| Title |
Trace Metal Concentrations and Sedimentation Rates of Kwangyang , Masan and Ulsan Bay Sediments |
| Authors |
강화성 ; 이광우 ( Hwa Seong Kang ; Kwang Woo Lee ) |
| Abstract |
In order to investigate the historical aspect of trace metal pollution, 19 surface sediment samples and 6 core samples were obtained from the coastal bays of Kwangyang, Masan and Ulsan which were known to be somewhat polluted. Eight trace metals(Cd, Cr, Co, Cu, Mn, Ni, Pb and Zn) in sediments were analysed by atomic absorption spectrophotometry and sedimentation rates were determined by the isotopic method using radioactive ^(210)Pb. The mean sedimentation rates, calculated from ^(210)Pb contents, were 0.68, 0.55 and 0.59 cm/yr for Kwangyang, Masan, and Ulsan Bay, respectively. The sediment compositions of each bays were clayey silt for Kwangyang Bay, silt and clayey silt for Masan Bay, and silt for Ulsan Bay. The concentrations of Pb, Co, Zn, Ni, Cu and Cr were relatively high in the surface sediments and gradually decreased at the 20∼30㎝ depth. |