毒死蜱对铜绿微囊藻的毒性效应研究  

Toxic Effects of Chlorpyrifos on Microcystis aeruginosa

作　　者：洪旭鹭 陈敏东[1] 周军英[2] 单正军[2] 葛峰[2] 

机构地区：[1]南京信息工程大学环境科学与工程学院,江苏省大气环境监测与污染控制高技术重点实验室,江苏省环境净化材料工程技术研究中心,江苏南京210044 [2]环保部南京环境科学研究所,江苏南京210042

出　　处：《环境科学与技术》2015年第10期36-40,共5页Environmental Science & Technology

基　　金：环保公益性行业科研专项(201009033);江苏省大气环境协同创新中心/江苏省优势学科资助

摘　　要：在实验室研究条件下,研究了有机磷农药毒死蜱对铜绿微囊藻的毒性效应,测定了其96 h生长曲线和EC_(50)以及长期毒性环境下铜绿微囊藻叶绿素a含量、蛋白质含量、SOD活性和MDA含量的变化情况。结果表明,毒死蜱96 h EC_(50)为691.50 mg/L;慢性试验中,毒死蜱对铜绿微囊藻叶绿素a和蛋白质有显著抑制作用,在长时间胁迫环境中,低浓度毒死蜱作用下叶绿素a和蛋白质含量可恢复至对照水平;对SOD和MDA显著抑制,两者含量显著降低,表明毒死蜱对铜绿微囊藻产生了较严重的毒害作用。Under laboratory conditions,the toxic effects of organophosphorus pesticide as chlorpyrifos on Microcystis aeruginosa were investigated. The growth curve and E50 for 96 h,the changes in the content of chlorophyll a,protein,MDA and the SOD activity under long-term toxicity of the environment were determined. The results showed that 96 h E50 of chlorpyrifos was 691.50 mg/L. During the chronic experiment,there were significant effects of inhibition on chlorophyll a and protein. Then the content of chlorophyll a and protein would be returned to control level in prolonged stress environment.There were also significant effects on SOD and MDA which had significant reduction on both of them. These showd that serious toxic effects were on Microcystis aeruginosa by chlorpyrifos.

关 键 词：毒死蜱 铜绿微囊藻 EC50 叶绿素A 蛋白质 SOD MDA 

分 类 号：X171.5[环境科学与工程—环境科学] X592