College of Navigation, Dalian Maritime University, Dalian 116026, China.
College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China.
Mar Pollut Bull. 2018 Aug;133:852-860. doi: 10.1016/j.marpolbul.2018.06.038. Epub 2018 Jun 26.
Two fuel oils and two crude oils were subjected to a 60-day weathering simulation experiment, and the effects of weathering on some common parameters for aromatics and aromatic δC values were studied. The results show that weathering of all oil samples affected little the DBT/P (dibenzothiophene/phenanthrene) ratio and methylphenanthrene distribution fraction. Four oil samples could be distinguished only by the DBT/P ratio. The effect of weathering on isotopes in polycyclic aromatic hydrocarbons was small. The results show that the types of four oil samples can be distinguished, while Kuwait and Russia crude oils cannot be discriminated from each other totally by double-coordinate two-dimensional maps for aromatic δC; all of the oil samples can be distinguished by principal component analysis of δC for aromatics, the relationship of DBT/P and PAHs δC values. Therefore, the δC value of aromatics can be used as an alternative index for the analysis of oil spills.
两种燃料油和两种原油进行了为期 60 天的风化模拟实验，研究了风化对芳烃的一些常见参数和芳烃 δC 值的影响。结果表明，所有油样的风化对 DBT/P（二苯并噻吩/菲）比值和甲基菲分布分数影响不大。仅通过 DBT/P 比值就可以区分四个油样。风化对多环芳烃中的同位素影响较小。结果表明，可以区分四种油样的类型，而通过芳烃 δC 的双坐标二维图谱，无法完全区分科威特和俄罗斯原油；通过芳烃 δC 的主成分分析，以及 DBT/P 和 PAHs δC 值的关系，可以区分所有油样。因此，芳烃的 δC 值可用作溢油分析的替代指标。
