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Proceedings Paper

Use Of Absorbance Data For The Gram-Schmidt Construction Of Chromatogram In GC/FT-IR Spectrometry
Author(s): Bin Wang; Xu-Jin Lu; Le-Feng Zhang; Guo-Nan Song; Xu Che
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Paper Abstract

An Absorbance Gram-Schmidt construction (AGS) method is presented for the construction of chromatogram from GC/FT-IR spectral data. Ruther than using interferometric data, as in the conventional Gram-Schmidt construction (GSC), AGS processes infrared absorbance spectra to produce the response intensity in the chromatogram. AGS has a smaller range of relative weight response (RWR) values for various compounds and a certain response represents the total infrared absorbance of a eluted component. A better signal to noise ratio can be obtained in AGS by employing fewer vectors than employed by GSC. This method can utilize standard spectra in a computer library to build up its basis set, by which the eluted components of a sample can be classified into sets of structurally related substances. These characteristics make AGS more flexible for data treatment in qualitative GC/FT-IR analysis. In comparison to the current GSC method, the differences and the advantages of AGS are evaluated.

Paper Details

Date Published: 1 December 1989
PDF: 2 pages
Proc. SPIE 1145, 7th Intl Conf on Fourier Transform Spectroscopy, (1 December 1989); doi: 10.1117/12.969435
Show Author Affiliations
Bin Wang, Dalian Institute of Chemical Physics (China)
Xu-Jin Lu, Dalian Institute of Chemical Physics (China)
Le-Feng Zhang, Dalian Institute of Chemical Physics (China)
Guo-Nan Song, Dalian Institute of Chemical Physics (China)
Xu Che, Dalian Institute of Chemical Physics (China)

Published in SPIE Proceedings Vol. 1145:
7th Intl Conf on Fourier Transform Spectroscopy

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