title: AhR-mediated potency of sediments and soils in estuarine and coastal areas of the Yellow Sea region: a comparison between Korea and China.
abstract: 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.
authors.affiliation: Division of Environmental Science and Ecological Engineering, Korea University, Seoul, Republic of Korea.
authors.forename: Seongjin
authors.initials: S
authors.lastname: Hong
authors.forename: Jong Seong
authors.initials: JS
authors.lastname: Khim
authors.forename: Jonathan E
authors.initials: JE
authors.lastname: Naile
authors.forename: Jinsoon
authors.initials: J
authors.lastname: Park
authors.forename: Bong-Oh
authors.initials: BO
authors.lastname: Kwon
authors.forename: Tieyu
authors.initials: T
authors.lastname: Wang
authors.forename: Yonglong
authors.initials: Y
authors.lastname: Lu
authors.forename: Won Joon
authors.initials: WJ
authors.lastname: Shim
authors.forename: Paul D
authors.initials: PD
authors.lastname: Jones
authors.forename: John P
authors.initials: JP
authors.lastname: Giesy
mesh_terms: D002681:China; D004784:Environmental Monitoring; D004785:Environmental Pollutants / Q000032:analysis* / Q000633:toxicity; D004787:Environmental Pollution / Q000706:statistics & numerical data; D063366:Estuaries; D015870:Gene Expression; D019015:Geologic Sediments / Q000737:chemistry; D000072317:Polychlorinated Dibenzodioxins / Q000032:analysis / Q000633:toxicity; D018336:Receptors, Aryl Hydrocarbon / Q000032:analysis*; D056910:Republic of Korea; D012987:Soil / Q000737:chemistry
chemical_list: D004785:Environmental Pollutants; D000072317:Polychlorinated Dibenzodioxins; D018336:Receptors, Aryl Hydrocarbon; D012987:Soil