Instrumental and bioanalytical measures of dioxin-like compounds and activities in sediments of the Pohang Area, Korea

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

16 Scopus Citations
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Author(s)

  • Seongjin Hong
  • Jong Seong Khim
  • Jinsoon Park
  • Sunmi Kim
  • Sangwoo Lee
  • And 7 others
  • Kyungho Choi
  • Chul-Su Kim
  • Sung-Deuk Choi
  • Jeongim Park
  • Jongseong Ryu
  • Paul D. Jones
  • John P. Giesy

Detail(s)

Original languageEnglish
Pages (from-to)1517-1525
Journal / PublicationScience of the Total Environment
Volume470-471
Publication statusPublished - 1 Feb 2014

Abstract

Pohang is a mid-sized city in which Korea's largest manufacturer of steel is located. The Hyeongsan River, which runs through Pohang and empties into Yeongil Bay, is therefore expected to be affected by various municipal and industrial inputs. In order to characterize aryl hydrocarbon receptor (AhR)-mediated activities in sediments from the Pohang area, a total of eight locations along the Hyeongsan River were chosen and 16 sediment samples were collected during two sampling campaigns in 2010. Organic extracts of sediments were characterized by both quantitative chemical analyses of dioxin-like chemicals and the in vitro H4IIE. luc bioassay. Significant dioxin-like activities were observed in sediments from industrial and municipal areas, which indicates that most of the dioxin-like chemicals were associated with surrounding anthropogenic sources. In general, responses of the H4IIE. luc assay were significantly correlated with concentrations of target compounds including dioxins, furans, co-planar PCBs, and dioxin-like PAHs. A potency balance analysis indicated that instrumentally derived TCDD equivalents (TEQs) explained about 77% of the bioassay-derived TCDD equivalents (TCDD-EQs). Among the target chemicals measured, certain penta-chlorinated dioxin and furan compounds accounted for the majority of dioxin-like activities associated with sediments. Compositional analysis of target chemicals the sources of such dioxin-like activities were mainly derived from the local activities such as the iron and steel industries. Concentrations and activities of AhR agonists were similar to what was measured approximately 10. years ago. Thus, while AhR agonists seem to be persistent in sediments there seem to have been no large increases in these chemicals in the Pohang area. © 2013 Elsevier B.V.

Research Area(s)

  • Aryl hydrocarbon receptor (AhR), Dioxin, In vitro bioassay, Potency balance, Sediment, Steel industry

Citation Format(s)

Instrumental and bioanalytical measures of dioxin-like compounds and activities in sediments of the Pohang Area, Korea. / Hong, Seongjin; Khim, Jong Seong; Park, Jinsoon; Kim, Sunmi; Lee, Sangwoo; Choi, Kyungho; Kim, Chul-Su; Choi, Sung-Deuk; Park, Jeongim; Ryu, Jongseong; Jones, Paul D.; Giesy, John P.

In: Science of the Total Environment, Vol. 470-471, 01.02.2014, p. 1517-1525.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review