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为准确追查责任方,溢油鉴定应该考虑混入的分散剂和其它油对原未知溢油的影响。该文以此为切入点,基于烷烃指纹研究4种原油和1种分散剂形成的几种混合油的数字化鉴别。鉴别前,先采用相对标准偏差法筛选出9个稳定的烷烃诊断比,再进行主成分分析、聚类分析和多维标度分析。结果表明:分散剂对溢油溯源的影响与油种有很大关系;混合油要么与组成其的单一油的相关性差,可能很快找到油源;要么相关性较好,容易受其他未知溢油影响,造成误判。上述分析方法在本研究中都可得到客观、准确的鉴别结果,在实际鉴别中可联合使用、相互佐证。
In order to accurately trace the responsible parties, oil spill identification should take into account the impact of mixed dispersants and other oils on the original unknown spilled oil. Based on this point, this paper studies the digital identification of several mixed oils based on the alkane fingerprinting of four crude oils and one dispersant. Prior to identification, nine stable alkane diagnostic ratios were screened by relative standard deviation (RSD), followed by principal component analysis, cluster analysis and multidimensional scaling analysis. The results show that the dispersant has a great effect on the traceability of oil spilled oil. The mixed oil is either poorly correlated with the single oil composing it or may quickly find the source of oil. The correlation is good and may be easily affected by other unknown spills Oil effects, resulting in miscarriage of justice. The above analysis method can get objective and accurate identification results in this study, which can be combined and proved each other in actual identification.