title: A congener-specific survey for polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) contamination in Masan Bay, Korea.
abstract: A congener-specific determination of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) in 21 surface sediments from Masan Bay, Korea revealed that the most toxic 2,3,7,8-tetrachlorodibenzo-p-dioxin (2,3,7,8-TCDD) was detected in 76% of the samples and 2,3,7,8-tetrachlorodibenzofuran (2,3,7,8-TCDF) in 100% of the samples analyzed. The concentration range of SigmaPCDDs and SigmaPCDFs are: 230-6900; 120-16700pgg(-1) dry mass respectively. WHO Toxic Equivalents (WHO-TEQ) in Masan Bay sediment ranged from 0.53 to 99ng TEQkg(-1)d.m. for PCDDs; 4 to 1300ngTEQkg(-1)d.m. for PCDFs. In comparison with an earlier survey, the concentrations of dioxins and furans have more than doubled and the SigmaWHO-TEQ values have increased 15 times within a decade. Both point and non-point sources of pollution are suspected, especially, local sewage treatment plants are found to contribute.
authors.affiliation: Korea Ocean Research and Development Institute, South Sea Institute, 391 Jangbuk-Ri, Jangmok-Myon, Geoje-Shi, Republic of Korea.
authors.forename: Narayanan
authors.initials: N
authors.lastname: Kannan
authors.forename: Sang
authors.initials: S
authors.lastname: Hee Hong
authors.forename: Won Joon
authors.initials: WJ
authors.lastname: Shim
authors.forename: Un
authors.initials: U
authors.lastname: Hyuk Yim
mesh_terms: D001572:Benzofurans / Q000032:analysis* / Q000737:chemistry*; D000072338:Dibenzofurans, Polychlorinated; D007723:Korea; D009792:Oceans and Seas; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis / Q000737:chemistry; D012623:Seawater / Q000032:analysis / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry; D014877:Water Pollution, Chemical / Q000032:analysis*
chemical_list: D001572:Benzofurans; D000072338:Dibenzofurans, Polychlorinated; D000072317:Polychlorinated Dibenzodioxins; D014874:Water Pollutants, Chemical