On-line coupled liquid and gas chromatography system

Details On-line coupled liquid and gas chromatography system On-line coupled liquid and gas chromatography system

1989-05-05

1990-06-19

Therkorn, Ernest G.

Liquid purification or separation

Processes

Chromatography

55 67, 55386, 2101982, 436161, B01D 1508

Patent

active

049351451

ABSTRACT:
Apparatus and method for on-line coupled liquid chromatography and gas chromatography analysis includes a retention gap which allows injection of a substantial volume of sample-carrying eluent and concentrates bands, obviating adverse effects on the resolution or peak shape of the components of interest. The retention gap is used to simultaneously receive and vaporize liquid solvent in a manner highly suitable for purposes of gas chromatographically separating solutes of interest dispersed in the liquid chromatography solvent.

REFERENCES:
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patent: 4470832 (1984-09-01), Sugawara
patent: 4577492 (1986-03-01), Holba
K. Grob, Jr. et al., "Coupling of High-Performance Liquid Chromatography with Capillary Gas Chromatography," J. of Chromatography, 295 (1984).
K. Grob, Jr., "Band Broadening in Space" and the `Retention Gap` in Capillary Gas Chromatography, J. of Chromatography, 237 (1982), 15-23.
K. Grob, Jr. et al., "Some Technical Aspects of the Preparation of a `Retention Gap` in Capillary Gas Chromatography," J. of Chromatography, 244 (1982), 185-196.
Hernan Cortes et al., "Determination of Trace Chlorinated Benzenes in Fuel Oil by On-Line Multidimensional Chromatography Using Packed-Capillary Liquid Chromatography and Capillary Gas Chromatography," J. of Chromatography, 349 (1985), 55-61.
H. J. Cortes et al., "On-Line Multidimensional Chromatography Using Packed Capillary Liquid Chromatography and Capillary Gas Chromatography," J. of High Resolution Chromatography & Chromatography Communications, (1985), vol. 8, 469-474.
Hernan J. Cortes et al., "On-Line Multidimensional Chromatography Using Micro HPLC and Capillary GC," Chromatography Forum, Nov.-Dec. (1986), 29-34.
Ronald E. Majors, "Multidimensional High Performance Liquid Chromatography," J. of Chromatography Science, 18 (1980), 571-579.
J. A. Apffel et al., "Hydrocarbon Group-Type Analyses by On-Line Multi-Dimensional Chromatography," J. of Chromatography, 279 (1983), 139-144.

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