Investigations Into The Chromatographic Optimization Of Combined GC/FTIR/MS

Ditmar Wulff

doi:10.1117/12.969583

1 December 1989 Investigations Into The Chromatographic Optimization Of Combined GC/FTIR/MS

Ditmar Wulff

Proceedings Volume 1145, 7th Intl Conf on Fourier Transform Spectroscopy; (1989) https://doi.org/10.1117/12.969583
Event: Seventh International Conference on Fourier and Computerized Infrared Spectroscopy, 1989, Fairfax, VA, United States

Abstract

Even with the explosive growth and acceptance of GC/MS it has some analytical limitations. Several of these deficiencies can be overcome with information provided by GC/FTIR. Combining a GC/MS and a GC/FTIR into one system provides economies of sample, time, space, and money as well as a higher confidence qualitative result. The later results from the ability of the mass spectro -meter to give molecular fragment information with strength in homolog identification while the infrared spectrometer gives class specific-functional group and geometrical isomer data. Several configurations of the combined light pipe GC/FTIR/MS are evaluated looking toward ease of use, information content, and data evaluation. The combined system's sensitivity, chromatographic integrity, and gas chromatographic column choices and their operational parameters are discussed. The series arrangement with the GC column effluent passing through the FTIR light pipe and then serially to the MS is compared to the post column split of the column effluent to the FTIR and MS as well as to the configuration using two GC columns. Operational recommendations are given to maximize chromatographic resolution, detector sensitivity, and sample throughput. Examples are shown illustrating the combined systems operation. All parameters discussed apply to work done on the HP 5890A GC, the HP5965A IRD, and the HP 5970B MSD.

Citation Download Citation

Ditmar Wulff "Investigations Into The Chromatographic Optimization Of Combined GC/FTIR/MS", Proc. SPIE 1145, 7th Intl Conf on Fourier Transform Spectroscopy, (1 December 1989); https://doi.org/10.1117/12.969583

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