Rapid Determination of Pyridinium Ionic Liquid Cations by Ion-Pair Chromatography Using a Reversed Phase Silica-Based Monolithic Column

2012 ◽  
Vol 40 (3) ◽  
pp. 409
Author(s):  
Ling-Min MENG ◽  
Hong YU ◽  
Xu HUANG ◽  
Ya-Jie MA
Keyword(s):  
Ionic Liquid ◽  
Rapid Determination ◽  
Monolithic Column ◽  
Reversed Phase ◽  
Ion Pair ◽  
Ion Pair Chromatography

Rapid determination of quinine in SA drinks by reversed phase ion pair chromatography

1979 ◽  
Vol 169 (4) ◽  
pp. 281-283 ◽  
Author(s):  
Hans J. Jeuring ◽  
Willem Hoeven ◽  
Pieter Doorninck ◽  
Reimer Broeke
Keyword(s):  
Rapid Determination ◽  
Reversed Phase ◽  
Ion Pair ◽  
Ion Pair Chromatography

scholarly journals Rapid Determination of Thiamine, Riboflavin, Pyridoxine, and Niacinamide in Infant Formulas by Liquid Chromatography

2002 ◽  
Vol 85 (4) ◽  
pp. 945-951 ◽  
Author(s):  
David C Woollard ◽  
Harvey E Indyk
Keyword(s):  
Liquid Chromatography ◽  
Mobile Phase ◽  
Rapid Determination ◽  
Reversed Phase ◽  
Ion Pair ◽  
Infant Formulas ◽  
Ion Pair Chromatography ◽  
Naturally Occurring ◽  
Sample Extract

Abstract A simplified, simultaneous determination of vitamins B1, B2, B3, and B6 in supplemented infant formulas was developed from a single deproteinized sample extract, with analysis by reversed-phase, ion-pair chromatography with an acidified methanol–water mobile phase. The dioctylsulfosuccinate counter-ion facilitates unique retention of the pyridine-based vitamins (niacinamide and pyridoxine) and allows for concurrent measurement of both the pyridoxal and riboflavin 5′-phosphate endogenous components of milk. Other naturally occurring undetected vitamin congeners have minimal analytical significance. UV detection is used for niacinamide, and programmed fluorescence detection is used for riboflavin and the B6 vitamins. Thiamine is routinely determined sequentially under modified elution conditions.

Reversed-phase ion-pair chromatography in determination of sinomenine contents in Sinomenium acutum

2010 ◽  
Vol 30 (2) ◽  
pp. 193-195
Author(s):  
Hui WANG ◽  
Qing YE ◽  
Liang ZHAO ◽  
Wen-jun TIAN ◽  
Guo-qing ZHANG
Keyword(s):  
Reversed Phase ◽  
Ion Pair ◽  
Ion Pair Chromatography ◽  
Sinomenium Acutum
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