Abstract
From April to October 2012, eight species of bivalves were selected and 12 samples were chosen from each species of bivalve from by random sampling method in Dandong market. The heavy metal contents of Pb, Cd, Cr, As and Hg in the edible parts of the bivalves were determined by using incomplete digestion - AAS method, and the assessment on the pollution situation of the eight species of bivalves was made by using the single factor index method. The results showed that arcasubcrenata was slightly polluted by As, and the pollution index was 0.51, and the other heavy metal contents in bivalves were lower than the pollution limit in the national standard of food safety. Therefore, the heavy metal accumulation ability in arca subcrenata was higher than in the other bivalves.
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