Time-Dependent Toxicity Responses in Daphnia magna Exposed to CuO and ZnO Nanoparticles
- Authors
- Kim, Soyoun; Samanta, Palas; Yoo, Jisu; Kim, Woo-Keun; Jung, Jinho
- Issue Date
- 4월-2017
- Publisher
- SPRINGER
- Keywords
- Acute toxicity; Copper; Daphnid; Nanotoxicology; Oxidative stress; Zinc
- Citation
- BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, v.98, no.4, pp.502 - 507
- Indexed
- SCIE
SCOPUS
- Journal Title
- BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
- Volume
- 98
- Number
- 4
- Start Page
- 502
- End Page
- 507
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/84049
- DOI
- 10.1007/s00128-016-2022-1
- ISSN
- 0007-4861
- 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 mu g 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 mu g 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.
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Collections - College of Life Sciences and Biotechnology > Division of Environmental Science and Ecological Engineering > 1. Journal Articles
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