Georgraphical distribution and accmulation features of organochlorine residues in bivalves from coastal areas of South Korea

摘要

As a part of Mussel Watch Program in Korea, the contamination levels and accumulation features of polychlorinated biphenyls (PCBs)and organochlorine pesticides(OCPs)were assessed for 82 bivalve samples collected from 66 sites along the entire coast of Korea. The dry weight basedΣPCBs andΣOCPs ranged from 4.4 ng g~-1 to 422.0 ng g~-1(geometric mean = 36.9 ng g~-1)and From 9.95 ng g~-1 to 131.37(34.88)ng g~-1, respectively. PCB was predominant in Korea coast, followed by DDTs, HCHs, and Chlordanes. From the observed log normal distribution of PCB and each OCP, low-and high-levels were defined as geometric mean ±S.D., respectively.