Correlated multi-dimensional chromatography with confirmatory hy

Details Correlated multi-dimensional chromatography with confirmatory hy Correlated multi-dimensional chromatography with confirmatory hy

1993-08-02

1995-03-21

Warden, Robert J.

Measuring and testing

Gas analysis

Gas chromatography

73 2339, 73 2336, 73 6153, 73 1902, 210656, 364497, 422 70, 422 89, 436161, G01N 3002, B01D 1508

Patent

active

053985397

ABSTRACT:
In a correlated two-dimensional gas chromatography system, it is necessary to "pair" peaks from one chromatogram with respective peaks of another chromatogram. Both peaks of a pair should correspond to the same sample component. The present invention provides for confirmation/disconfirmation of pairs that may be speculative or arbitrary. A hybrid chromatographic column is designed so that the retention time of a sample component is the average of the retention times of that component in the two independent columns. Thus, a peak location in the hybrid chromatogram can be calculated for each pair of peaks. The absence of a peak at that location or the inconsistency of the area of a peak at that location disconfirms the pairing. The invention also provides for higher dimensional systems and for other separation technologies.

REFERENCES:
patent: 4469601 (1984-09-01), Beaver et al.
patent: 4592842 (1986-06-01), Tomlinson
patent: 5116764 (1992-05-01), Annino et al.
patent: 5196039 (1993-03-01), Phillips et al.
J. B. Phillips et al., "Comprehensive Two Dimensional Gas Chromatography", May 13-16, 1991, vol. 1, 13th International Symposium on Capillary Chromatography, pp. 260-272.
J. B. Phillips et al., "High-Speed Two-Dimentional Gas Chromatography".
W. Jennings, "8.4 Multidimentional Chromatography", Analytical Gas Chromatography, 1987, pp. 170-174.

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