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Ecotoxicological Effect of Nano-silicon Dioxide Particles on Daphnia Magna
Link to Journal Abstract
Engineering nanoparticles (ENPs) have been widely used in many areas in virtue of its special physical and chemical properties. And ENPs are one of the major innovative scientific and economic growth things, which may present a variety of questions for organisms and environment. This paper analyzed the ecotoxicological effect of the nanosized silicon dioxide (Nano-SiO2) and the normal sized silicon dioxide (Nor-SiO2) within 24 hours as its bulk counterpart to Daphnia magna with different concentration. To assess the aquatic ecosystem safety, EC50 value for immobilization and LC50 value for mortality were measured respectively. The results show that the toxicity of Nano-SiO2 has obviously dose-dependent effect but the Nor-SiO2 has not, evidently. The optical microscope and digital camera also been used to observe and record the biological form of Daphnia magna during the exposure and in this study we found that D. magna can uptake and adsorb Nano-SiO2 but only apparently show uptaking to its bulk counterpart. The conclusions of results suggest that there is potential harm to aquatic environment in using Nano-SiO2, and it should deserve special concern.
This paper analyzed the ecotoxicological effect of the nanosized silicon dioxide (Nano-SiO2) and the normal sized silicon dioxide (Nor-SiO2) within 24 hours as its bulk counterpart to Daphnia magna with different concentration. To assess the aquatic ecosystem safety, EC50 value for immobilization and LC50 value for mortality were measured respectively.
Peer Reviewed Journal Article
Exposure Or Hazard Target
Method Of Study
Environmental Fate and Transport
Risk Exposure Group
Integrated Ferroelectrics, 2014, 154(1): 64-72
Yang S, Ye R, Han B, Wei C, Yang X
Last updated on July 2, 2014
This work is supported in part by the Nanoscale Science and Engineering Initiative of the National Science Foundation
under NSF Award Number EEC-0118007.
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