GC/FT-IR Experimental Considerations in the Separation of Complex Hydrocarbon Mixtures Using Fused Silica Columns

Authors: Cooper, J. R.; Taylor, L. T.

Source: Applied Spectroscopy, Volume 38, Issue 3, Pages 297-454 (May/June 1984) , pp. 366-370(5)

Publisher: Society for Applied Spectroscopy

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Abstract:

The successful interfacing and utilization of fused silica capillary GC columns with Fourier transform infrared spectrometry (FT-IR) can introduce difficulties not usually encountered with lower efficiency (higher capacity) GC columns. Recognition of these difficulties, however, can lead to refinement of a GC/FT-IR detection system which can analyze complex samples with low nanogram detection limits. Chromatographic and spectrometric considerations include lightpipe temperature, choice of sample introduction, column concentration dynamic range capability, infrared data acquisition rate, and spectral S/N ratio. These parameters as they relate to capillary GC/FT-IR method development are discussed. The GC/FT-IR analysis of a complex sample is presented in an effort to explain these problems. In order to reflect the FT-IR sensitivity under complex sample chromatographic conditions, quantification data using known compounds are also included.

Keywords: FT-IR, FT-IR(GC); Gas chromatograph; Hydrocarbon spectra

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702844555458

Affiliations: Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061

Publication date: May 1, 1984

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