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以渤海原油和3种分散剂的混合物为对象,研究分散剂的种类和相对含量对原油指纹的影响。采用溢油鉴别中常用的重复性限法对烷烃诊断比进行分析。经对原油及以不同比例配制的分散剂和原油混合物的组内和组间分析比较后发现,分散剂的种类和相对含量对一些烷烃诊断比值有影响。渤海原油中受上述分散剂影响较小的诊断比为:C_(17)/C_(18)、C_(23)+C_(25)+C_(27)+C_(29)/C_(24)+C_(26)+C_(28)+C_(30)和C_(19)+C_(20)/C_(19)+C_(20)+C_(21)+C_(22)。研究结果表明,在溢油鉴定中应该考虑可能的分散剂影响,以便选择合适的诊断比进行溢油溯源及鉴定。研究结果为准确追溯溢油源和明确责任纠纷提供更为客观的技术支撑。
Taking the mixture of Bohai crude oil and three dispersants as the object, the influence of the type and relative content of dispersant on the fingerprint of crude oil was studied. The diagnostic criteria for paraffin were analyzed using the repeatability limit commonly used in oil spill identification. Analysis and comparison of crude oils and dispersants and crude oil mixtures prepared in different proportions showed that the type and relative content of dispersants had an effect on the diagnostic ratio of some alkanes. The diagnostic ratios of Bohai crude oil less affected by the above dispersants were: C 17 / C 18, C 23 + C 25 + C 27 + C 29 / C 24 + C_26 + C_28 + C_30 and C_19 + C_20 / C_19 + C_20 + C_21 + C_22. The results show that the possible effects of dispersants should be considered in oil spill identification in order to select appropriate diagnostic ratios for oil spill traceability and identification. The results provide more objective technical support for accurate tracing of oil spill sources and clarification of liability disputes.