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Time-Dependent Toxicity Responses in Daphnia magna Exposed to CuO and ZnO Nanoparticles.
Bull Environ Contam Toxicol. 2017 Apr; 98(4):502-507.BE

Abstract

Aggregation and dissolution of CuO and ZnO nanoparticles (NPs) increased with increasing exposure time (24, 48, and 72 h). Acute toxicity of CuO NPs to Daphnia magna also increased significantly with increasing exposure time (p < 0.05), whereas exposure time did not significantly affect acute toxicity of ZnO NPs. The dissolved Cu concentration of CuO NPs was much lower than the median effective concentration (EC50) value (44 μg L-1 at 72 h), implying that the increase in acute toxicity was caused by particles rather than by dissolved ions. However, the dissolved Zn concentration of ZnO NPs was higher than the EC50 value (600 μg L-1 at 72 h), suggesting this acute toxicity may be caused by dissolved ions. Moreover, CuO NPs induced greater lipid peroxidation than Cu ions did at an exposure time of 72 h, whereas converse results were observed for ZnO NPs.

Authors+Show Affiliations

Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea.Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea.Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea.System Toxicology Research Center, Korea Institute of Toxicology, Daejeon, 34114, Republic of Korea.Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea. jjung@korea.ac.kr.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28078368

Citation

Kim, Soyoun, et al. "Time-Dependent Toxicity Responses in Daphnia Magna Exposed to CuO and ZnO Nanoparticles." Bulletin of Environmental Contamination and Toxicology, vol. 98, no. 4, 2017, pp. 502-507.
Kim S, Samanta P, Yoo J, et al. Time-Dependent Toxicity Responses in Daphnia magna Exposed to CuO and ZnO Nanoparticles. Bull Environ Contam Toxicol. 2017;98(4):502-507.
Kim, S., Samanta, P., Yoo, J., Kim, W. K., & Jung, J. (2017). Time-Dependent Toxicity Responses in Daphnia magna Exposed to CuO and ZnO Nanoparticles. Bulletin of Environmental Contamination and Toxicology, 98(4), 502-507. https://doi.org/10.1007/s00128-016-2022-1
Kim S, et al. Time-Dependent Toxicity Responses in Daphnia Magna Exposed to CuO and ZnO Nanoparticles. Bull Environ Contam Toxicol. 2017;98(4):502-507. PubMed PMID: 28078368.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Time-Dependent Toxicity Responses in Daphnia magna Exposed to CuO and ZnO Nanoparticles. AU - Kim,Soyoun, AU - Samanta,Palas, AU - Yoo,Jisu, AU - Kim,Woo-Keun, AU - Jung,Jinho, Y1 - 2017/01/11/ PY - 2016/06/29/received PY - 2016/12/30/accepted PY - 2017/1/13/pubmed PY - 2017/5/2/medline PY - 2017/1/13/entrez KW - Acute toxicity KW - Copper KW - Daphnid KW - Nanotoxicology KW - Oxidative stress KW - Zinc SP - 502 EP - 507 JF - Bulletin of environmental contamination and toxicology JO - Bull Environ Contam Toxicol VL - 98 IS - 4 N2 - Aggregation and dissolution of CuO and ZnO nanoparticles (NPs) increased with increasing exposure time (24, 48, and 72 h). Acute toxicity of CuO NPs to Daphnia magna also increased significantly with increasing exposure time (p < 0.05), whereas exposure time did not significantly affect acute toxicity of ZnO NPs. The dissolved Cu concentration of CuO NPs was much lower than the median effective concentration (EC50) value (44 μg L-1 at 72 h), implying that the increase in acute toxicity was caused by particles rather than by dissolved ions. However, the dissolved Zn concentration of ZnO NPs was higher than the EC50 value (600 μg L-1 at 72 h), suggesting this acute toxicity may be caused by dissolved ions. Moreover, CuO NPs induced greater lipid peroxidation than Cu ions did at an exposure time of 72 h, whereas converse results were observed for ZnO NPs. SN - 1432-0800 UR - https://www.unboundmedicine.com/medline/citation/28078368/Time_Dependent_Toxicity_Responses_in_Daphnia_magna_Exposed_to_CuO_and_ZnO_Nanoparticles_ L2 - https://dx.doi.org/10.1007/s00128-016-2022-1 DB - PRIME DP - Unbound Medicine ER -