Gas-liquid chromatographic resolution of free dichlorophenol isomers on new stationary liquid phases

1983 ◽  
Vol 17 (12) ◽  
pp. 691-692 ◽  
Author(s):  
A. Ono ◽  
Y. Masuda
Keyword(s):  
Stationary Liquid ◽  
Liquid Phases ◽  
Chromatographic Resolution ◽  
Liquid Chromatographic

NEW CHIRAL STATIONARY PHASES FOR THE HIGH-PERFORMANCE LIQUID CHROMATOGRAPHIC RESOLUTION OF ENANTIOMERS

1986 ◽  
Vol 15 (4) ◽  
pp. 515-518 ◽  
Author(s):  
Kazuhiko Saigo ◽  
Yun Chen ◽  
Naomi Kubota ◽  
Kouzou Tachibana ◽  
Noriyuki Yonezawa ◽  
...  
Keyword(s):  
High Performance ◽  
Stationary Phases ◽  
Chiral Stationary Phases ◽  
High Performance Liquid Chromatographic ◽  
Resolution Of Enantiomers ◽  
Chromatographic Resolution ◽  
Liquid Chromatographic

Gas-Liquid Chromatographic Determination of Volatile Organic Acids as Benzyl Esters with Applications to Tuna, Shrimp, and Eggs

1978 ◽  
Vol 61 (4) ◽  
pp. 973-981
Author(s):  
Walter F Staruszkiewicz ◽  
Enrique Fernandez-Flores ◽  
John F Bond
Keyword(s):  
Processing System ◽  
Internal Standard ◽  
Chromatographic Determination ◽  
Gas Liquid Chromatography ◽  
Rapid Preparation ◽  
Canned Tuna ◽  
Liquid Phases ◽  
Benzyl Esters ◽  
Liquid Chromatographic

Abstract Volatile acids are recognized as useful indicators of decomposition in a variety of foods. A method has been developed for the rapid preparation of benzyl esters of formic, acetic, propionic, isobutyric, and butyric acids and for their quantitative determination by gas-liquid chromatography. Esters were formed by reaction with BCl3-benzyl alcohol, followed by washing with aqueous ammonia before storage. They were chromatographed, using tetradecane as an internal standard, and were separated at 140°C on columns having DC-200 and SP-1000 as liquid phases. The method offers significant advantages, especially for the determination of formic acid, over the present official AOAC method, 17.042-17.046. Recoveries of volatile acids added to steam distillates of tuna extracts were ≥ 91% with mean recoveries for the 5 volatile acids of 96—104%. Applications to the analysis of canned tuna, frozen headless shrimp, and frozen whole egg resulted in recoveries of ≥ 8 2% with mean recoveries for the 5 acids of 91—101%. The method was compatible with an automated gas chromatograph-data processing system.

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