Enhanced toxicity of atrazine to Daphnia magna in the presence of nano-CeO_2

作     者：HAN Zhaoxiang LI Jiaying BAO Wei WANG Jiahong HAN Zhaoxiang;LI Jiaying;BAO Wei;WANG Jiahong

作者机构：School of Chemical EngineeringHuaihai Institute of TechnologyLianyungang 222005China Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental ProtectionYancheng 224002China Department of Chemistry and Applied ChemistryChangji UniversityChangji 831100China School of the EnvironmentNanjiing UniversityNanjiing 210008China 

出 版 物：《Chinese Journal Of Geochemistry》 (中国地球化学学报)

年 卷 期：2012年第31卷第3期

页      面：297-302页

核心收录：

学科分类：082803[工学-农业生物环境与能源工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0828[工学-农业工程] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by Chongqing Key Laboratory of Micro/Nano Materials Engineering and Technology (No. KFJJ1106) Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection (No.JLCBE11004) Jiangsu Marine Resources Development Research Institute (No. JSIMR10E04) 

主　　题：纳米氧化铈 阿特拉津 毒性作用 大型蚤 纳米CeO2 水生生物 莠去津 风险评估 

摘      要：In this study,aquatic toxic effect of atrazine,and nano-CeO2,the accumulation,reproduction and adsorp-tion of atrazine onto nano-CeO2 and the facilitated transport of atrazine into *** by nano-CeO2 were *** results showed that atrazine concentrations of 3.0,4.0,and 10.0 mg/L exhibited 43%,56%,68% mortali-ties,respectively,which indicated the mortality was 56% while the concentration of nano-CeO2 was 4.0 mg/*** accumulated considerably more atrazine when exposed to atrazine-contaminated water in the presence of *** the same time,atrazine and nano-CeO2 yielded a significant reduction of the reproduction rate at all concentrations *** is more,the co-exposure of nano-CeO2 and atrazine was observed to significantly de-crease the reproduction rate of ***,and atrazine adsorbed on nano-CeO2 ***,attention should be paid to their associations with other contaminants for the risk assessment of nano-CeO2 and it is worthy of notice that the sorption of atrazine on nano-CeO2 would enhance the toxicity of atrazine to ***.