Bare Silica as a Reverse-Phase Stationary Phase: Liquid Chromatographic Separation of Antihistamines with Buffered Aqueous Organic Mobile Phases

1984 ◽  
Vol 73 (10) ◽  
pp. 1480-1482 ◽  
Author(s):  
Harold Richardsonx ◽  
Brian A. Bidlingmeyer
Keyword(s):  
Stationary Phase ◽  
Chromatographic Separation ◽  
Reverse Phase ◽  
Mobile Phases ◽  
Liquid Chromatographic Separation ◽  
Phase Liquid ◽  
Liquid Chromatographic

Liquid Chromatographic Separation of Some Alkylaminocyclohexanecarbonitriles from Phenylcyclohexylamines Related to Phencyclidine

1981 ◽  
Vol 64 (6) ◽  
pp. 1431-1434
Author(s):  
George M Wall ◽  
C Randall Clark
Keyword(s):  
Liquid Chromatography ◽  
Chromatographic Separation ◽  
Solvent System ◽  
Reverse Phase ◽  
Reverse Phase Liquid Chromatography ◽  
Water Solvent ◽  
Liquid Chromatographic Separation ◽  
Phase Liquid ◽  
Liquid Chromatographic

Abstract The synthesis of five 1-aminocyclohexanecarboni-Iriles and the corresponding 1-phenylcyclohexylamines related to phencyclidine is reported. The compounds are separated by reverse phase liquid chromatography in an acidic methanol-water solvent system.

scholarly journals Considerations on Liquid-Chromatographic Separation for an Equimolar Mixture of 2,4-Dinitrophenylhydrazones of Acetaldehyde and Diacetyl

2008 ◽  
Vol 3 (1) ◽  
pp. 48-51
Author(s):  
Gheorghe Zgherea
Keyword(s):  
Binary Mixtures ◽  
Chromatographic Separation ◽  
Experimental Studies ◽  
Equimolar Mixture ◽  
Reverse Phase ◽  
Separation Processes ◽  
Mobile Phases ◽  
Liquid Chromatographic Separation ◽  
The Difference ◽  
Liquid Chromatographic

An equimolar mixture of 2.4-dinitrophenylhidrazones (2.4DNPH-ones) providing by acetaldehyde and diacetyl must be analyzed by liquid-chromatographic separation, using the mechanism of repartition with reverse phase; that full papers is for identification the optimal analytical conditions. As mobile phase are utilized various binary mixtures eluent, containing water and methanol, with 0-45% water. By the experimental studies were identified four domains of behavior and two optimal binary mixtures, with 25% and 45% water, thus this is a study on the behavior of binary mixtures mobile phases. The peaks are characterized by values of retention times and by position. The separation processes were appreciated by difference between the retention times of peaks; if the percent of water increase, the values of retention times is higher. When the percent of water is 45%, the difference between the retention times is maxim, associated with a change of peaks position.

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