天然水体中铜的形态及其对Q67淡水发光菌的毒性作用

被引:4
作者
黄圣彪
王子健
机构
[1] 中国科学院生态环境研究中心环境水化学国家重点实验室
[2] 中国科学院生态环境研究中心环境水化学国家重点实验室 北京
[3] 北京
关键词
铜; 络合容量; DOC; 毒性;
D O I
10.13198/j.res.2003.02.45.huangshb.012
中图分类号
X832 [水质监测];
学科分类号
0804 ; 082803 ;
摘要
通过铜加标实验,运用两步酸化阳极溶出伏安法(DAM-DPASV)得到官厅水库各水样对铜的络合容量,同时测定了水样在铜加标前后对Q67淡水发光菌的96h急性毒性。官厅水库各水样对铜的络合容量为26~128μg L,与水样中DOC的含量成正比,络合容量随DOC含量的增加而升高。铜对Q67淡水发光菌的毒性随着水样对铜络合容量的增加而降低,相对于用总铜浓度表示的EC50而言,由电极有效态铜浓度(无机铜浓度)表示的EC50能够更好地预测天然水体中铜对Q67淡水发光菌的毒性。
引用
收藏
页码:43 / 46
页数:4
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