K, Wang R, Guo X, Wang J, Zheng L. Exploring the influence mechanism of dissolved organic matter on the bioavailability and thyroid hormone disrupting effect of zinc: A case study of effluents from galvanizing plants. Ecotoxicol Environ Saf 2022; 241:113747. [PMID: 35709670 DOI: 10.1016/j.ecoenv.2022.113747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 06/01/2022] [Accepted: 06/03/2022] [Indexed: 06/15/2023]
Abstract
The effect of dissolved organic matter (DOM) on metal bioavailability and toxicity is a complex process. Effluents from galvanizing plants containing large amounts of DOM and Zn were selected to investigate the potential influence and mechanism of DOM on Zn bioavailability and its role in inducing thyroid hormone disrupting effects. Thyroid hormone disrupting effects were evaluated using a recombinant thyroid hormone receptor β gene yeast assay. The results suggest that Zn could be the main metal contributor to the toxic effects. Then, Zn-binding characteristics with different fluorescent components of DOM were analyzed using three-dimensional excitation emission matrix fluorescence spectroscopy (3DEEM) and revealed that Zn was more susceptible to interactions with fulvic-like materials. Furthermore, DOM altered the cellular biouptake and compartmentalization processes of Zn by downregulating Zn transmembrane transport-related genes (ZRT1, ZRT2 and ZAP1) and upregulating detoxification-related genes (COT1 and ZRC1), thus altering thyroid toxicity. These results provide comprehensive insights into the influence and mechanism of DOM on bioavailability and thyroid toxicity of Zn and suggest that the influence is associated with complex physical, chemical and biological processes, indicating that more refined medium constraints along with subtle biological reactions should be considered when predicting the bioavailability and toxicity of Zn in environmental water samples.
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Affiliation(s)
- Jian Li
- Engineering Research Center of Groundwater Pollution Control and Remediation, Ministry of Education, College of Water Sciences, Beijing Normal University, Beijing 100875, China
| | - Ying Xu
- Engineering Research Center of Groundwater Pollution Control and Remediation, Ministry of Education, College of Water Sciences, Beijing Normal University, Beijing 100875, China
| | - Kun Yin
- China National Environmental Monitoring Centre, Beijing 100012, China
| | - Rongfang Wang
- Engineering Research Center of Groundwater Pollution Control and Remediation, Ministry of Education, College of Water Sciences, Beijing Normal University, Beijing 100875, China
| | - Xueru Guo
- Engineering Research Center of Groundwater Pollution Control and Remediation, Ministry of Education, College of Water Sciences, Beijing Normal University, Beijing 100875, China
| | - Jinsheng Wang
- Engineering Research Center of Groundwater Pollution Control and Remediation, Ministry of Education, College of Water Sciences, Beijing Normal University, Beijing 100875, China; Advanced Institute of Natural Sciences, Beijing Normal University at Zhuhai, Zhuhai 519087, China.
| | - Lei Zheng
- Engineering Research Center of Groundwater Pollution Control and Remediation, Ministry of Education, College of Water Sciences, Beijing Normal University, Beijing 100875, China.
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10
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Laderriere V, Richard M, Morin S, Le Faucheur S, Fortin C. Temperature and Photoperiod Affect the Sensitivity of Biofilms to Nickel and its Accumulation. Environ Toxicol Chem 2022; 41:1649-1662. [PMID: 35343607 DOI: 10.1002/etc.5335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 10/25/2021] [Accepted: 03/23/2022] [Indexed: 06/14/2023]
Abstract
Whereas metal impacts on fluvial communities have been extensively investigated, effects of abiotic parameters on community responses to contaminants are poorly documented. Variations in photoperiod and temperature commonly occur over the course of a season and could affect aquatic biofilm communities and their responses to contaminants. Our objective was to characterize the influence of environmental conditions (photoperiod and temperature) on nickel (Ni) bioaccumulation and toxicity using a laboratory-grown biofilm. Environmental parameters were chosen to represent variations that can occur over the summer season. Biofilms were exposed for 7 days to six dissolved Ni treatments (ranging from 6 to 115 µM) at two temperatures (14 and 20 °C) using two photoperiods (16:8 and 12:12-h light:dark cycle). Under these different scenarios, structural (dry weight biomass and chlorophyll-a) and functional biomarkers (photosynthetic yield and Ni content) were analyzed at four sampling dates, allowing us to evaluate Ni sensitivity of biofilms over time. The results highlight the effects of temperature on Ni accumulation and tolerance of biofilms. Indeed, biofilms exposed at 20 °C accumulated 1.6-4.2-fold higher concentrations of Ni and were characterized by a lower median effect concentration value using photosynthetic yield compared with those exposed at 14 °C. In terms of photoperiod, significantly greater rates of Ni accumulation were observed at the highest tested Ni concentration for biofilms exposed to a 12:12-h compared with a 16:8-h light:dark cycle. Our study demonstrates the influence of temperature on biofilm metabolism and illustrates that environmental factors may influence Ni accumulation response and thus Ni responses of phototrophic biofilms. Environ Toxicol Chem 2022;41:1649-1662. © 2022 SETAC.
