Bioaccessibility of AhR-active PAHs in sediments contaminated by the Hebei Spirit oil spill: Application of Tenax extraction in effect-directed analysis SCIE SCOPUS

Cited 28 time in WEB OF SCIENCE Cited 30 time in Scopus
Title
Bioaccessibility of AhR-active PAHs in sediments contaminated by the Hebei Spirit oil spill: Application of Tenax extraction in effect-directed analysis
Author(s)
Hong, Seongjin; Yim, Un Hyuk; Ha, Sung Yong; Shim, Won Joon; Jeon, Seungyeon; Lee, Sangwoo; Kim, Cheolmin; Choi, Kyungho; Jung, Jinho; Giesy, John P.; Khim, Jong Seong
KIOST Author(s)
Yim, Un Hyuk(임운혁)Ha, Sung Yong(하성용)Shim, Won Joon(심원준)
Publication Year
2016-02
Abstract
Bioaccessibility of toxic substances in sedimentary residual oil is a crucial factor that needs to be considered for accurate risk assessments posed by oil spills. However, information on oil weathering processes and bioaccessibility of residual oil is often not sufficient and clear. In the present study, bioaccessibility of aryl hydrocarbon receptor (AhR)-active polycyclic aromatic hydrocarbons (PAHs) in coastal sediments near the site of the Hebei Spirit oil spill (Korea, 2007) was assessed by Tenax extraction in effect-directed analysis (EDA). Sediment samples collected 6 years after the oil spill were extracted using Soxhlet or Tenax, and EDA was performed using a battery of H4IIE-luc bioassay and GC/MSD analysis. Concentrations of PAHs and alkyl-PAHs in Soxhlet extracts ranged from 210 to 53,000 mu g kg(-1) dry mass. However, concentrations of PAHs and alkyl-PAHs in Tenax extracts were approximately 20-fold less compared to those in Soxhlet extracts. In Soxhlet and Tenax extracts, the major AhR-active PAHs were identified as C1-chrysene, C3-chrysene, and C4-phenanthrene. Concentrations of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) equivalents (TEQ(PAHS)) explained 31% and 60% of the bioassay-derived TCDD-EQ concentrations in Soxhlet and Tenax extracts, respectively. Overall, bioaccessibility of PAHs and alkyl-PAHs in sedimentary residual oils depended on hydrophobicity (log K-ow) and degree of weathering of crude oil. The results of the present study provide further evidence in support of the biological and ecological recoveries of oil spill sites. (C) 2015 Elsevier Ltd. All rights reserved.
ISSN
0045-6535
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2253
DOI
10.1016/j.chemosphere.2015.09.043
Bibliographic Citation
CHEMOSPHERE, v.144, pp.706 - 712, 2016
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Subject
POLYCYCLIC AROMATIC-HYDROCARBONS; EXXON-VALDEZ OIL; POLYCHLORINATED-BIPHENYLS; UNRESOLVED COMPLEX; COASTAL SEDIMENTS; CRUDE-OIL; BIOAVAILABILITY; IDENTIFICATION; GULF; PHOTOOXIDATION
Keywords
H4IIE-lnc bioassay; Toxicity equivalents; GC/MSD; Potency balance; Sediment; Yellow sea
Type
Article
Language
English
Document Type
Article
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Related Researcher
Research Interests

Microplastic pollution,Persistent Organic Pollutants,Oil Pollution,미세플라스틱 오염,잔류성 유기오염물질,유류오염

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