Determination of the optical purity of threonine and hydroxyproline by capillary gas chromatography on a chiral stationary phase

Amino Acids ◽  
1999 ◽  
Vol 17 (3) ◽  
pp. 293-300 ◽  
Author(s):  
B. Franssou ◽  
U. Ragnarsson
Keyword(s):  
Gas Chromatography ◽  
Stationary Phase ◽  
Capillary Gas Chromatography ◽  
Chiral Stationary Phase ◽  
Optical Purity

scholarly journals Determination of Residues of Eight Synthetic Pyrethroids in Tobacco by Capillary Gas Chromatography

1994 ◽  
Vol 16 (2) ◽  
pp. 65-75
Author(s):  
BS Dattilo ◽  
S Gallo ◽  
G Lionetti
Keyword(s):  
Gas Chromatography ◽  
Film Thickness ◽  
Stationary Phase ◽  
Capillary Gas Chromatography ◽  
Capillary Column ◽  
Limit Of Detection ◽  
Synthetic Pyrethroids ◽  
Gas Chromatograph ◽  
Limit Of Determination

AbstractA method was developed for the simultaneous determination of the residues of the following eight synthetic pyrethroids and their isomers in tobacco: tetramethrin, permethrin, cyfluthrin, cypermethrin, alfamethrin, flucythrinate, fluvalinate and deltamethrin. The pesticides were extracted from ground tobacco by means of acetone:water 9:1 for 5 hours. The extract was diluted with water and partitioned into n-hexane. The organic phase was concentrated to about 1 ml and then purified by a Florisil-SPE column. The gas-chromatographic analyses were run with a gas-chromatograph Carlo Erba Series Mega HRGC 5300 equipped with a capillary column (stationary phase OV-1 - 0.10-0.15 µm film thickness, 25 m long) and a 63Ni electron-capture detector. Two different injection ports were used: split-splitless and cold split-splitless, working both with isothermal and programmed temperatures. Both the limit of detection and the limit of determination were estimated for each compound. Recoveries from fortified samples at level of 1 µgKg-1 are reported.

Separation of Warfarin Enantiomers by Capillary Gas Chromatography with Chiral Stationary Phase

2004 ◽  
Vol 33 (3) ◽  
pp. 260-261 ◽  
Author(s):  
Iwao Abe ◽  
Daiki Nagamatsu ◽  
Taketoshi Nakahara ◽  
Gerd Fabian
Keyword(s):  
Gas Chromatography ◽  
Stationary Phase ◽  
Capillary Gas Chromatography ◽  
Chiral Stationary Phase ◽  
Warfarin Enantiomers
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