Toxicity of Nanoscale CuO and ZnO to Daphnia magna  

作　　者：ZHAO Hai-zhou LU Guang-hua XIA Jun JIN Shao-ge 

机构地区：[1]Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes,Ministry of Education,College of Environment,Hohai University,Nanjing 210098,P.R.China

出　　处：《Chemical Research in Chinese Universities》2012年第2期209-213,共5页高等学校化学研究（英文版）

基　　金：Supported by the National Basic Research Program of China(No.2010CB429006);the Fundamental Research Funds for the Central Universities of China(No.2010B05714)

摘　　要：The potential effects of nanoscale CuO（nCuO）,nanoscale ZnO（nZnO） and their mixtures on Daphnia magna were investigated,including 48-h acute toxicity and 21-d chronic toxicity tests as well as a feeding experiment.The results of acute toxicity show that nCuO/nZnO mixture was the most toxic followed by nCuO and nZnO.The nanoparticles（NPs） inhibited both the growth and reproduction of Daphnia magna during the testing period.Concentration dependence was apparent in all the cases and the intrinsic rate of natural increase was confirmed to be a very sensitive parameter to NPs exposure.Binary mixture appeared to be more toxic than the corresponding individual exposures at most cases except for the feeding behavior.The potential effects of nanoscale CuO（nCuO）,nanoscale ZnO（nZnO） and their mixtures on Daphnia magna were investigated,including 48-h acute toxicity and 21-d chronic toxicity tests as well as a feeding experiment.The results of acute toxicity show that nCuO/nZnO mixture was the most toxic followed by nCuO and nZnO.The nanoparticles（NPs） inhibited both the growth and reproduction of Daphnia magna during the testing period.Concentration dependence was apparent in all the cases and the intrinsic rate of natural increase was confirmed to be a very sensitive parameter to NPs exposure.Binary mixture appeared to be more toxic than the corresponding individual exposures at most cases except for the feeding behavior.

关 键 词：Daphnia magna NANOPARTICLE Binary mixture TOXICITY 

分 类 号：TQ131.21[化学工程—无机化工] TS218[轻工技术与工程—粮食、油脂及植物蛋白工程]