The key toxicity components in the mixture metals is zinc, lead, cadimum, the magnitude sequence of the toxicity of the components was Pb>Zn Cd in the liver, that sequence in the brian was Pb>Cd>Zn.

• 混合重金属中的主要毒性成分是Zn、Pb和Cd离子 ,混合重金属对鱼脑组织的毒性大小顺序是Pb>Cd >Zn ,对肝脏DNA的毒性顺序为Pb >Zn >Cd;