Toxic Effects of Cd^(2+),Pb^(2+) and Hg^(2+) on Colpoda inflata  

Cd^(2+)、Pb^(2+)、Hg^(2+)对膨胀肾形虫的毒性效应(英文)

作　　者：邹涛[1] 刘先利[1] 黄卫东[1] 靖金球[1] 吕梦圆 

机构地区：[1]湖北理工学院,湖北黄石435003

出　　处：《Agricultural Science & Technology》2014年第6期1046-1050,共5页农业科学与技术（英文版）

基　　金：Supported by the Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation;the Hubei Provincial Department of Education(B2013063)~~

摘　　要：The toxic effects of heavy metal ions, Hg2＋, Pb2＋ and Cd2＋ on Colpoda inflata were studied, finding that the growth of C. inflata had been inhibited signifi- cantly under different concentrations of heavy metal ions. The acute toxicities of Cd2＋, Pb2＋ and Hg2＋ to C. inflata went in the order of Hg2＋, Pb2＋, Cd2＋. The results of joint toxicity showed that the types and magnitudes of joint actions were different at different solution compositions. The joint toxicity of Cd2＋ and Pb2＋ at the concentration proportion of 1：1 and toxic proportion of 1：1 were all antagonism. At the concentration proportion of 1：1, the joint toxicity of Pb2＋ and Hg2＋ was synergistic, and it changed from antagonism to synergistic at the toxic proportion of 1：1. The joint toxicily of Hg2. and Cd2＋ at the concentration proportion of 1：1 was synergistic, and it was antagonist at toxic proportion of 1：1. At the concentration proportion of 1：1：1, the joint toxicity of Cd2＋, Pb2. and Hg2＋ was synergistic, and it changed from antago- nism to synergistic under toxicity proportion of 1：1：1.研究了重金属Cd2+、Hg2+和Pb2+对膨胀肾形虫(Colpoda inflata)的毒性效应。在3种重金属离子作用下,膨胀肾形虫的生长受到明显的抑制,对膨胀肾形虫的毒性从大到小依次为Hg2+、Pb2+、Cd2+。联合毒性实验结果表明,3种重金属离子的不同配比下,联合作用类型和强度有一定的差异。Cd2+-Pb2+在浓度比1∶1和毒性比1∶1时均为拮抗作用;Pb2+-Hg2+在浓度比1∶1时为协调作用,毒性比1∶1时先表现为拮抗作用后表现为协同作用;Hg2+-Cd2+在浓度比1∶1时为协同作用,毒性比1∶1时为拮抗作用;Cd2+-Pb2+-Hg2+在浓度比1∶1∶1时均为协同作用,毒性比1∶1∶1时由拮抗作用逐渐转为协同作用。

关 键 词：Heavy metal ions Colpoda inflate Acute toxicity Joint toxicity 

分 类 号：X174[环境科学与工程—环境科学]