Sources and distribution of polychlorinated dibenzo-p-Dioxins and dibenzofurans in sediments from masan bay, korea

摘要

Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDDs/DFs)were measured in sediments collected from Masan Bay, Korea. Almost al tetra- through octachlorinated PCDDs/DFs were identified, including the 17 2, 3, 7, 8-substituted PCDDs/ DFs. Total concentrations of PCDDs/DFs in sediments ranged from 12 to 6,493 pg/g dry weight. Concentrations of 2,3,7,8- Tetrachlorinated dibenzo-p-dioxin(TeCDD) equivalents(TEQs) in sediments estimated based on I-TEFs were in the range of 1 to 76 pg/g dry weight. Total concentrations of PCDDs/DFs in Masan Bay sediments were comparable to those reported for the Rhine and Humber Rivers on the North Sea, the Housatonic River in the United States, and some rivers and lakes in Japan and the United Kingdom.