Effect-directed analysis and mixture effects of AhR-active PAHs in crude oil and coastal sediments contaminated by the Hebei Spirit oil spill

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

44 Scopus Citations
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Author(s)

  • Seongjin Hong
  • Sangwoo Lee
  • Kyungho Choi
  • Gi Beum Kim
  • Sung Yong Ha
  • And 7 others
  • Bong-Oh Kwon
  • Jongseong Ryu
  • Un Hyuk Yim
  • Won Joon Shim
  • Jinho Jung
  • John P. Giesy
  • Jong Seong Khim

Detail(s)

Original languageEnglish
Pages (from-to)110-118
Journal / PublicationEnvironmental Pollution
Volume199
Publication statusPublished - Apr 2015

Abstract

The major AhR-active PAHs were identified in crude oil and oil-contaminated sediments by use of effect-directed analysis. As part of the study, an enhanced potency balance analysis was conducted by establishing the novel relative potency values of (alkyl)-PAHs from the H4IIE-luc bioassay. Silica gel column fractionation of crude oil resulted in greater AhR-mediated potencies in fractions of aromatics (F2) and resins (F3), and such trend was also observed for field collected sediment samples. AhR-mediated potencies of six F2 sub-fractions from HPLC indicated that the majority of F2 responses were attributable to 3-4 ring aromatics. Target PAHs including C4-phenanthrene, C1-chrysene, and C3-chrysene in sediments explained ∼18% of the bioassay-derived TCDD-EQs, however, the unknown AhR agonists and potential mixture effects remain in question. Overall, the AhR-potency and antagonistic potential of residual oil in sediment tended to decrease over time, thus monitoring of weathering process would be key for the post management of oil-contaminated sites.

Research Area(s)

  • Effect-directed analysis, H4IIE-luc bioassay, Oil weathering, Polycyclic aromatic hydrocarbons, Sediments, Yellow Sea

Citation Format(s)

Effect-directed analysis and mixture effects of AhR-active PAHs in crude oil and coastal sediments contaminated by the Hebei Spirit oil spill. / Hong, Seongjin; Lee, Sangwoo; Choi, Kyungho et al.
In: Environmental Pollution, Vol. 199, 04.2015, p. 110-118.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review