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Issue 8, 2008
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Rapid hydrocarbon analysis using a miniature rectilinear ion trap mass spectrometer

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Abstract

A miniature ion trap mass analyzer was applied to the analysis of traces of hydrocarbons and simple heteroatomics in the vapor phase and in aqueous solution. Vapors of acetone, acetic acid, acetonitrile, benzene, butanethiol, carbon disulfide, hexane, dichloromethane, naphthalene, toluene and xylenes were detected and quantified using solid sorbent trapping and, in some cases, by passage through a membrane interface. Aqueous solutions of benzene, toluene, xylenes, hexane and a petroleum naphtha distillate were examined using the membrane interface. Sampling, detection and identification of all compounds was completed in times of less than one minute. The gas-phase samples of toluene and benzene were detected at 200 ppt (limit of detection, LOD) for toluene and 600 ppt for benzene. Identification of benzene and xylene in aqueous solutions was readily achieved with LODs of 200 and 400 ppb, respectively. Quantification over a linear dynamic range of two orders of magnitude for the aqueous samples and three orders of magnitude for the vapor-phase samples was demonstrated.

Graphical abstract: Rapid hydrocarbon analysis using a miniature rectilinear ion trap mass spectrometer

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Publication details

The article was received on 08 Apr 2008, accepted on 21 May 2008 and first published on 23 Jun 2008


Article type: Paper
DOI: 10.1039/B805813J
Citation: Analyst, 2008,133, 1064-1071
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    Rapid hydrocarbon analysis using a miniature rectilinear ion trap mass spectrometer

    E. Sokol, K. E. Edwards, K. Qian and R. G. Cooks, Analyst, 2008, 133, 1064
    DOI: 10.1039/B805813J

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