Land-ocean interactions in the coastal zone

한국해양연구

Distribution and Behavior of Nutrients and Chorophyll in the lower stream of Han River

한국해양연구

Polluton reducing strategies for the Coastal Yellow Sea - present status and perspectives- Korea

Various mitigation measures are being taken or under consideration for environmental issues of great concern.These comprises integrated management of coastal zone, improvement of environmental assessment technologies and diverse prevention measures for red tide outbreaks. The outline of coastal zone management is to achieve sustainable development and environmental protection through reasonable management of coastal resources and space. Principles of Ecosystem Management, precautionary approach, integrated management and building partnerships are other major management princilpes.1

Introduction on seawater quality criteria of Korea

Korean seawater quality standards define the goals for a waterbody by designating its uses and setting criteria to protect those uses. Seawater quality criteria contain information on the allowable concentrations of specific chemicals or levels of parameters in seawater to protect the marine environment for the following use designations : Class 1 (bathing, habitats and aquaculture for sensitive marine species). Class 2 (leisure, habitats and aquaculture for other fishery resources) and Class 3 (Industrial use). Korean seawater quality criteria for human health suggest the maximum levels of 19 chemical parameters to reduce the risk to humans from these sources. The water quality criteria for rivers and lakes are maintained separately by the Ministry of the Environment.1

Persistent Toxic Substances (PTS) in surface sediments and water column from Lake Shihwa and the coastal area of Kyeonggi Bay, Korea

Surface sediments, suspended particulate matters (SPM) and surface waters were collected from Lake Shihwa and coastal areas of Kyeonggi Bay, Korea and were analyzed for polycyclic aromatic hydrocarbon (PAHs), polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCP). Relatively high concentrations of PAHs were found in the sediment samples from S1 to S3, which were located near harbor areas. Combustion of fossil fuel was thought to be the main sources of PAHs in the sediments from Lake Shihwa and coastal areas of Kyeonggi Bay. Total PAH concentrations in the sediments showed a significant positive correlations with total organic carbon (TOC), while no correlations could be found between the concentrations of PAHs and TOC in surface water. It was shown that resuspension of the sediments and flushing effects by tidal current can be an important factor to control contaminants levels in the coastal areas of Kyeonggi Bay. PAHs, PCBs and OCP concentrations in sediments from this study area were relative lower than other industrialized coastal area in Korea. PCA analysis of PCB concentrations in the sediments showed a discriminate congener specific compositional difference among the sampling sites.1

LDH/AChE and MDA/SOD Ratios of Flounder (Paralichthys olivaceus) asBiomarkers of Coastal Pollution on the Wstern Coast of Korea

22othe

넙치의 효소분석으로 얻어진 생화학지표에 의한 해양오염 진단법

발명요약

PCBs and OCPs residue in sediments and in Manila clams from the Mid-western coast of Korea: Distribution and Bioaccumulation

The distribution and bioaccumulation features of PCBs, DDTs and HCHs were investigated in sediment and Manila clam (Ruditapes philippinarum) collected from the Mid-western coast of Korea. The concentration of ΣPCBs, ΣDDTs and ΣHCHs were measured in the range of 0.57 - 1.72, 0.16 - 1.56 and 0.09 - 0.30 ng/g dw in sediment samples. In this study, the levels of these compounds were relatively lower than those from other contaminated areas. The spatial distribution of these chemicals seemed closely related to anthropogenic activities. The concentrations of ΣPCBs and ΣDDTs in sediment showed significant relationship with the concentrations of ΣPCBs and ΣDDTs in clams. The significant correlation was observed between log BSAF in clams and log Kow for each PCB congeners and DDT metabolites. These findings support that the levels of PCBs and DDTs, very hydrophobic chemicals, in clam tissue reflect the sediment pollution by PCBs and DDTs through biomagnification and bioaccumulation.ere measured in the range of 0.57 - 1.72, 0.16 - 1.56 and 0.09 - 0.30 ng/g dw in sediment samples. In this study, the levels of these compounds were relatively lower than those from other contaminated areas. The spatial distribution of these chemicals seemed closely related to anthropogenic activities. The concentrations of ΣPCBs and ΣDDTs in sediment showed significant relationship with the concentrations of ΣPCBs and ΣDDTs in clams. The significant correlation was observed between log BSAF in clams and log Kow for each PCB congeners and DDT metabolites. These findings support that the levels of PCBs and DDTs, very hydrophobic chemicals, in clam tissue reflect the sediment pollution by PCBs and DDTs through biomagnification and bioaccumulation.1

Distribution of OPPs and OCPs in the Gomso Bay

2001년 하계에 곰소만내 유기인계 농약과 유기염소계 화합물의 분포를 조사하였다. 표층해수중 IBP는 모든 해역에서 광범위하게 분포하였다. Diazinon, Chlorpyrifos는 다소 낮은 농도를 보였지만 내만에서 검출되었다. 다른 유기인계 농약(Disulfoton, Parathion methyl, Prothiofos, EDDP)은 일반적으로 검출한계 이하였다. 곰소만내 표층 퇴적물의 PCBs, DDTs와 HCHs 농도는 각각 nd-1.88ng/g, nd-0.22ng/g, 그리고 nd-0.30ng/g이었다. 표층퇴적물의 유기염소계 화합물 농도는 전반적으로 낮은 수치를 나타내었다. PCB 화합물의 분포경향은 만의 안쪽에서 상대저긍로 높은 분포를 나타내었다. PCB congener의 분포경향은 Tri-, Tetra-PCBs가 우세한것으로 나타났다. DDTs와 HCHs의 공간적인 분포는 전반저긍로 비슷한 농도를 보였다. DDT와 HCH 화합물의 조성비는 각각 DDE와 β-HCH가 높게 분포하였다. 따라서 곰소만의 유기염소계농약의 유입 가능성은 적은 것으로 생각되어진다.2

The distributional characteristics of organochlorines in Manila clams

A 35 clam samples were collected along coastal marine areas along the Western coast of Korean Peninsula in order to obtain a present level of organochlorine compounds of HCHs, DDTs, PCB during 1999-2001. The PCBs concentrations in clams were in the range ND-13.97ng/gDW(m=3.02ng/gDW) and the concentrations of PCB153 accounted for 24% total PCB concentration. The DDTs concentrations ranged 1.26-18.63ng/gDW(m=3.02ng/gDW) in clams. o,p'-DDE, p,p'-DDE accounted for 41, 25% of toal DDTs. B-HCH was the most abundant HCH isomers in clams. The level of contamination of HCHz, DDTs and PCBs in clams in the western coast of Korea were comparable to those in relatively unpolluted areas of the world.2