INVESTIGATION OF THE BEHAVIOR OF PERSISTENT ORGANIC POLLUTANTS IN JAPAN SEA Masahiro TSURUKAWA 1, Motoharu SUZUKI2, Sachiko ABE 3, Toshihiro OKUNO1, Syusuke TAKEMINE1, Chisato MATSUMURA1, Takeshi NAKANO1, Masayuki KUNUGI4 1 Hyogo Prefectural Institute of Environmental Sciences , 2 Kobe University, 3 Hyogo Environmental Advancement Association, 4 Tokyo University of Science

Sampling amount 50L （0.5 L/min） Sampling method Sampling amount 50L （0.5 L/min） ASKA-Ⅱ Glass fiber filter paper （GC-50H） Air sampling Seawater sampling Adsorbent column (PUF+ACF×3) Glass fiber filter paper（GB- 100R）＋adsorbent column Total amount 108 m3　 （ 300 L/min，6hr）

HCHｓ Relatively high in the north of Japan Sea ・Isomer pattern and concentration level differ depending on each ocean area (β>α>γ in the Pacific Ocean , α>>γ>β in the Atlantic Ocean） 2009’s survey Dumping zone of Korea Prior suvey （2004～2007）

Distribution of HCHs concentration in surface sea water (2010) Ave. 2300

Southwest Sakhalin Downstream site of Chang Jiang Relationships between α/γ-HCH ratio and the latitude of sampling points

EF value of HCH（2005-2010） Downstream site of Chang Jiang Southwest Sakhalin