基于诊断比值的Fisher判别法鉴定海上溢油  

Identification of marine oil spills by fisher discriminant based on the diagnostic ratios

作　　者：黄义 齐超越 李佳 公维民[1] 张婷婷 王思童 刘晓星[1] HUANG Yi, QI Chao-yue, LI Jia, WANG Si-tong, GONG Wei-min, ZHANG Ting-ting, LIU Xiao-xing(Environmental Science and Engineering College, Dalian Maritime University, Dalian 116026, Chin)

机构地区：[1]大连海事大学环境科学与工程学院,辽宁大连116026

出　　处：《海洋环境科学》2018年第2期299-303,共5页Marine Environmental Science

基　　金：中央高校基本科研业务费专项资金资助项目

摘　　要：采用GC-FID检测分析了8种燃料油、8种中东原油、13种非中东原油的正构烷烃分布特征。以具有地球化学意义和较强的抗风化能力的诊断比值n-C17/Pr、n-C18/Ph、Pr/Ph、LMW/HMW、CPI和(n-C19+nC20)/(n-C19~n-C22)为建模参数,对中东原油、非中东原油和燃料油进行Fisher判别。由于n-C17/Pr和nC18/Ph间存在共线性,且燃料油的n-C17/Pr受风化影响较大,所以将其不作为建模参数。所建模型的Wilks's lambda分布所对应的P值为0,表明判别模型是有效的,模型判别准确率达到93.1%。对短期风化30d后的油样的判别准确率也能够达到93.1%,说明模型也同样适用于风化溢油的鉴别。The characteristic of n-alkane distributions of 8 kinds of marine fuel,8 kinds of Middle East crude oil and13 kinds of non-Middle East crude oil were analyzed by GC-FID. The diagnostic ratios with the geochemical significance and the strong anti-weathering such as n-C17/Pr,n-C18/Ph,Pr/Ph,LMW/HMW,CPI and（ n-C19＋ n-C20）/（ nC19~ n-C22） were used as modeling parameters,Fisher discriminant of these 29 kinds of oils were performed. Since nC17/Pr and n-C18/Ph were collinear and n-C17/Pr of marine fuel had obviously changes during weathering,n-C17/Pr cannot be used as a modeling parameter. The Wilks＇ s lambda distribution of modeling corresponded to P value of 0,which indicated the discriminant model was valid,and the identification accuracy of model was 93. 1%. The identification accuracy of oils after short-term weathering for 30 days could also reach 93. 1%,this meant that the establishedmodel was also applicable to identification of weathered oil spills.

关 键 词：原油 燃料油 诊断比值 FISHER判别 短期风化 

分 类 号：X55[环境科学与工程—环境工程]