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Comparative toxicity of nano-ZnO and bulk ZnO suspensions to zebrafish and the effects of sedimentation, (center dot)OH production and particle dissolution in distilled water
Yu, Lin-peng; Fang, Tao; Xiong, Dao-wen; Zhu, Wen-tao; Sima, Xiao-feng; Fang, T (reprint author), Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China; fangt@ihb.ac.cn
2011
Source PublicationJOURNAL OF ENVIRONMENTAL MONITORING
ISSN1464-0325
Volume13Issue:7Pages:1975-1982
AbstractWith the common application of nanoscale zinc oxide (nZnO) and significant potential for its release directly into aquatic environments, it is urgent to carry out research on ecotoxicological impact of nZnO. The characterization of nZnO, the amount of (center dot)OH in suspensions in the presence of light and the acute toxicity of nZnO and its bulk counterpart suspensions, as well as the acute toxicity of Zn(2+) solution to zebrafish (Danio rerio) at 96 h were studied. It was found that nZnO aggregated into irregular shapes in suspensions, and showed a relationship between its size distribution and concentration. In the presence of light, nZnO suspensions could generate (center dot)OH, the concentration of which increased with time. Although it was generally thought that (center dot)OH played a role in the biotoxicity to zebrafish, similar toxicity was observed for the nZnO and bulk ZnO suspensions (96 h LC(50) 3.969 mg L(-1), 2.525 mg L(-1), respectively). Furthermore, the sedimentation of nZnO and bulk ZnO in suspensions, and the accumulation of Zn in zebrafish were studied. The results showed that dissolved Zn(2+), from nZnO and bulk ZnO in suspensions, were toxic to zebrafish, while the aggregation and sedimentation of nZnO suspensions reduced the toxicity of nZnO. However, Zn(2+) may not be the main source of acute toxicity of nZnO and bulk ZnO to zebrafish. The experimental results highlight the importance of a systematic assessment of toxicity mechanisms of metal oxide nanoparticles (NPs) to determine definitively whether their toxicity is caused by nano-effects.
KeywordZinc-oxide Nanoparticles Oxidative Stress Daphnia-magna Hydroxyl Radicals Titanium-dioxide Carbon Nanotubes Tio2 Cells Growth Cuo
Department[Yu, LP; Fang, T; Xiong, DW; Zhu, WT; Sima, XF] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China; [Yu, LP; Xiong, DW; Zhu, WT; Sima, XF] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Subject AreaChemistry ; Environmental Sciences & Ecology
Funding OrganizationNational Natural Science Foundation of China[21037004]; Key Project of the National Science and Technology Program[2008ZX07103001] ; National Natural Science Foundation of China[21037004]; Key Project of the National Science and Technology Program[2008ZX07103001] ; National Natural Science Foundation of China[21037004]; Key Project of the National Science and Technology Program[2008ZX07103001] ; National Natural Science Foundation of China[21037004]; Key Project of the National Science and Technology Program[2008ZX07103001]
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China[21037004]; Key Project of the National Science and Technology Program[2008ZX07103001] ; National Natural Science Foundation of China[21037004]; Key Project of the National Science and Technology Program[2008ZX07103001] ; National Natural Science Foundation of China[21037004]; Key Project of the National Science and Technology Program[2008ZX07103001] ; National Natural Science Foundation of China[21037004]; Key Project of the National Science and Technology Program[2008ZX07103001]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/16335
Collection水环境工程研究中心_期刊论文
Corresponding AuthorFang, T (reprint author), Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China; fangt@ihb.ac.cn
Recommended Citation
GB/T 7714
Yu, Lin-peng,Fang, Tao,Xiong, Dao-wen,et al. Comparative toxicity of nano-ZnO and bulk ZnO suspensions to zebrafish and the effects of sedimentation, (center dot)OH production and particle dissolution in distilled water[J]. JOURNAL OF ENVIRONMENTAL MONITORING,2011,13(7):1975-1982.
APA Yu, Lin-peng.,Fang, Tao.,Xiong, Dao-wen.,Zhu, Wen-tao.,Sima, Xiao-feng.,...&fangt@ihb.ac.cn.(2011).Comparative toxicity of nano-ZnO and bulk ZnO suspensions to zebrafish and the effects of sedimentation, (center dot)OH production and particle dissolution in distilled water.JOURNAL OF ENVIRONMENTAL MONITORING,13(7),1975-1982.
MLA Yu, Lin-peng,et al."Comparative toxicity of nano-ZnO and bulk ZnO suspensions to zebrafish and the effects of sedimentation, (center dot)OH production and particle dissolution in distilled water".JOURNAL OF ENVIRONMENTAL MONITORING 13.7(2011):1975-1982.
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