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

作者：Lee Chang Hoon^*; Lee Jong Hyeon; Sung Chan Gyoung; Moon Seong Dae; Kang Sin Kil; Lee Ji Hye; Yim Un Hyuk; Shim Won Joon; Ha Sung Yong

来源：Marine Pollution Bulletin, 2013, 76(1-2): 241-249.

DOI：10.1016/j.marpolbul.2013.08.033

• Hebei Spirit
• Oil spill
• Sediment toxicity
• Polycyclic aromatic hydrocarbons
• Sediment quality guidelines
• Oil weathering

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.

• 出版日期2013-11-15