Monitoring toxicity of polycyclic aromatic hydrocarbons in intertidal sediments for five years after the Hebei Spirit oil spill in Taean, Republic of Korea

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• 作者：Chang-Hoon Lee ; Jong-Hyeon Lee ; Chan-Gyoung Sung ; Seong-Dae Moon ; Sin-Kil Kang ; Ji-Hye Lee ; Un Hyuk Yim ; Won Joon Shim ; Sung Yong Ha
• 关键词：Hebei Spirit ; Oil spill ; Sediment toxicity ; Polycyclic aromatic hydrocarbons ; Sediment quality guidelines ; Oil weathering
• 刊名：Marine Pollution Bulletin
• 出版年：15 November, 2013
• 年：2013
• 卷：76
• 期：1-2
• 页码：241-249
• 全文大小：1329 K

文摘

Ecotoxicological monitoring of intertidal sediments was performed for 5 years after the Hebei Spirit oil spill in Taean, Korea. Sediment toxicity was observed on most of the beaches 4 months after the spill and later decreased rapidly to nontoxic levels 8 months after the spill. The concentrations of total polycyclic aromatic hydrocarbons (TPAHs) in the sediments ranged from 2 to 530,000 ng/g during the monitoring. More than half of the samples exhibited significant toxicity 5 years after the Hebei Spirit oil spill. Using a logistic regression model, the median lethal concentration of TPAHs to amphipod Monocorophium uenoi was estimated to be 36,000 ng/g. From the 63 chemistry and toxicity data, the effect range-low, effect range median, threshold effect level, and probable effect level were derived to be 3190, 54,100, 2480, and 29,000 ng/g, respectively. The relative compositions of the PAH groups indicated that the weathering process is still ongoing.