Institute of Sea Studies Adm. Paulo Moreira (IEAPM), Arraial do Cabo, Brazil.
Mar Pollut Bull. 2010 Dec;60(12):2263-74. doi: 10.1016/j.marpolbul.2010.08.008. Epub 2010 Sep 17.
The current work aimed to identify the source of an oil spill off the coast of Maranhão, Brazil, in September 2005 and effect a preliminary geochemical survey of this environment. A combination of bulk analytical parameters, such as carbon isotope (δ(13)C) and Ni/V ratios, and conventional fingerprinting methods (High Resolution Gas Chromatography and Mass Spectrometry) were used. The use of bulk methods greatly speeded source identification for this relatively unaltered spill: identification of the likely source was possible at this stage. Subsequent fingerprinting of biomarker distributions supported source assignment, pointing to a non-Brazilian oil. Steranes proved the most useful biomarkers for sample correlation in this work. Distribution patterns of environmentally more resilient compound types, such as certain aromatic structures, proved inconclusive for correlation, probably in view of their presence in the background.
本研究旨在确定 2005 年 9 月巴西马拉尼昂海岸溢油事件的溢油源，并对该环境进行初步地球化学调查。研究采用了大量分析参数（如碳同位素 (δ(13)C) 和 Ni/V 比值）和传统的指纹识别方法（高分辨率气相色谱和质谱）相结合的方法。这些方法大大加快了对这种相对未受干扰溢油源的识别速度：在这个阶段，就可以确定可能的溢油源。随后对生物标志物分布的指纹分析支持了溢油源的分配，表明溢油来自非巴西的石油。甾烷是本研究中最有用的样品相关生物标志物。某些芳烃结构等环境更具弹性的化合物类型的分布模式对于相关性的证明是没有结论的，这可能是因为它们在背景中存在。
