Prasantongkolmol T, Thongkorn H, Sunipasa A, Do H A, Saeung C, Jongpatiwut S
The Petroleum and Petrochemical College, Chulalongkorn University, Soi Chula 12, Phayathai Road, Pathumwan, Bangkok 10330, Thailand.
Leco Instrument (Thailand) Company Limited, 125 127 129, Soi Sirindhorn 7, Sirindhorn Road, Bang Bumru, Bang Phlat, Bangkok 10700, Thailand.
Mar Pollut Bull. 2023 Jan;186:114344. doi: 10.1016/j.marpolbul.2022.114344. Epub 2022 Nov 28.
Oil spills are a severe problem worldwide due to the resulting damage to marine and coastal ecosystems and to local economies. Identification of the source of spilled oils can be challenging, especially if the oils have undergone severe weathering. Due to their high durability, biomarker compounds (e.g. hopanes, steranes) are widely used for oil fingerprinting. Some sulfur-containing heterocyclic compounds e.g. alkylated dibenzothiophenes are also considered to be highly resistant. In this study, the use of Gas Chromatography with Sulfur Chemiluminescence Detection was investigated as a means of oil fingerprinting using the distribution the sulfur compounds in five different fresh and weathered crude oils. Chemometric analysis was also performed. The results indicate that the sulfur compounds distribution is unique for each crude oil. The distributions of the heavy sulfur compounds (i.e., C2DBTs and C3DBTs) are unchanged after weathering. Therefore, the GC-SCD technique can be considered to support the oil spill identification.
由于对海洋和沿海生态系统以及当地经济造成破坏，石油泄漏是一个全球性的严峻问题。确定泄漏石油的来源可能具有挑战性，尤其是当石油经历了严重风化时。由于其高耐久性，生物标志物化合物（如藿烷、甾烷）被广泛用于石油指纹识别。一些含硫杂环化合物，如烷基化二苯并噻吩，也被认为具有高度抗性。在本研究中，研究了使用气相色谱-硫化学发光检测法，通过分析五种不同的新鲜原油和风化原油中硫化合物的分布来进行石油指纹识别。还进行了化学计量分析。结果表明，每种原油的硫化合物分布都是独特的。重硫化合物（即C2DBTs和C3DBTs）的分布在风化后没有变化。因此，气相色谱-硫化学发光检测技术可被视为有助于石油泄漏识别。
