title: Evaluation of ionic liquid stationary phases for one dimensional gas chromatography-mass spectrometry and comprehensive two dimensional gas chromatographic analyses of fatty acids in marine biota.
abstract: Ionic liquid stationary phases were tested for one dimensional gas chromatography-mass spectrometry (GC-MS) and comprehensive two dimensional gas chromatography (GC×GC) of fatty acid methyl esters from algae. In comparison with polyethylene glycol and cyanopropyl substituted polar stationary phases, ionic liquid stationary phases SLB-IL 82 and SLB-IL 100 showed comparable resolution, but lower column bleeding with MS detection, resulting in better sensitivity. The selectivity and polarity of the ionic liquid phases are similar to a highly polar biscyanopropyl-silicone phase (e.g. HP-88). In GC×GC, using an apolar polydimethyl siloxane×polar ionic liquid column combination, an excellent group-type separation of fatty acids with different carbon numbers and number of unsaturations was obtained, providing information that is complementary to GC-MS identification.
authors: CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China.
authors: Qun
authors: Q
authors: Gu
authors: Frank
authors: F
authors: David
authors: Frédéric
authors: F
authors: Lynen
authors: Pieter
authors: P
authors: Vanormelingen
authors: Wim
authors: W
authors: Vyverman
authors: Klaus
authors: K
authors: Rumpel
authors: Guowang
authors: G
authors: Xu
authors: Pat
authors: P
authors: Sandra
mesh_terms: D017377:Diatoms / Q000737:chemistry*; D005227:Fatty Acids / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D052578:Ionic Liquids / Q000737:chemistry*
chemical_list: D005227:Fatty Acids; D052578:Ionic Liquids