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[D-2.4 Study of Organic Pollutants using A Newly Developed Sampling System in the East China Sea]

[Contact Person]

Yoko Kiyomoto
Seikai National Fisheries Research Institute
Fisheries Agency
49 Kokubu-machi, Nagasaki 850-0951, Japan
Tel:+81-95-822-8158 Fax:+81-95-821-4494
E-mail:ykiyo@snf.affrc.go.jp

[Total Budget for FY1996-FY1998]

12,043,000 Yen (FY1998;6,020,000 Yen)

[Abstract]

Distribution of organic pollutants in the surface water of the East China Sea was studied using a newly-designed sampling device during May, 1996 and July- August, 1997. As a result, several harmful materials such as hexachlorocyclohexane (HCHs), chlordane and nonachlore were detected in the sea water. Although the concentration of the organic pollutants was low in our sampling area (central shelf to the continental slope area), HCHs showed a systematic increase from the continental slope (Kuroshio water) towards the central shelf (Continental Shelf Water indicated by having low salinity). This suggests that the river discharge was one of the sources of the organic pollutants in the East China Sea.

[Key Words]

East China Sea, Organic Pollutants, Clean Sampling System, Water Type