Fast gas chromatography: packed column solvating gas chromatography versus open tubular column gas chromatography

2000 ◽  
Vol 892 (1-2) ◽  
pp. 3-13 ◽  
Author(s):  
Naijun Wu ◽  
Juan Carlos Medina ◽  
Milton L Lee
Keyword(s):  
Gas Chromatography ◽  
Packed Column ◽  
Open Tubular Column ◽  
Fast Gas Chromatography ◽  
Solvating Gas Chromatography

Analysis of phytosterols and phytostanols in enriched dairy products by Fast gas chromatography with mass spectrometry

2014 ◽  
Vol 37 (20) ◽  
pp. 2911-2919 ◽  
Author(s):  
Raffaella Inchingolo ◽  
Vladimiro Cardenia ◽  
Maria Teresa Rodriguez-Estrada
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Dairy Products ◽  
Fast Gas Chromatography

Determination of Phytosterols in Butter Samples by Using Capillary Column Gas Chromatography

1987 ◽  
Vol 70 (5) ◽  
pp. 912-915 ◽  
Author(s):  
Randall L Smith ◽  
Darryl M Sullivan ◽  
Earl F Richter
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Retention Time ◽  
Capillary Column ◽  
Limit Of Detection ◽  
Packed Column ◽  
Gas Chromatography Mass Spectrometry ◽  
Positive Bias ◽  
Capillary Column Gas Chromatography

Abstract A positive bias in the gas chromatographic (GC) analysis of butter for β-sitosterol was discovered when attempting to confirm values by gas chromatography/mass spectrometry (GC/MS). The source of the problem was traced to an interfering material that was not effectively separated by packed column GC. Because capillary columns are known to provide superior separation, they were substituted for packed columns in the assay, and instrument parameters were modified accordingly. A compound with a similar retention time, identified by GC/MS as lanosterol, was separated from β-sitosterol by the capillary column. The capillary column technique was applied to over 300 butter samples. The results indicate that the method can accurately quantitate β-sitosterol in butter with no known interferences. The limit of detection for this method is 1 mg/100 g. Recoveries at a level of 3 mg/100 g averaged 98% with a coefficient of variation of 3.45%

Elaidic acid, vaccenic acid and rumenic acid (c9,t11-CLA) determination in human plasma phospholipids and human milk by fast gas chromatography

2013 ◽  
Vol 5 (5) ◽  
pp. 1264 ◽  
Author(s):  
Aida Maribel Chisaguano ◽  
Blanca Lozano ◽  
Carolina Moltó-Puigmartí ◽  
Ana Isabel Castellote ◽  
Magdalena Rafecas ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Human Milk ◽  
Human Plasma ◽  
Elaidic Acid ◽  
Vaccenic Acid ◽  
Plasma Phospholipids ◽  
Fast Gas Chromatography
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