重金属Pb和Cu对Cd在泥鳅（Misgurnus anguillicaudatus）组织器官蓄积的影响

摘要

Using the hydrostatic biological testing method, the interaction effects of lead （0.5mg/L） and copper （0.1mg/L） ions on cadmium（0.05mg/L） accumulation in the tissues and organs of Misgurnus anguillicaudatus were studied. The results showed that the effects of cadmium accumulation depended on the type and number of heavy metals, exposure time and tissue types. Cadmium accumulation in the tissues and organs was in the order of liver kidney muscle. In the tissues and organs, cadmium accumulation was not significantly affected by the presence of either metal （P0.05）, but by the presence of both metals （P0.05）. Furthermore, cadmium accumulation in liver and kidney was significantly enhanced （P0.05） by the presence of both metals, and extremely significant difference （P0.01）, whereas such accumulation in muscle was not affected （P0.05）.%采用静水生物测试方法,研究了Pb（0.5mg/L）和Cu（0.1mg/L）的相互作用对Cd（0.05mg/L）在泥鳅组织器官中蓄积的影响。结果表明,重金属离子相互作用对Cd在泥鳅组织器官中蓄积的影响与重金属的种类、数量、染毒时间及组织器官性质有关,Cd在泥鳅组织器官中的蓄积顺序为肝〉肾〉肌肉。研究发现,Cd在组织器官中的蓄积受单一重金属的影响不显著（P〉0.05）,而与Pb、Cu的联合胁迫有关。随着Pb、Cu的混合添加和时间的延续,其相互作用对肝、肾中Cd的蓄积影响逐渐变得显著（P〈0.05）和极显著（P