Assessment on the Contents of the Heavy Metals in Sea Water, Surface Sediments and Cultured Shellfishes from Shenhu Bay, Fujian Province

Besed on the investigate data of fishery environment obtained from the Shenhu Bay waters, Fujian Province in May and September 1998, the concentrations and distributions of heavy metals in sea water, surface sediments , Ostred plicatula and Ruditapes philippinarum were analyzed. The results could be summarized as follows: The contents of Cu,Pb,Cd,Zn,Hg in sea water at the Shenhu Bay are all below the fisheries water quality standard, but the sediments are mostly polluted with Pb and Zn. Contents of Cu,Pb,Cd,Zn in sea water and surface sediments from neritic water of Shenhu Bay was much higher than that in centre water of Bay, it was much higher the Bay head water than that in Bay estuary water. The contents of 1 Ig from Bay South water was much higher then that in Bay North water. In addition, according to the values of the pollution evaluation Standard for Marine Organisms set by the Technical Group of National Coastal Zone Pollution Comprehensive Survey of China, the pollution level of the two species of shellfishes by heavy metals has been assessed. The results show that the concentrations of heavy metals in the shellfishes at the Shenhu Bay are all below the standards,