Concentration and pollution sources of lead in Ruditapes philippinarum in Dalian typical coastculture areas

In order to assess the lead pollution in Dalian typical coastculture areas and trace the pollution source, Dalian Jinshitan,Dalijia and Pikou were served as the typical monitoring area,and Ruditapes philippinarum was selected as the target shellfish. Meanwhile,the possible source of lead in R. philippinarum was traced using a stable isotope tracer technique. The results showed that the concentration of lead in seawater was below the second degree of Sea Water Quality Standard,as well as the potential ecological risk of lead in the sediment was belonged to the light degree. The content of lead in R. philippinarum was below the limit standard of pollution- free aquatic product. At the same time,the value of206Pb /207Pb in R. philippinarum was approximate to the sediment,which indicated the lead in R. philippinarum maybe came from the sediment.