Liquid Chromatography Coupled On-Line with Gas Chromatography: State of the Art

1994 ◽  
Vol 77 (2) ◽  
pp. 306-327 ◽  
Author(s):  
Jolan J Vreuls ◽  
Gerhardus J de Jong ◽  
Rudi T Ghusen ◽  
Udo A Th Brimkman
Keyword(s):  
Gas Chromatography ◽  
Liquid Chromatography ◽  
State Of The Art ◽  
On Line

scholarly journals Analysis of Sterol Oxidation Products in Foods

2004 ◽  
Vol 87 (2) ◽  
pp. 441-466 ◽  
Author(s):  
Francesc Guardiola ◽  
Ricard Bou ◽  
Josep Boatella ◽  
Rafael Codony
Keyword(s):  
Gas Chromatography ◽  
Liquid Chromatography ◽  
Sample Preparation ◽  
State Of The Art ◽  
The State ◽  
Oxidation Products ◽  
Cholesterol Oxidation ◽  
Cholesterol Oxidation Products ◽  
Phytosterol Oxidation Products ◽  
Adequate Method

Abstract The main aspects related to the analysis of sterol oxidation products (SOP) in foods are comprehensively reviewed. Special emphasis is placed on the critical and controversial points of this analysis because these points affect crucial analytical parameters such as precision, accuracy, selectivity, and sensitivity. The effect of sample preparation and the conditions of quantification by gas chromatography and liquid chromatography on these parameters are also reviewed. The results show that, in order to choose an adequate method to analyze SOP in a certain food, the analyst must consider its SOP concentration and matrix complexity. The term SOP includes both cholesterol oxidation products (COP) and phytosterol oxidation products (POP). The state of the art of COP and POP analysis is quite different; many more studies have dealt with the analysis of COP than of POP. However, most of the results presented here about COP analysis may be extrapolated to POP analysis because both groups of compounds show similar structures and characteristics.

Analysis of dicamba in tobacco by on-line coupled liquid chromatography—gas chromatography

1989 ◽  
Vol 473 ◽  
pp. 353-358 ◽  
Author(s):  
Vesa M.A. Häkkinen ◽  
Konrad Grob ◽  
Christoph Bürki
Keyword(s):  
Gas Chromatography ◽  
Liquid Chromatography ◽  
On Line
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