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Affiliation(s)
- Vincent Laderriere
- Centre Eau Terre Environnement, Institut National de la Recherche Scientifique, Québec, Canada
| | - Maxime Richard
- Centre Eau Terre Environnement, Institut National de la Recherche Scientifique, Québec, Canada
| | - Soizic Morin
- Ecosystèmes Aquatiques et Changements Globaux, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Cestas, France
| | | | - Claude Fortin
- Centre Eau Terre Environnement, Institut National de la Recherche Scientifique, Québec, Canada
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11
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Price GAV, Stauber JL, Holland A, Koppel DJ, Van Genderen EJ, Ryan AC, Jolley DF. The influence of hardness at varying pH on zinc toxicity and lability to a freshwater microalga, Chlorella sp. Environ Sci Process Impacts 2022; 24:783-793. [PMID: 35442258 DOI: 10.1039/d2em00063f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Zinc is an essential element for aquatic organisms, however, activities such as mining and refining, as well as zinc's ubiquitous role in modern society can contribute to elevated environmental concentrations of zinc. Water hardness is widely accepted as an important toxicity modifying factor for metals in aquatic systems, though other factors such as pH are also important. This study investigated the influence of increasing water hardness, at three different pH values (6.7, 7.6 and 8.3), on the chronic toxicity of zinc to the growth rate of a microalgae, Chlorella sp. Zinc toxicity decreased with increasing hardness from 5 to 93 mg CaCO3 L-1 at all three pH values tested. The 72 h growth rate inhibition EC50 values ranged from 6.2 μg Zn L-1 (at 5 mg CaCO3 L-1, pH 8.3) to 184 μg Zn L-1 (at 92 mg CaCO3 L-1, pH 6.7). Increases in hardness from 93 to 402 mg CaCO3 L-1 generally resulted in no significant (p > 0.05) reduction in zinc toxicity. DGT-labile zinc measurements did not correspond with the observed changes in zinc toxicity as hardness was varied within a pH treatment. This suggests that cationic competition from increased hardness is decreasing zinc toxicity, rather than changes in metal lability. This study highlighted that current hardness algorithms used in water quality guidelines may not be sufficiently protective of sensitive species, such as Chlorella sp., in high hardness waters.
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Affiliation(s)
- Gwilym A V Price
- Faculty of Science, University of Technology Sydney Broadway, NSW 2007, Australia.
- CSIRO Land and Water, Lucas Heights, NSW, Australia
| | - Jenny L Stauber
- CSIRO Land and Water, Lucas Heights, NSW, Australia
- La Trobe University, School of Life Science, Department of Ecology, Environment and Evolution, Centre for Freshwater Ecosystems, Albury/Wodonga Campus, VIC, Australia
| | - Aleicia Holland
- CSIRO Land and Water, Lucas Heights, NSW, Australia
- La Trobe University, School of Life Science, Department of Ecology, Environment and Evolution, Centre for Freshwater Ecosystems, Albury/Wodonga Campus, VIC, Australia
| | - Darren J Koppel
- CSIRO Land and Water, Lucas Heights, NSW, Australia
- Curtin University, Faculty of Science and Engineering, Bentley, WA, Australia
| | | | - Adam C Ryan
- International Zinc Association, Durham, NC, USA
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Al-wasidi AS, Naglah AM, Saad FA, Abdelrahman EA. Modification of Silica Nanoparticles with 4,6-Diacetylresorcinol as a Novel Composite for the Efficient Removal of Pb(II), Cu(II), Co(II), and Ni(II) Ions from Aqueous Media. J Inorg Organomet Polym Mater. [DOI: 10.1007/s10904-022-02282-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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13
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McDonald S, Holland A, Simpson SL, Gadd JB, Bennett WW, Walker GW, Keough MJ, Cresswel T, Hassell KL. Metal forms and dynamics in urban stormwater runoff: New insights from diffusive gradients in thin-films (DGT) measurements. Water Res 2022; 209:117967. [PMID: 34936976 DOI: 10.1016/j.watres.2021.117967] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 12/01/2021] [Accepted: 12/12/2021] [Indexed: 06/14/2023]
Abstract
