张宁;周启星;李婷;罗义;

• 1:南开大学环境科学与工程学院环境污染过程与基准教育部重点实验室
• 2:南开大学环境科学与工程学院环境污染过程与基准教育部重点实验室
• 3:南开大学环境科学与工程学院环境污染过程与基准教育部重点实验室
• 4:南开大学环境科学与工程学院环境污染过程与基准教育部重点实验室 天津300071

摘要(Abstract)：

在实验室模拟条件下,研究了氧化型染发剂对双齿围沙蚕(Perinereis aibuhiteusis Grube)的急性毒性效应及不同暴露浓度(0、40、80、160、320mg·L-1)和暴露时间(0、4、6、8、10d)下对其体内乙酰胆碱酯酶(AChE)和超氧化物歧化酶(SOD)活性的影响.结果表明,1)暴露3d后氧化型染发剂对沙蚕的半数致死浓度(LC50)为1849.6mg·L-1;2)沙蚕体内AChE和SOD活性受到氧化型染发剂暴露浓度的显著影响:暴露3d后,随暴露浓度的升高(0～320mg·L-1),AChE和SOD活性均呈先被诱导后逐渐下降的变化趋势;3)沙蚕体内AChE和SOD活性也受到暴露时间的显著影响:40mg·L-1浓度下,随暴露时间的延长(0～10d),SOD活性呈先下降又缓慢上升的趋势,而AChE活性变化没有显著规律;4)通过比较发现,相对于AChE,SOD的活性变化更能反映氧化型染发剂对沙蚕的毒性作用.

关键词(KeyWords)： 双齿围沙蚕;药物及个人护理用品污染物(PPCPs);氧化型染发剂;乙酰胆碱酯酶(AChE);超氧化物歧化酶(SOD)

Abstract:

Keywords:

基金项目(Foundation): 高等学校科技创新工程重大项目培育资金项目(No.707011);; 国家自然科学基金项目(No.20777040)

作者(Author): 张宁;周启星;李婷;罗义;

Email:

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