| The bioaccumulation characteristics of heavy metals（Al, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Mo, Ag, Cd, Ba, Tl, and Pb） in bivalve Anodonta woodiana from Nanquan Aquatic Base of Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences（without obvious exogenous contamination of heavy metal）, Meiliang Bay of Taihu Lake（suffered relatively serious pollution） and Cibihu Lake in Yunnan Province（a very clean plateau lake） were investigated by an Agilent 7500ce inductively coupled plasma mass spectrometry（ICP-MS）. The results of present study showed that concentrations of Al, Cr, Mn, Fe, Ni, Cu, Zn, As, Cd and Ba in cultured mussels of Nanquan Aquatic Base were significantly lower than those of wild mussels from Meiliang Bay（P<0.05）. Moreover, concentrations of Al, Mn, Ni, Cu, Zn, As, Cd, Ba and Pb of wild mussels from Cibihu Lake were significantly lower than those of wild mussels from Meiliang Bay（P<0.05）, while concentrations of Mo and Tl in the former were significantly higher than the latter（P<0.05）. Additionally, lower concentrations of Cr, Fe, Mo and Tl could be found in cultured mussels than those of wild ones from Cibihu Lake（P<0.05）. However, concentrations of Cu, As and Pb in the former were significantly higher than the latter（P<0.05）. Similar metal pollution indexes（MPI） were observed between the mussels from Nanquan Aquatic Base（1.8） and Cibihu Lake（1.0）, while both indexes were obviously lower than that of the mussels from Meiliang Bay（11.1）. |