Stormwater runoff typically contains significant quantities of metal contaminants that enter urban waterways over short durations and represent a potential risk to water quality. The origin of metals within the catchment and processes that occur over the storm can control the partitioning of metals between a range of different forms. Understanding the fraction of metals present in a form that is potentially bioavailable to aquatic organisms is useful for environmental risk assessment. To help provide this information, the forms and dynamics of metal contaminants in an urban system were assessed across a storm. Temporal patterns in the concentration of metals in dissolved and particulate (total suspended solids; TSS) forms were assessed from water samples, and diffusive gradients in thin-films (DGTs) were deployed to measure the DGT-labile time-integrated metal concentration. Results indicate that the concentrations of dissolved and TSS-associated metals increased during the storm, with the metals Al, Cd, Co, Cu, Pb and Zn representing the greatest concern relative to water quality guideline values (GVs). The portion of labile metal as measured by DGT devices indicated that during the storm a substantial fraction (∼98%) of metals were complexed and pose a lower risk of acute toxicity to aquatic organisms. Comparison of DGT results to GVs indicate that current GVs are likely quite conservative when assessing stormwater pollution risks with regards to metal contaminants. This study provides valuable insight into the forms and dynamics of metals in an urban system receiving stormwater inputs and assists with the development of improved approaches for the assessment of short-term, intermittent discharge events.
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Affiliation(s)
- Sarah McDonald
- The School of BioSciences, The University of Melbourne, Parkville Campus, Parkville, Victoria 3010, Australia.
| | - Aleicia Holland
- Department of Ecology, Environment and Evolution, School of Life Science, La Trobe University, Albury-Wodonga Campus, Albury-Wodonga, Victoria 3690, Australia
| | - Stuart L Simpson
- CSIRO Land and Water, Centre for Environmental Contaminants Research, Locked Bag 2007 Kirrawee, New South Wales 2232, Australia
| | - Jennifer B Gadd
- National Institute of Water and Atmospheric Research Ltd, Private Bag 99940, Viaduct Harbour, Auckland 1010, New Zealand
| | - William W Bennett
- Coastal and Marine Research Centre, Cities Research Institute, Griffith University, Gold Coast Campus, Queensland 4222, Australia
| | - Glen W Walker
- Australian Government Department of Agriculture, Water and the Environment, Canberra, ACT 2601, Australia
| | - Michael J Keough
- The School of BioSciences, The University of Melbourne, Parkville Campus, Parkville, Victoria 3010, Australia
| | - Tom Cresswel
- ANSTO, Locked Bag 2001 Kirrawee, New South Wales 2232, Australia
| | - Kathryn L Hassell
- The School of BioSciences, The University of Melbourne, Parkville Campus, Parkville, Victoria 3010, Australia; Aquatic Environmental Stress Research Group (AQUEST), School of Science, RMIT University, GPO Box 2476, Melbourne, Victoria 3001, Australia
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14
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Zhou X, Wang Q, Guo Y, Sun X, Li T, Yang C. Spectroscopic characterization of dissolved organic matter from macroalgae Ulva pertusa decomposition and its binding behaviors with Cu(II). Ecotoxicol Environ Saf 2021; 225:112811. [PMID: 34563880 DOI: 10.1016/j.ecoenv.2021.112811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/05/2021] [Accepted: 09/19/2021] [Indexed: 06/13/2023]
Abstract
Dissolved organic matter (DOM) from macroalgae is regarded a crucial source of autochthonous DOM in coastal ocean. In the present study, the characteristics of DOM from the macroalgae Ulva pertusa decomposition (U. pertusa-DOM) and its binding behaviors with Cu(II) using multiple spectroscopic techniques and chemometric analyses. The labile U. pertusa-DOM could be consumed and transformed by microorganisms. The absorption spectroscopic descriptors indicate that the hydrophobicity, aromaticity, and molecular weight of the U. pertusa-DOM increase during the 27-day incubation period. Fluorescence excitation-emission matrix spectroscopy combined with parallel factor analysis suggests that the relative abundance of the protein-like component (C1) (96.10-84.96%) sequentially decreases, whereas the humic-like components (C2) (2.16-9.73%) and (C3) (1.75-5.31%) in the U. pertusa-DOM increase with the U. pertusa decomposition. The Cu(II) binding properties of the U. pertusa-DOM are dependent on the decomposition time. The order of the conditional stability constant (logKM) is C2 > C1 > C3. The complexation capacity (f) of C1 is higher than those of C2 and C3 at a specific time. Synchronous fluorescence spectroscopy coupled with two-dimensional correlation spectroscopy reveals that the microbial degradation could accelerate the Cu(II) binding to humic-like fractions in the U. pertusa-DOM. These findings will help us better understand the biogeochemical behaviors of macroalgal DOM and heavy metal in coastal ecosystems.
