On-line supercritical fluid extraction/chromatography system for trace analysis of pesticides in soybean oil and rendered fats

1991 ◽  
Vol 3 (1) ◽  
pp. 11-16 ◽  
Author(s):  
Balasingam Murugaverl ◽  
Kent J. Voorhees
Keyword(s):  
Soybean Oil ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Trace Analysis ◽  
Extraction Chromatography ◽  
Fluid Extraction ◽  
On Line

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.

On-line coupled supercritical fluid extraction and chromatography for the determination of thiolcarbamate herbicides in soil matrix

1996 ◽  
Vol 750 (1-2) ◽  
pp. 175-181 ◽  
Author(s):  
Takashi Yarita ◽  
Akira Nomura ◽  
Yoshiyuki Horimoto ◽  
Shigeo Gonda
Keyword(s):  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Fluid Extraction ◽  
Soil Matrix ◽  
On Line
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