plSSN : 0374-8111 | elSSN : 2287-8815
plSSN : 0374-8111 | elSSN : 2287-8815
plSSN : 0374-8111elSSN : 2287-8815
Trace Metal Distributions and Accumulations in Seawater, Marine Sediments and Organisms from Coastal Aquaculture Areas of Korea
최민규*·황동운·임재현·이가람·나수진
국립수산과학원 기후환경연구부 해양환경연구과
This study comprehensively assessed the distribution, contamination status, and ecological risks of trace metals in seawater, sediments, and marine organisms from Korean coastal aquaculture areas. Trace metal concentrations in sediments followed the order Zn>Cr>Pb>Cu>As>Cd>Hg, with relatively higher levels of Zn, Cu, and Cd on the southeastern coast and Pb, As, and Hg on the mid-eastern coast. The pollution load index (PLI) and ecological risk indices (ERI) exhibited high values at some stations along the southeastern and mid-eastern coasts. Compared with the domestic sediment quality guidelines (TEL), 95-100% of the samples satisfied the criteria for individual metals. Trace metal concentrations in seawater satisfied all national ecological protection standards. In marine organisms, Zn, Cu, and As are predominant and species-specific bioaccumulation patterns have been observed. The bioconcentration (BCF) and biosediment accumulation factors (BSAF) revealed high accumulation tendencies for Zn, Cd, and Cu. Notably, some species showed substantial Cd and Zn bioaccumulation.
Trace metals, Seawater, Marine sediments, Bioconcentration factor, Biota-sediment accumulation factor