Novel Analytical Technique for Petroleum Biomarker Analysis

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• 作者：Douglas Stevens ; Quan Shi ; Chang Samuel Hsu
• 刊名：Energy & Fuels
• 出版年：2013
• 出版时间：January 17, 2013
• 年：2013
• 卷：27
• 期：1
• 页码：167-171
• 全文大小：300K
• 年卷期：v.27,no.1(January 17, 2013)
• ISSN：1520-5029

文摘

We report a novel analytical technique using gas chromatography/atmospheric pressure chemical ionization鈥搈ass spectrometry (GC/APCI鈥揗S) or atmospheric pressure gas chromatography鈥搈ass spectrometry (APGC鈥揗S), using corona discharge for analyzing nonpolar hydrocarbons, specifically for petroleum biomarkers that are important in geochemical studies of source rocks and crude oils. The advantages of applying MS^E for both high- and low-energy collision simultaneously were demonstrated. The enhancement of molecular ions at low-energy MS^E would facilitate the linkage with characteristic fragment ions for tandem mass spectrometry (MS鈥揗S) experiments. The combination of quadrupole and time-of-flight (QTOF) mass analyzers renders sufficient and adequate resolution for accurate mass measurement, with measurement errors less than 1 mDa or 5 ppm for all ionic species in the hopane and sterane analyses.