Oil and POPs Research Group, South Sea Research Institute, KORDI, Geoje, Republic of Korea.
J Hazard Mater. 2011 Dec 15;197:60-9. doi: 10.1016/j.jhazmat.2011.09.055. Epub 2011 Sep 17.
After the Hebei Spirit oil spill in December 2007, mixtures of three types of Middle East crude oil were stranded along 375 km of coastline in Western Korea. Stranded oils were monitored for their identity and weathering status in 19 stations in three provinces. The results obtained using a weathering model indicated that evaporation would be a dominant weathering process immediately after the spill and the sequential changes of chemical composition in the field verified this prediction positively. In the early stages of weathering, the half-life of spilled oil was calculated to be 2.6 months. Tiered fingerprinting approaches identified background contamination and confirmed the identity of the stranded oils with the spill source. Double ratios using alkylated phenanthrenes and dibenzothiophenes in samples after the spill clearly reveal the impact of weathering on oil. However, to derive defensible fingerprinting for source identification and allocation, recalcitrant biomarkers are extremely useful. Weathering status of the stranded oils was evaluated using composition profiles of saturated hydrocarbons, polycyclic aromatic hydrocarbons and various weathering indices. Most samples collected 8 months after the spill were categorized in either the advanced or extreme weathering states. Gradual increase in toxic components in the residual oil through weathering emphasizes the need for adaptive ecotoxicological approaches.
2007 年 12 月河北溢油事故后，三种中东原油的混合物在朝鲜西部 375 公里的海岸线上搁浅。在三省的 19 个监测站监测了搁浅油的身份和风化状况。使用风化模型得到的结果表明，溢油后蒸发将是主导的风化过程，野外化学成分的顺序变化也证实了这一预测。在风化的早期阶段，计算出溢油的半衰期为 2.6 个月。分层指纹识别方法确定了背景污染，并确认了搁浅油与溢油源的身份。溢油后样品中烷基化菲和二苯并噻吩的双比值清楚地揭示了风化对油的影响。然而，为了得出可辩护的源识别和分配指纹，难降解生物标志物是非常有用的。利用饱和烃、多环芳烃和各种风化指数的组成分布来评估搁浅油的风化状况。溢油 8 个月后采集的大多数样品被归类为先进或极端风化状态。通过风化，残油中有毒成分逐渐增加，强调需要采用适应性生态毒理学方法。
