以2种原油和3种溢油分散剂(简称分散剂)的6种原油和分散剂混合物样品为对象,利用方差分析法研究分散剂的种类和相对含量对油指纹(烷烃诊断比)的影响。首先对原始数据进行了单样本非参数K-S检验和Cochran最大方差检验,然后排除掉不适合做方差分析的诊断比值,最后对符合条件的数据进行方差分析。研究发现,有些诊断比不论什么分散剂都会对其产生影响,有一些诊断比,随着分散剂种类的不同,有时影响显著有时影响不显著。这表明本研究中的诊断比都受分散剂的种类和相对含量的影响,溢油指纹鉴定需考虑分散剂的影响。 The variance analysis was used to study the effect of the type and relative content of dispersants on the oil fingerprint (paraffin diagnostic ratio) for six samples of crude oil and dispersant mixtures from two crude oils and three oil spill dispersants (referred to as dispersants) . First of all, the raw data were tested by single-sample nonparametric K-S test and Cochran maximum variance test, and then the diagnostic ratio unsuitable for ANOVA was excluded. Finally, the variance analysis was performed on the eligible data. The study found that some diagnoses did not affect any dispersant, some had diagnostic odds, and sometimes, depending on the type of dispersant, the effect was sometimes significant and sometimes insignificant. This indicates that the diagnostic ratios in this study are affected by the type and relative content of dispersants, and fingerprinting of oil spills should consider the influence of dispersants.