Whittaker M, Pollard S J, Risden G
Department of Chemistry, University of Edinburgh, UK.
Sci Total Environ. 1999 Feb 2;226(1):23-34. doi: 10.1016/s0048-9697(98)00358-1.
Chemical fingerprinting is commonly undertaken to assist in the resolution of multi-party liability disputes, particularly when contaminants have migrated beyond property boundaries, in litigation-driven environmental assessments related to oil spills, and in assessing potential environmental impacts following releases of petroleum products into the environment. In this paper, we present data relating to the performance of source correlation indices for selected heavy oils over the course of a 9-month microcosm study. The results obtained in this study demonstrated that hopane pair indices varied little in magnitude, and may therefore be considered reliable source correlation indices. Over the course of the 9-month microcosm study [17 alpha(H)21 beta(H)-norhopane: 17 alpha(H)21 beta(H)-hopane] exhibited mean values of 0.7 +/- 0.1 for a heavy ballast oil, and mean values that varied between 0.6 and 0.7 (+/- 0.05) for a crude oil. Similarly [(17 alpha(H)21 beta(H)-homohopane (22S): 17 alpha(H)21 beta(H)-homohopane (22R)] gave a mean value of 1.3 (precisions less than 0.05) and [17 alpha(H)21 beta(H)-bishomohopane: 17 alpha(H)21 beta(H)-methylhopane] varied between 1.3 and 1.6 (precision up to 0.1) for the same crude oil. These source correlation indices may be used to support a correlation between fresh and weathered oil samples for source identification purposes involving heavy and crude oil contamination of the terrestrial environment.
化学指纹识别通常用于协助解决多方责任纠纷，特别是在污染物已扩散至财产边界之外的情况下、在与石油泄漏相关的诉讼驱动型环境评估中，以及在评估石油产品释放到环境后可能产生的环境影响时。在本文中，我们展示了在为期9个月的微观研究过程中，选定重油的源相关性指数的性能数据。本研究获得的结果表明，藿烷对指数在大小上变化不大，因此可被视为可靠的源相关性指数。在为期9个月的微观研究过程中，对于一种重质压舱油，[17α(H)21β(H)-降藿烷:17α(H)21β(H)-藿烷]的平均值为0.7±0.1，对于一种原油，其平均值在0.6至0.7（±0.05）之间变化。同样，对于同一种原油，[(17α(H)21β(H)-高藿烷(22S):17α(H)21β(H)-高藿烷(22R)]的平均值为1.3（精度小于0.05），[17α(H)21β(H)-双高藿烷:17α(H)21β(H)-甲基藿烷]在1.3至1.6之间变化（精度高达0.1）。这些源相关性指数可用于支持新鲜油样和风化油样之间的相关性，以用于涉及陆地环境重油和原油污染的源识别目的。
