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首页> 外文期刊>Environmental Science & Technology >Characterization,Weathering,and Application of Sesquiterpanes to Source Identification of Spilled Lighter Petroleum Products
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Characterization,Weathering,and Application of Sesquiterpanes to Source Identification of Spilled Lighter Petroleum Products

机译：倍半萜的表征，风化及其在打火机油泄漏源识别中的应用

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摘要

Biomarkers have become increasingly important for identifying the source of spilled oil,due to their specificity and high resistance to biodegradation.The biomarkers most commonly used in forensic investigations are the high molecular weight (MW) tri- and pentacyclic terpanes and steranes.For lighter petroleum products such as jet fuels and diesels,the refining processes remove most high MW biomarkers from the original crude oil feedstock.The smaller bicyclic sesquiterpanes,however,are concentrated in these products.Sesquiterpanes are ubiquitous components of crude oils and ancient sediments.Examination of GC-MS chromatograms of these bicyclic biomarkers using their characteristic fragment ions (m/z 123,179,193,and 207) provides a highly diagnostic means for identifying spilled oil,particularly for lighter refined product samples that are difficult to identify by current techniques.In this work,sesquiterpanes in crude oils and petroleum products are identified and characterized,distributions of sesquiterpanes in oils and refined products are compared,the effects of evaporative weathering on sesquiterpane distributions are examined,and a methodology using diagnostic indices of sesquiterpanes is developed for oil correlation and differentiation.Finally,two case studies are presented to illustrate the unique utility of sesquiterpanes for fingerprinting and identifying unknown diesel spills.
机译：由于其特异性和对生物降解的高抵抗力，生物标志物对于鉴定溢油的来源变得越来越重要。法医研究中最常用的生物标志物是高分子量（MW）的三环和五环萜烷和甾烷。诸如喷气燃料和柴油之类的产品，提炼过程从原始原油原料中去除了大多数高分子量的生物标志物。然而，较小的双环倍半倍半数浓缩物集中在这些产品中。倍半数倍半浓缩物是原油和古代沉积物中普遍存在的成分。这些双环生物标记物的特征碎片离子（m / z 123,179,193和207）的-MS色谱图提供了一种高度诊断性的手段，可用于识别泄漏的油，尤其是对于较难通过当前技术鉴定的较轻的精制产品样品。鉴定和表征了原油和石油产品中的倍半萜比较了石油和成品油中的倍半萜的成分，研究了蒸发风化对倍半瓜分布的影响，并开发了利用倍半壳诊断指标进行油的相关和鉴别的方法。最后，通过两个案例研究来说明其独特的效用。煎锅用于指纹识别和识别未知的柴油泄漏。

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  • 来源
    《Environmental Science & Technology》 |2005年第22期|p.8700-8707|共8页
  • 作者

    ZHENDI WANG; CHUN YANG; MERV FINGAS; BRUCE HOLLEBONE; XIANZHI PENG;

  • 作者单位

    Emergencies Science and Technology Division,Environmental Technology Centre,Environment Canada,Ottawa,Ontario,Canada K1A OH3,Department of Environmental Chemistry and Microbiology,National Environmental Research Institute,Roskilde,Denmark,and Departm;

    Emergencies Science and Technology Division,Environmental Technology Centre,Environment Canada,Ottawa,Ontario,Canada K1A OH3,Department of Environmental Chemistry and Microbiology,National Environmental Research Institute,Roskilde,Denmark,and Departm;

    Emergencies Science and Technology Division,Environmental Technology Centre,Environment Canada,Ottawa,Ontario,Canada K1A OH3,Department of Environmental Chemistry and Microbiology,National Environmental Research Institute,Roskilde,Denmark,and Departm;

    Emergencies Science and Technology Division,Environmental Technology Centre,Environment Canada,Ottawa,Ontario,Canada K1A OH3,Department of Environmental Chemistry and Microbiology,National Environmental Research Institute,Roskilde,Denmark,and Departm;

    Emergencies Science and Technology Division,Environmental Technology Centre,Environment Canada,Ottawa,Ontario,Canada K1A OH3,Department of Environmental Chemistry and Microbiology,National Environmental Research Institute,Roskilde,Denmark,and Departm;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境化学;
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