Bioaccumulation of mercury in Anodonta from the important estuary wetlands in Chaohu Lake
The content and the space distribution of mercury in Anodonta, a representative freshwater shellfish from the main estuary wetlands in Chaohu Lake , were investigated in this study .The results showed that the sediments from the estuary wetlands had been af-fected by mercury pollution .Especially the pollution in estuary wetlands of Shiwuli River and Nanfei River was most serious .The accu-mulation of mercury and methyl mercury in Anodonta was obvious and the contents of them were significantly correlated with the con -tents in sediments .The freshwater shellfish Anodonta was used as an indicator for monitoring the mercury pollution in the estuary wet-land.The accumulation of mercury in various tissues had obvious selectivity ( mantle>guts>gill and muscle ) .The shellfish evalua-tion results showed that the contents of mercury and methyl mercury in Anodonta were lower than the limited standards and had a lower risk for eating .Anodonta in estuary wetlands should be divided into the conservation areas for ecological protection and resource utiliza -tion.
NETL
NSTL
万方数据
维普
