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Comparative dissolution, uptake, and toxicity of zinc oxide particles in individual aquatic species and mixed populations

Potential differences in species susceptibility to nanoparticle (NP) contaminants make the use of multispecies community toxicity testing strategies beneficial in understanding NP risk to aquatic environments. Because of the limited knowledge of zinc oxide (ZnO) NP fate and toxicity, we conducted mu...

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Autores principales: Wu, Fan, Harper, Bryan J., Harper, Stacey L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6446720/
https://www.ncbi.nlm.nih.gov/pubmed/30615210
http://dx.doi.org/10.1002/etc.4349
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author Wu, Fan
Harper, Bryan J.
Harper, Stacey L.
author_facet Wu, Fan
Harper, Bryan J.
Harper, Stacey L.
author_sort Wu, Fan
collection PubMed
description Potential differences in species susceptibility to nanoparticle (NP) contaminants make the use of multispecies community toxicity testing strategies beneficial in understanding NP risk to aquatic environments. Because of the limited knowledge of zinc oxide (ZnO) NP fate and toxicity, we conducted multispecies exposures and compared the responses of individual species to the same species in a community comprised of algae (Chlamydomonas reinhardtii), bacteria (Escherichia coli), crustaceans (Daphnia magna), and zebrafish (Danio rerio). Different‐sized ZnO particles and ionic Zn were compared to investigate the contribution of particulate and dissolved Zn to aquatic organism toxicity. Each organism and community was exposed to Zn sources at 0.08, 0.8, and 8 mg Zn/L. The present results indicate that all 3 types of Zn elicited differential toxicity among test organisms, with stronger adverse outcomes observed in single species than within a community. The community assay (nanocosm) we developed increased resilience to all Zn exposures by 5 to 10% compared to individual exposures at equivalent concentrations. In addition, the uptake and toxicity of ZnO particles to aquatic communities appear to be driven by rapid dissolution and the concomitant impacts of zinc ion toxicity, and the size of the ZnO particles had little impact on uptake or toxicity. The nanocosm assay could be a useful screening tool for rapidly assessing the potential impacts of nanomaterials to aquatic species. Environ Toxicol Chem 2019;38:591–602. © 2019 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals, Inc. on behalf of SETAC.
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spelling pubmed-64467202019-04-10 Comparative dissolution, uptake, and toxicity of zinc oxide particles in individual aquatic species and mixed populations Wu, Fan Harper, Bryan J. Harper, Stacey L. Environ Toxicol Chem Environmental Toxicology Potential differences in species susceptibility to nanoparticle (NP) contaminants make the use of multispecies community toxicity testing strategies beneficial in understanding NP risk to aquatic environments. Because of the limited knowledge of zinc oxide (ZnO) NP fate and toxicity, we conducted multispecies exposures and compared the responses of individual species to the same species in a community comprised of algae (Chlamydomonas reinhardtii), bacteria (Escherichia coli), crustaceans (Daphnia magna), and zebrafish (Danio rerio). Different‐sized ZnO particles and ionic Zn were compared to investigate the contribution of particulate and dissolved Zn to aquatic organism toxicity. Each organism and community was exposed to Zn sources at 0.08, 0.8, and 8 mg Zn/L. The present results indicate that all 3 types of Zn elicited differential toxicity among test organisms, with stronger adverse outcomes observed in single species than within a community. The community assay (nanocosm) we developed increased resilience to all Zn exposures by 5 to 10% compared to individual exposures at equivalent concentrations. In addition, the uptake and toxicity of ZnO particles to aquatic communities appear to be driven by rapid dissolution and the concomitant impacts of zinc ion toxicity, and the size of the ZnO particles had little impact on uptake or toxicity. The nanocosm assay could be a useful screening tool for rapidly assessing the potential impacts of nanomaterials to aquatic species. Environ Toxicol Chem 2019;38:591–602. © 2019 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals, Inc. on behalf of SETAC. John Wiley and Sons Inc. 2019-02-18 2019-03 /pmc/articles/PMC6446720/ /pubmed/30615210 http://dx.doi.org/10.1002/etc.4349 Text en © 2019 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals, Inc. on behalf of SETAC. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Environmental Toxicology
Wu, Fan
Harper, Bryan J.
Harper, Stacey L.
Comparative dissolution, uptake, and toxicity of zinc oxide particles in individual aquatic species and mixed populations
title Comparative dissolution, uptake, and toxicity of zinc oxide particles in individual aquatic species and mixed populations
title_full Comparative dissolution, uptake, and toxicity of zinc oxide particles in individual aquatic species and mixed populations
title_fullStr Comparative dissolution, uptake, and toxicity of zinc oxide particles in individual aquatic species and mixed populations
title_full_unstemmed Comparative dissolution, uptake, and toxicity of zinc oxide particles in individual aquatic species and mixed populations
title_short Comparative dissolution, uptake, and toxicity of zinc oxide particles in individual aquatic species and mixed populations
title_sort comparative dissolution, uptake, and toxicity of zinc oxide particles in individual aquatic species and mixed populations
topic Environmental Toxicology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6446720/
https://www.ncbi.nlm.nih.gov/pubmed/30615210
http://dx.doi.org/10.1002/etc.4349
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