Instrumental and bioanalytical measures of dioxin-like compounds and activities in sediments of the Pohang Area, Korea
- Authors
- 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.
- Issue Date
- 1-Feb-2014
- Publisher
- Elsevier BV
- Keywords
- Aryl hydrocarbon receptor (AhR); Dioxin; In vitro bioassay; Potency balance; Sediment; Steel industry
- Citation
- Science of the Total Environment, v.470, pp 1517 - 1525
- Pages
- 9
- Journal Title
- Science of the Total Environment
- Volume
- 470
- Start Page
- 1517
- End Page
- 1525
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/12423
- DOI
- 10.1016/j.scitotenv.2013.06.112
- ISSN
- 0048-9697
1879-1026
- 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. (C) 2013 Elsevier B.V. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Natural Sciences > Department of Environmental Health Science > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/12423)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.