Restoration for comprehensive two-dimensional gas chromatography

Jiazheng Shi, Stephen E. Reichenbach

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper develops an approach for restoration of data from comprehensive two-dimensional gas chromatography (GCxGC), a powerful new technology for chemical separations. GCxGC restoration is required to separate coeluting (i.e., overlapping) peaks. The GCxGC process is modeled as a two-dimensional linear, shift-variant system, based on the properties of chemical compounds and gas chromatography. The model can account for nonhomogeneous peak shapes and separability of the two instrument columns. The restoration problem is formulated to minimize the difference between observed GCxGC data and an ideal separation, subject to the physically meaningful constraints: nonnegativity, volume preservation, and unimodality. The paper develops a constrained alternating least-squares (CALS) method for solving the restoration problem. Experimental results based on simulation and real GCxGC data indicate that the proposed model and CALS method perform well for GCxGC restoration.

Original languageEnglish (US)
Title of host publication2005 IEEE International Conference on Electro Information Technology
StatePublished - 2005
Event2005 IEEE International Conference on Electro Information Technology - Lincoln, NE, United States
Duration: May 22 2005May 25 2005

Publication series

Name2005 IEEE International Conference on Electro Information Technology
Volume2005

Conference

Conference2005 IEEE International Conference on Electro Information Technology
Country/TerritoryUnited States
CityLincoln, NE
Period5/22/055/25/05

ASJC Scopus subject areas

  • Engineering(all)

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