摘要
探讨了Cu、Zn、Cr、Cd四种重金属离子对罗氏沼虾仔虾的急性毒性及联合毒性作用。Cu2 + 、Zn2 + 、Cr(Ⅵ )、Cd2 + 对仔虾的 96hLC50 分别为 0 .46 2mg/L、0 .5 80mg/L、0 .114mg/L、0 .0 15mg/L ;急性毒性由强至弱依次为 :Cd2 + >Cr(Ⅵ ) >Cu2 + >Zn2 + ;Cu2 + 和Zn2 + 、Zn2 + 和Cd2 + 对罗氏沼虾仔虾的联合作用表现为拮抗 ,Cu2 + 和Cd2 + 、Cu2 + 和Cr6+ 、Zn2 + 和Cr(Ⅵ )则为协同作用。
This study deals with the acute toxicity of Cu 2+, Zn 2+, Cd 2+, Cr(Ⅵ) and joint toxicity of Cu 2+, Zn 2+, Cd 2+, Cr(Ⅵ) to M.rosenbergii. The median lethal concentrations of these four heavy metals to M.rosenbergii are 0.462mg/L, 0.580mg/L, 0.015mg/L and 0.114mg/L. The order of the toxicity of these four heavy metals is obtained as follows : Cd 2+> Cr(Ⅵ)>Cu 2+>Zn 2+; Cu 2+ and Zn 2+, Zn 2+ and Cd 2+ are antagonism; Cu 2+ and Cd 2+, Cu 2+ and Cr(Ⅵ), Zn 2+ and Cr(Ⅵ) are synergism.
出处
《上海水产大学学报》
CSCD
2002年第3期203-207,共5页
Journal of Shanghai Fisheries University
关键词
罗氏沼虾
仔虾
急性毒性
联合毒性
铜
锌
镉
铬
渔业水质标准
Macrobrachium rosenbergii postlarva
Cu 2+
Zn 2+
Cd 2+
Cr(Ⅵ)
acute toxicity
LC 50
joint toxicity
