李娟英;李振华;崔昱;胡谦;陈美娜;郑奕兴;

• 1:水产动物遗传育种中心上海市协同创新中心

摘要(Abstract)：

菊酯类农药已广泛用于农用、卫生、渔业等领域,因高疏水性累积于沉积物中的此类污染物的生物有效性评价对环境风险研究具有重要意义。采用PDMS(聚二甲基硅氧烷)高聚物作为固相微萃取材料,基于热力学平衡微损耗性方法测定了沉积物孔隙水中高效氯氟氰菊酯、联苯菊酯、氯菊酯和甲氰菊酯的自由溶解态浓度(Cfree);同时将PDMS上菊酯类农药的浓度与菲律宾蛤仔体内生物累积浓度的相关性进行了比较研究。结果表明,该方法可以准确测定菊酯类农药在沉积物孔隙水中的Cfree(23.3~255 ng·L-1)并用于评价此类物质(菊酯类农药)的生物有效性;菲律宾蛤仔对四种菊酯类农药的富集系数(BCF)为27.8~301,相对较小;菊酯类农药在PDMS上的浓度和菲律宾蛤仔体内的浓度满足lg Cb,lip=11.64lg CPDMS-51.29(R2=0.980)的定量关系,相关性极显著(P=0.009)。但生物—沉积物富集系数(BSAF)和PDMS-沉积物富集系数(PSAF)的分析比较发现,基于PDMS和生物体内菊酯浓度极显著相关的仿生应用还有待污染物在菲律宾蛤仔体内生物转化数据的进一步补充和校正。

关键词(KeyWords)： 菊酯类农药;沉积物;生物有效性;聚二甲基硅氧烷;菲律宾蛤仔

Abstract:

Keywords:

基金项目(Foundation): 上海海洋大学科技发展专项资助(A2-0209-14-200055);; 农业部淡水水产种质资源重点实验室开放课题

作者(Author): 李娟英;李振华;崔昱;胡谦;陈美娜;郑奕兴;

Email:

DOI:

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