短期风化对溢油组成的影响  

Effect of short-time weathering on spilled oil composition

作　　者：李芸[1] 李思源[2] 杨万颖[2] 谢月亮[2] 孙永革[3] 熊永强[1] 

机构地区：[1]中国科学院广州地球化学研究所机地球化学国家重点实验室,广东广州510640 [2]深圳市计量质量检测研究院,广东深圳518131 [3]浙江大学环境与生物地球化学研究所,浙江杭州310027

出　　处：《海洋环境科学》2010年第4期516-520,共5页Marine Environmental Science

基　　金：国家科技支撑计划项目(2006BAC11B03)

摘　　要：采用实验室内的溢油模拟实验,从分子级水平揭示短期风化作用对溢油组成的影响。研究表明,该原油的风化损失主要发生在最初的24 h,且以饱和烃组分的损失为主;正构烷烃的分布形态中C数大于18的部分基本不受短期风化作用的影响;大多数的多环芳烃指标都明显受风化作用的影响;相对含量较低以及共溢出的存在是影响甾萜类生标化合物准确定量的两个主要因素。研究结果可为溢油源鉴定指标的选择提供实验依据。The weathering simulating experiment presents the influence of weathering on the spilled oil composition on molecular level.The results showed that loss of crude oils caused by short-term weathering mainly occurs within the first 24 hours of oil spill,and is mainly the saturated hydrocarbons.The short-term weathering has not obviously effect on the distributing form C18 n-alkanes on GC profiles.Most indices of polycyclic aromatic hydrocarbons are obviously influenced by short-term weathering.The relatively low content and co-elution in GC analyses are the two mostly important factors of failing to quantify the sterane and terpane biomarkers exactly.The results can provided the experimental evidences for the diagnostic indices of source identification.of oil spilled.

关 键 词：溢油 来源 风化作用 诊断指标 

分 类 号：X55[环境科学与工程—环境工程]