On-line coupled liquid and gas chromatography system with an int

Details On-line coupled liquid and gas chromatography system with an int On-line coupled liquid and gas chromatography system with an int

1992-11-25

1993-08-17

Therkorn, Ernest G.

Liquid purification or separation

Processes

Chromatography

2101982, 95 87, 96106, B01D 1508

Patent

active

052365930

ABSTRACT:
Apparatus and method for on-line coupled liquid chromatography and gas chromatography analysis. The system includes a high-volume, liquid vaporizing chamber, or interface capillary tube 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 vaporizing chamber is interposed between a packed or wall-coated open tubular capillary liquid chromatographic column and a capillary gas chromatographic column. The capillary liquid chromatographic column permits the use of small volumes of eluent and reduced flow rates.

REFERENCES:
patent: 4383839 (1983-05-01), Sisti et al.
patent: 4483773 (1984-11-01), Yang
patent: 4935145 (1990-06-01), Cortes
K. Grob, Jr. et al., "Coupling of High-Performance Liquid Chromatography With Capillary Gas Chromatography," J. of Chromatography, 295 (1984) 55-61.
K. Grob, Jr., `Band Broadening in Space` And The `Retention Gap` In Capillary Gas Chromatography, J. of Chromatography, 237 (1983) 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.
Herman 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 Chromatographic 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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