Branched alkanes from ancient and modern sediments: Isomer discrimination by GC/MS with multiple reaction monitoring

Roger E. Summons

doi:10.1016/0146-6380(87)90039-8

Branched alkanes from ancient and modern sediments: Isomer discrimination by GC/MS with multiple reaction monitoring

Roger E. Summons^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

78 Citations (Scopus)

Abstract

Linked scanning of a tandem sector mass spectrometer has been used to identify abundant, first field free region (FFR1) unimolecular fragmentations in branched and isoprenoid hydrocarbons. The most intense, structure-specific reactions were selected to establish multiple reaction monitoring (MRM) parameters for GC/MS analysis. This methodology has been used to study the identity of co-eluting and closely eluting hydrocarbon biomarkers from modern and ancient sediments anand from extant micro-organisms. Some sediments of Cambrian and Proterozoic age have been found to contain suites of monomethylalkanes with all possible isomers present and with little apparent preference for the site of branching.

Original language	English
Pages (from-to)	281-289
Number of pages	9
Journal	Organic Geochemistry
Volume	11
Issue number	4
DOIs	https://doi.org/10.1016/0146-6380(87)90039-8
Publication status	Published - 1987

Keywords

ancient and modern sediments
biomarker hydrocarbons
branched alkanes
isoprenoids
methylalkanes
MRM
MS/MS
petroleum

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10.1016/0146-6380(87)90039-8

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abstract = "Linked scanning of a tandem sector mass spectrometer has been used to identify abundant, first field free region (FFR1) unimolecular fragmentations in branched and isoprenoid hydrocarbons. The most intense, structure-specific reactions were selected to establish multiple reaction monitoring (MRM) parameters for GC/MS analysis. This methodology has been used to study the identity of co-eluting and closely eluting hydrocarbon biomarkers from modern and ancient sediments anand from extant micro-organisms. Some sediments of Cambrian and Proterozoic age have been found to contain suites of monomethylalkanes with all possible isomers present and with little apparent preference for the site of branching.",

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AB - Linked scanning of a tandem sector mass spectrometer has been used to identify abundant, first field free region (FFR1) unimolecular fragmentations in branched and isoprenoid hydrocarbons. The most intense, structure-specific reactions were selected to establish multiple reaction monitoring (MRM) parameters for GC/MS analysis. This methodology has been used to study the identity of co-eluting and closely eluting hydrocarbon biomarkers from modern and ancient sediments anand from extant micro-organisms. Some sediments of Cambrian and Proterozoic age have been found to contain suites of monomethylalkanes with all possible isomers present and with little apparent preference for the site of branching.

KW - ancient and modern sediments

KW - biomarker hydrocarbons

KW - branched alkanes

KW - isoprenoids

KW - methylalkanes

KW - MRM

KW - MS/MS

KW - petroleum

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DO - 10.1016/0146-6380(87)90039-8

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AN - SCOPUS:0023501597

SN - 0146-6380

VL - 11

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EP - 289

JO - Organic Geochemistry

JF - Organic Geochemistry

IS - 4

ER -

Branched alkanes from ancient and modern sediments: Isomer discrimination by GC/MS with multiple reaction monitoring

Abstract

Keywords

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