摘要
采用单因子急性毒性实验研究Pb^(2+)、Cu^(2+)和Cd^(2+)对太平洋牡蛎(Crassostrea gigas)的96 h半数致死浓度(96 h LC 50)及急性毒性效应。实验结果表明,Pb^(2+)、Cu^(2+)和Cd^(2+)对太平洋牡蛎96 h LC 50分别为22.99、21.75 mg/L和21.35 mg/L,急性毒性作用大小的顺序为:Cd^(2+)>Cu^(2+)>Pb^(2+)。Pb^(2+)、Cu^(2+)和Cd^(2+)对太平洋牡蛎的安全浓度(SC)分别为:2.30、2.18 mg/L和2.14 mg/L。总体而言,与Cu^(2+)和Pb^(2+)相比,太平洋牡蛎对Cd^(2+)毒性的耐受性较低。
In the present study,the 50%lethal concentration of copper(Cu^(2+)),lead(Pb^(2+))and cadmium(Cd^(2+))at 96 h(96 h LC 50)to Crassostrea gigas and the effect of acute toxicity resulting from these heavy metals were evaluated by the single factor test.Our results showed that the 96 h LC 50 of Pb^(2+),Cu^(2+) and Cd^(2+) were 22.99 mg/L,21.75 mg/L and 21.35 mg/L,respectively.The toxicity of these heavy metals were Cd^(2+)>Cu^(2+)>Pb^(2+).The safety concentrations(SC)were 2.30 mg/L for Pb^(2+),2.18 mg/L for Cu^(2+) and 2.14 mg/L for Cd^(2+),respectively.Collectively,the tolerance of Crassostrea gigas to Cd^(2+) was relatively low compared to the tolerance to Pb^(2+) and Cu^(2+).
作者
刘伟
鞠青
刘星辰
LIU Wei;JU Qing;LIU Xing chen(Shandong Provincial Qingdao Eco-environment Monitoring Center,Qingdao 266000,China;School of Electromechanical and Automotive Engineering,Yantai University,Yantai 264005,China)
