镉对泥鳅幼鱼的急性和亚急性毒性研究  

Acute and subacute toxicity of cadium on javenile loach

作　　者：贾秀英[1] 

机构地区：[1]杭州师范学院生命科学院,杭州310036

出　　处：《环境污染与防治》2001年第5期227-228,共2页Environmental Pollution & Control

摘　　要：在实验条件下研究了镉对泥鳅幼鱼的急性和亚急性毒性。试验从刚孵出的幼鱼开始 ,采用静水换水法。亚急性试验历时 2 0 d。镉对泥鳅幼鱼 2 4、48h的 LC50 值分别为 1.2 2、0 .85 mg/L。亚急性试验中 ,镉对泥鳅幼鱼存活有明显影响的可观察效应浓度 ( L OEC)最低是 0 .16 mg/L ;根据对幼鱼现存量的影响 ,镉对泥鳅的最低可观察效应浓度为 0 .0 8mg/L ,而无可观察效应浓度( NOEC)为 0 .0 4mg/L。In this work, the acute and subacute toxicity of cadium on juvenile loach was determined in renewal test. In 24 h, 48 h, the LC\-\{50\} for juvenile loach (\%Misqurnus mizolepis\%) was 1.22, 0.85 mg/L. With regard to the subacute toxicity test, the lowest observed effect concentraction(LOEC) for cadium, at which significant effects on the survival of the loach were observed, was 0.16 mg/L. Based on the standing crop, the NOEC was 0.04 mg/L, and the LOEC was 0.08 mg/L.

关 键 词：镉 泥鳅 LOEC NOEC 幼鱼 急性毒性 亚急性毒性 水质监测 生物监测 

分 类 号：X174[环境科学与工程—环境科学]