Journal
ENVIRONMENTAL POLLUTION
Volume 171, Issue -, Pages 216-225Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2012.08.001
Keywords
H4IIE-luc; In vitro bioassay; Mass balance; West Sea; Bohai Sea; Asia
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Funding
- project entitled Development of Technology for CO2 Marine Geological Storage
- project entitled Development of Integrated Estuarine Management System
- Korean Ministry of Land, Transport, and Maritime Affairs [PM56951]
- National Science Foundation of China [41171394]
- Canada Research Chair program
- large Chair Professorship at the Department of Biology and Chemistry and Research Centre for Coastal Pollution and Conservation, City University of Hong Kong
- Einstein Professor Program of the Chinese Academy of Sciences
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Extracts of sediments (n = 45) and soils (n = 37) collected from the coast of the Yellow Sea, in Korea and China, were screened for their ability to induce dioxin-like gene expression in vitro using the H4IIE-luc, transactivation bioassay. Significant dioxin-like potency was observed except for a few soils from Korea. Concentrations of TCDD-EQ (2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents) in sediments were comparable between Korea and China, but concentrations of TCDD-EQ in soil were 2-fold greater from Korea. Mass balance analysis indicated that concentrations of TCDD-EQ were to some degree chemical- and/or matrix-dependent, but were much more site-specific. For example, the proportion of the TCDD-EQ that could be identified varied among locations, which suggests different sources. Unidentified AhR-active compounds represented a greater proportion of the TCDD-EQ in samples from Korea, which suggests that sources in Korea were more complex than those in China. Potential sources of TCDD-EQ were investigated by considering land-uses and local activities. (C) 2012 Elsevier Ltd. All rights reserved.
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