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首页> 外文期刊>Fuel >Analysis of crude oils using gas purge microsyringe extraction coupled to comprehensive two dimensional gas chromatography-time-of-flight mass spectrometry
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Analysis of crude oils using gas purge microsyringe extraction coupled to comprehensive two dimensional gas chromatography-time-of-flight mass spectrometry

机译：使用吹扫微注射器萃取结合全面的二维气相色谱-飞行时间质谱分析原油

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摘要

As a complex mixture, the analysis of individual compounds in crude oil is a great challenge. The traditional sample preparation method such as column chromatography is time-consuming, solvent-wasting, and very possible to cause the loss of light hydrocarbons. In addition, coelution of compounds with similar boiling points or polarities often occurs in one dimensional gas chromatography-mass spectrometry (1D GC-MS). To overcome these disadvantages, a homemade gas purge microsyringe extraction (GP-MSE) device was prepared and coupled to comprehensive two-dimensional gas chromatography time -of-flight mass spectrometry (GC x GC-TOFMS) for the analysis of crude oils from different regions. The extraction conditions of GP-MSE were optimized in detail. The whole process of GP-MSE extraction only takes 7 min, only 20 mu L of organic solvent is needed, and almost complete extraction of analytes is achieved. Compared with the common used methods, light hydrocarbons in all the samples were well retained and more compounds were separated and identified, including diamondoid series, pyrrolic nitrogen compounds and other important biomarkers such as terpane and sterane series. Coelution of compounds in 1D GC-MS was eliminated in GC x GC-TOFMS. Based on the developed GP-MSE-GC x GC-TOFMS, the distribution of trace compounds in crude oils and effect of biodegradation were discussed in detail. (C) 2016 Elsevier Ltd. All rights reserved.
机译：作为复杂的混合物，原油中单个化合物的分析是一个巨大的挑战。传统的样品制备方法（例如柱色谱法）既费时又浪费溶剂，并且很可能导致轻烃的流失。此外，具有相似沸点或极性的化合物的共洗脱通常在一维气相色谱-质谱（1D GC-MS）中发生。为克服这些缺点，制备了一种自制的气体吹扫微注射器提取（GP-MSE）装置，并与全面的二维气相色谱飞行时间质谱仪（GC x GC-TOFMS）结合使用，以分析不同来源的原油地区。详细优化了GP-MSE的提取条件。 GP-MSE提取的整个过程仅需7分钟，只需要20μL的有机溶剂，就可以完成几乎完全的分析物提取。与常用方法相比，所有样品中的轻烃都保留得很好，并且可以分离和鉴定出更多的化合物，包括类金刚石系列，吡咯氮化合物和其他重要的生物标志物，例如萜烯和甾烷系列。在GC x GC-TOFMS中消除了一维GC-MS中化合物的共洗脱。基于已开发的GP-MSE-GC x GC-TOFMS，详细讨论了微量化合物在原油中的分布和生物降解作用。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
    《Fuel》 |2016年第15期|788-797|共10页
  • 作者

    Gao Xuanbo; Zhu Shukui; Zhang Wanfeng; Li Donghao; Dai Wei; He Sheng;

  • 作者单位

    China Univ Geosci, Key Lab Tecton & Petr Resources, Minist Educ, Wuhan 430074, Peoples R China;

    China Univ Geosci, Key Lab Tecton & Petr Resources, Minist Educ, Wuhan 430074, Peoples R China|China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China;

    China Univ Geosci, Key Lab Tecton & Petr Resources, Minist Educ, Wuhan 430074, Peoples R China|Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Isotope Geochronol & Geochem, Guangzhou 510640, Guangdong, Peoples R China;

    Yanbian Univ, Key Lab Nat Resource Changbai Mt & Funct Mol, Minist Educ, Yanji 133002, Peoples R China;

    China Univ Geosci, Key Lab Tecton & Petr Resources, Minist Educ, Wuhan 430074, Peoples R China;

    China Univ Geosci, Key Lab Tecton & Petr Resources, Minist Educ, Wuhan 430074, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Gas purge microsyringe extraction; Comprehensive two-dimensional gas chromatography; Biomarkers; Diamondoids; Carbazoles; Crude oils;

    机译：气体吹扫微注射器萃取;全面二维气相色谱;生物标志物;类金刚石;咔唑;原油;

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