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Affiliation(s)
- Xiaotian Zhou
- Marine and Fishery institute of Zhejiang Ocean University, Zhoushan 316021, China; Marine Fisheries Research Institute of Zhejiang, Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province, Zhoushan 316021, China
| | - Qilu Wang
- Marine and Fishery institute of Zhejiang Ocean University, Zhoushan 316021, China; Marine Fisheries Research Institute of Zhejiang, Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province, Zhoushan 316021, China
| | - Yuanming Guo
- Marine and Fishery institute of Zhejiang Ocean University, Zhoushan 316021, China; Marine Fisheries Research Institute of Zhejiang, Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province, Zhoushan 316021, China
| | - Xiumei Sun
- Marine and Fishery institute of Zhejiang Ocean University, Zhoushan 316021, China; Marine Fisheries Research Institute of Zhejiang, Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province, Zhoushan 316021, China
| | - Tiejun Li
- Marine and Fishery institute of Zhejiang Ocean University, Zhoushan 316021, China; Marine Fisheries Research Institute of Zhejiang, Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province, Zhoushan 316021, China
| | - Chenghu Yang
- Marine and Fishery institute of Zhejiang Ocean University, Zhoushan 316021, China; Marine Fisheries Research Institute of Zhejiang, Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province, Zhoushan 316021, China.
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15
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Price GAV, Stauber JL, Holland A, Koppel DJ, Van Genderen EJ, Ryan AC, Jolley DF. The Influence of pH on Zinc Lability and Toxicity to a Tropical Freshwater Microalga. Environ Toxicol Chem 2021; 40:2836-2845. [PMID: 34297855 DOI: 10.1002/etc.5177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/27/2021] [Accepted: 07/22/2021] [Indexed: 06/13/2023]
Abstract
Increased focus on the development and application of bioavailability-based metal water quality guideline values requires increased understanding of the influence of water chemistry on metal bioavailability and toxicity. Development of empirical models, such as multiple linear regression models, requires the assessment of the influence of individual water quality parameters as toxicity-modifying factors. The present study investigated the effect of pH on the lability and toxicity of zinc (Zn) to a tropical green microalga (Chlorella sp.). Zinc speciation and lability were explored using the Windermere Humic Aqueous Model (WHAM7), ultrafiltration, and diffusive gradients in thin films (DGT). Zinc toxicity increased significantly with increasing pH from 6.7 to 8.3, with 50% growth inhibition effect concentrations decreasing from 185 to 53 µg l-1 across the pH range. Linear relationships between DGT-labile Zn and dissolved Zn did not vary across the tested pH range, nor did the linear relationship between dissolved (<0.45 µm) and ultrafiltered (<3 kDa) Zn. Our findings show that Zn toxicity to this freshwater alga is altered as a function of pH across environmentally realistic pH ranges and that these toxicity changes could not be explained by Zn speciation and lability as measured by DGT and WHAM7. Environ Toxicol Chem 2021;40:2836-2845. © 2021 SETAC.
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Affiliation(s)
- Gwilym A V Price
- Faculty of Science, University of Technology Sydney, Broadway, New South Wales, Australia
- CSIRO Land and Water, Lucas Heights, New South Wales, Australia
| | - Jenny L Stauber
- CSIRO Land and Water, Lucas Heights, New South Wales, Australia
| | - Aleicia Holland
- CSIRO Land and Water, Lucas Heights, New South Wales, Australia
- School of Life Science, Department of Ecology, Environment and Evolution, Centre for Freshwater Ecosystems, La Trobe University, Albury/Wodonga Campus, Victoria, Australia
| | - Darren J Koppel
- CSIRO Land and Water, Lucas Heights, New South Wales, Australia
- Faculty of Science and Engineering, Curtin University, Bentley, Western Australia, Australia
| | | | - Adam C Ryan
- International Zinc Association, Durham, North Carolina, USA
| | - Dianne F Jolley
- CSIRO Land and Water, Lucas Heights, New South Wales, Australia
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