Immobilization of phosphonium-based ionic liquid stationary phases extends their operative range to routine applications in the flavor, fragrance and natural product fields

2022 ◽  
pp. 462796
Author(s):  
Cecilia Cagliero ◽  
Humberto Bizzo ◽  
Patrizia Rubiolo ◽  
Arianna Marengo ◽  
Stefano Galli ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Natural Product ◽  
Stationary Phases

Separation of Fatty Acid Dimethyl Esters on an Ionic Liquid Gas Chromatographic Column

2020 ◽  
Author(s):  
R E Pauls ◽  
B Pease
Keyword(s):  
Ionic Liquid ◽  
Fatty Acid ◽  
Stationary Phases ◽  
Carbon Number ◽  
Fatty Acid Esters ◽  
Reaction Products ◽  
Isomer Separation ◽  
Metathesis Reaction ◽  
Polydimethyl Siloxane ◽  
Acid Esters

Abstract An ionic liquid (IL) 111 column was compared with other commonly employed stationary phases including polydimethyl siloxane and polyethylene glycol for the separation of fatty acid monomethyl and dimethyl esters. The fatty acid esters employed in this study were derived from metathesis reactions of vegetable oils both with and without olefins. The IL 111 column demonstrated enhanced performance compared with conventional columns for the separation of these esters. These advantages included significantly enhanced retention of dimethyl esters relative to monomethyl esters, excellent cis/trans isomer separation and the ability to analyze higher carbon number dimethyl esters. As a result, these columns are highly suited for the analysis of mixtures of mono- and dimethyl fatty acid esters found in lipid metathesis reaction products or to determine monofunctional impurities in samples of commercial dimethyl esters.

Application of Mobile Phases Containing Ionic Liquid for HPLC Analysis of Selected Isoquinoline Alkaloids

2017 ◽  
Vol 100 (6) ◽  
pp. 1652-1659 ◽  
Author(s):  
Anna Petruczynik ◽  
Justyna Misiurek ◽  
Tomasz Tuzimski ◽  
Monika Waksmundzka-Hajnos
Keyword(s):  
Ionic Liquid ◽  
Stationary Phases ◽  
Reversed Phase ◽  
System Efficiency ◽  
Organic Modifier ◽  
Optimal Conditions ◽  
Retention Behavior ◽  
Isoquinoline Alkaloids ◽  
Mobile Phases ◽  
Chemical Groups

Abstract An HPLC procedure on a polar reversed-phase column with mobile phases containing ionic liquid (IL) was developed for the analysis of selected alkaloids from different chemical groups. We aimed to obtain optimal conditions for the separation of alkaloids because widely used silica-based stationary phases exhibit a silanol effect, rendering analysis of basic analytes extremely difficult. Retention, separation selectivity, peak symmetry, and system efficiency were examined in various eluent systems containing different concentrations of IL and acetonitrile. The obtained results revealed substantial influence from the concentrations of IL, the organic modifier, and temperature on the retention behavior of the investigated alkaloids. The most selective and efficient chromatographic systems were applied for the analysis of several alkaloids in a plant extract.

Preparation of monodisperse porous polymeric ionic liquid microspheres and their application as stationary phases for HPLC

Talanta ◽  
2020 ◽  
Vol 208 ◽  
pp. 120462 ◽  
Author(s):  
Qiaohong Peng ◽  
Yue Wu ◽  
Hailin Cong ◽  
Youqing Shen ◽  
Khalid Mahmood ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Stationary Phases ◽  
Polymeric Ionic Liquid

Collection and identification of an unknown component from Eugenia uniflora essential oil exploiting a multidimensional preparative three-GC system employing apolar, mid-polar and ionic liquid stationary phases

2019 ◽  
Vol 218 ◽  
pp. 101-114 ◽  
Author(s):  
Danilo Sciarrone ◽  
Antonino Schepis ◽  
Gemma De Grazia ◽  
Archimede Rotondo ◽  
Filippo Alibrando ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Essential Oil ◽  
Structure Elucidation ◽  
Stationary Phases ◽  
Eugenia Uniflora ◽  
Unknown Component

MDGC-Prep is used in combination with NMR, GC-FTIR and GC-MS analyses for the structure elucidation of an unknown component from Eugenia uniflora L. essential oil.

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