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环境化学  2015 

壬基酚对Americamysisbahia种群安全暴露基准浓度的确定

Keywords: 种群,模型选择基准,安全暴露基准浓度,壬基酚

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Abstract:

采用正态分布累积函数和幂函数,分别建立了壬基酚(NP)对Americamysisbahia多代种群暴露影响的浓度-种群周限增长率(λ)和浓度-种群内禀增长率(r)曲线,根据各自拟合的模型选择基准(MSC)值选择幂函数浓度-r曲线来估算种群安全暴露浓度.使用浓度-r曲线的浓度(r=0)的95%置信区间下限作为种群水平上的安全暴露基准浓度,确定了NP对Americamysisbahia种群多代安全暴露浓度(1.87μg·l-1).这个基准浓度要低于多代暴露实验所获得的NP的个体水平上的慢性繁殖毒性的安全浓度(12μg·l-1).

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