Purity of carbon dioxide as limiting factor in trace-level analysis by on-line supercritical fluid extraction/capillary gas chromatography

1991 ◽  
Vol 32 (11-12) ◽  
pp. 543-545 ◽  
Author(s):  
M. W. F. Nielen ◽  
J. A. Stäb ◽  
H. Lingeman ◽  
U. A. Th. Brinkman
Keyword(s):  
Carbon Dioxide ◽  
Gas Chromatography ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Capillary Gas Chromatography ◽  
Limiting Factor ◽  
Fluid Extraction ◽  
Trace Level ◽  
On Line ◽  
Level Analysis

On-line supercritical fluid extraction-capillary gas chromatography

1987 ◽  
Vol 59 (4) ◽  
pp. 640-644 ◽  
Author(s):  
Bob W. Wright ◽  
Stephen R. Frye ◽  
Dennis G. McMinn ◽  
Richard D. Smith
Keyword(s):  
Gas Chromatography ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Capillary Gas Chromatography ◽  
Fluid Extraction ◽  
On Line

scholarly journals Supercritical fluid extraction-capillary gas chromatography: On-line coupling with a programmed temperature vaporizer

1990 ◽  
Vol 13 (10) ◽  
pp. 669-673 ◽  
Author(s):  
Robert J. Houben ◽  
Hans-Gerd M. Janssen ◽  
Piet A. Leclercq ◽  
Jacques A. Rijks ◽  
Carel A. Cramers
Keyword(s):  
Gas Chromatography ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Capillary Gas Chromatography ◽  
Fluid Extraction ◽  
On Line ◽  
Line Coupling

Analysis of Polychlonnated Biphenyls in Fatty Biological Matrixes by On-Line Supercritical Fluid Extraction and Supercritical Fluid Cleanup

1995 ◽  
Vol 78 (4) ◽  
pp. 1051-1054 ◽  
Author(s):  
Earl G Alley ◽  
Guozhen Lu
Keyword(s):  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Silica Gel ◽  
Supercritical Co2 ◽  
Functionalized Silica ◽  
Fluid Extraction ◽  
Extraction And Separation ◽  
On Line ◽  
Chromatographic Media ◽  
Level Analysis

Abstract We present a method that combines the extraction of polychlonnated biphenyls (PCBs) and their separation from relatively large quantities of fat in biological matrixes by combined supercritical fluid extraction and separation. Cyano-functionalized silica gel, silica gel, aluminum oxide, Florisil, 3-aminopropyl- functionalized silica gel, and octadecyl-functionalized silica gel were tested for suitability as chromatographic media for separation of PCBs from lipids. Silica gel, 3-aminopropyl-functionalized silica gel, and Florisil adequately separated PCBs from lipids when eluted with supercritical CO2. Florisil allowed both the extraction of PCBs and their separation from lipids in PCB-spiked chicken egg and fish. Two grams of sample containing PCBs at 0.125 μg/g was sufficient for subsequent separations and the low-level analysis required for the more toxic PCB components.

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