Data Reduction in Gas Chromatography
Published Online: 15 SEP 2006
Copyright © 2000 John Wiley & Sons, Ltd. All rights reserved.
Encyclopedia of Analytical Chemistry
How to Cite
Eiceman, G. and Gardea-Torresdey, J. 2006. Data Reduction in Gas Chromatography. Encyclopedia of Analytical Chemistry. .
- Published Online: 15 SEP 2006
The data obtained from a gas chromatographic measurement provide the user with details on both the quantitative and the qualitative composition of the sample. This information is displayed in the chromatogram from which information also can be gleaned concerning the performance and quality of the measurement. Quantitative determinations require attention to the relative response of the detector. The assignment of identity of individual constituents is possible in a formal sense only with authentic standards and mass spectra though retention times or indices can be indicators of identity. These aspects of data reduction have been understood for several decades and chemical information can be extracted from a chromatogram with ease and convenience.
In recent years, advanced chemometrics methods have been applied to chromatographic data with intrinsic advantages for probing patterns and trends too subtle or too complex for simple inspection of chromatograms. These methods are rooted in tools such as multivariate analysis and neural network analysis. Such methods are being developed in the area of natural products analysis.