Ecological and human health risk from polychlorinated biphenyls and organochlorine pesticides in bivalves of Cheonsu Bay, Korea

  • Choi, Jin Young (Korea Institute of Ocean Science and Technology) ;
  • Yang, Dong Beom (Korea Institute of Ocean Science and Technology) ;
  • Hong, Gi Hoon (Korea Institute of Ocean Science and Technology) ;
  • Kim, Kyoungrean (Korea Institute of Ocean Science and Technology) ;
  • Shin, Kyung-Hoon (Department of Marine Sciences and Convergent Technology, College of Science and Technology, Hanyang University)
  • Received : 2016.01.14
  • Accepted : 2016.07.04
  • Published : 2016.12.30


Cheonsu Bay, one of the most important in Korea as a coastal fishery is a semi-enclosed bay that is surrounded by large farmlands and industrial areas. This coastal environment has been affected by anthropogenic pollutants, such as polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs). The objectives of this study were to investigate the distribution of PCBs and OCPs in sediment, Manila clams, and mussels from Cheonsu Bay; the accumulation pattern of these chemicals in these bivalves in relation to seasonal changes; and the ecological risk from sediments and the risk to the Korean population from the consumption of these bivalves. The levels of ${\Sigma}PCBs$, ${\Sigma}DDT$, and ${\Sigma}HCHs$ were 69.3-109, 40.3-49.3 and 6.25-17.8 ng/g lipid in Manila clams, and 70.6-159, 38.6-102 and 9.00-13.5 ng/g lipid in Mussels. Significant seasonal variations in PCBs and OCPs concentrations were observed in the two bivalves, suggesting that the accumulation of PCBs and OCPs in these species is related to their spawning times. The dietary intake of these two bivalves and the resulting lifetime cancer risk (LCR) and non-cancer risk were calculated for the human population. The consumption of these bivalves seemed to be safe in relation to human health with negligible LCR and non-cancer risk.


Bio-accumulation;Ecological risk assessment;Human health risk assessment;Marine bivalves;Persistent organic pollutants (POPS)


Grant : Development of sustainable remediation technology for marine contaminated sediments

Supported by : Korea Institute of Ocean Science and Technology


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