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Wohlfahrt, S. ; Fischer, M. ; Saraji-Bozorgzad, M.* ; Matuschek, G. ; Streibel, T.* ; Post, E.* ; Denner, T.* ; Zimmermann, R.

Rapid comprehensive characterization of crude oils by thermogravimetry coupled to fast modulated gas chromatography-single photon ionization time-of-flight mass spectrometry.

Anal. Bioanal. Chem. 405, 7107-7116 (2013)
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Comprehensive multi-dimensional hyphenation of a thermogravimetry device (i.e. a thermobalance) to gas chromatography and single photon ionization-time-of-flight mass spectrometry (TG-GC×SPI-MS) has been used to investigate two crude oil samples of different geographical origin. The source of the applied vacuum ultraviolet radiation is an electron beam pumped rare gas excimer lamp (EBEL). The soft photoionization favors the formation of molecular ions. Introduction of a fast, rapidly modulated gas chromatographic separation step in comparison with solely TG-SPI-MS enables strongly enhanced detection especially with such highly complex organic matrices as crude oil. In contrast with former TG-SPI-MS measurements, separation and identification of overlying substances is possible because of different GC retention times. The specific contribution of isobaric compounds to one mass signal is determined for alkanes, naphthalenes, alkylated benzenes, and other compounds.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Crude oil; Thermal analysis; Mass spectronomy; Gas chromatography; Single photon ionization; Excimer Light-source ; Thermal-analysis ; Pyrolysis ; Petroleum ; Soft ; Ms ; Identification ; Photoionization ; Decomposition ; Wood
ISSN (print) / ISBN 1618-2642
e-ISSN 1618-2650
Quellenangaben Volume: 405, Issue: 22, Pages: 7107-7116 Article Number: , Supplement: ,
Publisher Springer
Publishing Place Heidelberg
Reviewing status Peer reviewed