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Comparative dissolution, uptake, and toxicity of zinc oxide particles in individual aquatic species and mixed populations.
Environ Toxicol Chem. 2019 03; 38(3):591-602.ET

Abstract

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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Authors+Show Affiliations

Wu F
School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, Oregon, USA.
Harper BJ
Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon, USA.
Harper SL
School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, Oregon, USA. Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon, USA. Oregon Nanoscience and Microtechnologies Institute, Eugene, Oregon, USA.

MeSH

AnimalsChlamydomonas reinhardtiiDaphniaMetal NanoparticlesParticle SizeSolubilityToxicity TestsWater Pollutants, ChemicalZebrafishZinc Oxide

Pub Type(s)

Comparative Study
Journal Article
Research Support, N.I.H., Extramural
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

30615210

Citation

Wu, Fan, et al. "Comparative Dissolution, Uptake, and Toxicity of Zinc Oxide Particles in Individual Aquatic Species and Mixed Populations." Environmental Toxicology and Chemistry, vol. 38, no. 3, 2019, pp. 591-602.
Wu F, Harper BJ, Harper SL. Comparative dissolution, uptake, and toxicity of zinc oxide particles in individual aquatic species and mixed populations. Environ Toxicol Chem. 2019;38(3):591-602.
Wu, F., Harper, B. J., & Harper, S. L. (2019). Comparative dissolution, uptake, and toxicity of zinc oxide particles in individual aquatic species and mixed populations. Environmental Toxicology and Chemistry, 38(3), 591-602. https://doi.org/10.1002/etc.4349
Wu F, Harper BJ, Harper SL. Comparative Dissolution, Uptake, and Toxicity of Zinc Oxide Particles in Individual Aquatic Species and Mixed Populations. Environ Toxicol Chem. 2019;38(3):591-602. PubMed PMID: 30615210.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparative dissolution, uptake, and toxicity of zinc oxide particles in individual aquatic species and mixed populations. AU - Wu,Fan, AU - Harper,Bryan J, AU - Harper,Stacey L, Y1 - 2019/02/18/ PY - 2018/08/20/received PY - 2018/09/27/revised PY - 2018/12/19/accepted PY - 2019/1/8/pubmed PY - 2019/6/14/medline PY - 2019/1/8/entrez KW - Algae KW - Aquatic toxicity KW - Daphnia KW - Microcosm KW - Nanoparticle KW - Zebrafish SP - 591 EP - 602 JF - Environmental toxicology and chemistry JO - Environ Toxicol Chem VL - 38 IS - 3 N2 - 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. SN - 1552-8618 UR - https://www.unboundmedicine.com/medline/citation/30615210/Comparative_dissolution_uptake_and_toxicity_of_zinc_oxide_particles_in_individual_aquatic_species_and_mixed_populations_ DB - PRIME DP - Unbound Medicine ER -