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Gas chromatography with diode array detection in series with flame ionisation detection
journal contribution
posted on 2023-05-19, 15:04 authored by Gras, R, Luong, J, Robert ShellieRobert ShellieWe introduce a gas chromatography detection approach that uses diode array detection operated in series with flame ionisation detection and demonstrate the utility of the detection approach for determination of volatile organic compounds. Diode array detection brings ultraviolet − visible spectroscopy (over a range of 190–640 nm) onto the capillary gas chromatography time-scale, where average peak widths of analytes are on the order of 3–5 s. The non-destructive nature of the diode array detector affords serially-coupled flame ionisation detection. This arrangement delivers near-simultaneous selective and universal detection without incurring additional analytical time, and without recourse to column flow splitting. The hyphenated technique is shown to be effective for chromatographic applications spanning an equivalent volatility range from C1 to C7 n-paraffin hydrocarbons. The approach introduced herein provides increased sensitivity and selectivity for classes of compounds amenable to electronic spectroscopy such as alkenes, dienes, sulfurs, and aromatic compounds. The approach is demonstrated for direct measurement of carbon disulfide in work place atmospheres with a detection limit of 93 pg on column and for the direct measurement of 1,3-butadiene in hydrocarbon matrices and ambient air with a detection of 73 pg on column, each in less than 5 min.
Funding
Australian Research Council
Trajan Scientific Australia Pty Ltd
University of South Australia
History
Publication title
Journal of Chromatography AVolume
1500Pagination
153-159ISSN
0021-9673Department/School
School of Natural SciencesPublisher
Elsevier Science BvPlace of publication
Po Box 211, Amsterdam, Netherlands, 1000 AeRights statement
Copyright 2017 Elsevier B.V.Repository Status
- Restricted