Accumulation of Cadmium Acute Exposure in the Tissues of Freshwater Crab Sinopotamon henanense

Freshwater crab,Sinopotamon henanense,were acutly exposed to the waterborne Cd2+ and the Cd2+ levels were examined.The crabs were divided into three treated groups and one control.The samples were exposed to the Cd2+ solution for 1 day,3 days and 5 days,then were dissected lively.Cadmium accumulation in gills,hepatopancreas,muscle and ovary were examined with flame atomic absorption spectrophotometry method.The results showed that Cd2+ was selectively accumulated in different organs.The accumulation of each organ decreased in turn:gillhepatopancreamuscle ovary.The bioaccumulation of Cd2+ in S.henanense had the concentration-effect relationship,ie,the more the concentration increased,the more the bioaccumulation was.But the different time-effect relationships about the bioaccumulation of the S.henanense were found because of the different organs.