1-Hexadecyl-3-methylimidazolium Ionic Liquid as a New Cationic Surfactant for Separation of Phenolic Compounds by MEKC

Niu, Jingang; Qiu, Hongdeng; Li, Jing; Liu, Xia; Jiang, Shengxiang

doi:10.1365/s10337-009-1028-9

Cited by 39 publications

(17 citation statements)

References 29 publications

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“…In comparison to molecular solvents, ILs have several particular properties [1], such as negligible vapor pressure, low melting point, good conductivity, etc. With the development of ILs applied to the areas of catalytic chemistry, organic synthesis, electrochemistry and analytical chemistry [1][2][3][4][5][6][7][8][9][10], it has become increasingly necessary to develop analytical techniques for determination of ILs.…”

Section: Introductionmentioning

confidence: 99%

Determination of Pyridinium Ionic Liquid Cations by Reversed Phase Ion-Pair Chromatography Using Gradient Elution

Meng

Liu

2011

Chromatographia

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Four pyridinium ionic liquid cations (N-ethylpyridinium, N-butyl-pyridinium, N-butyl-4-methyl-pyridinium, N-hexyl-pyridinium) were separated and determined by reversed phase ion-pair chromatography with ultraviolet-visible detection. The effects of ion-pair reagent, acetonitrile concentration and column temperature on the retention and separation of the cations were evaluated. Then the four pyridinium cations could be separated at baseline within 13 min. The detection limits (S/N = 3) were 0.30-0.70 mg L -1 , and relative standard deviations (n = 5) for peak areas were 0.18-0.58%. The method was applied to analyze surface water with recoveries of 99.5-104.0%, which is accurate, reliable and practical.

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Section: Introductionmentioning

confidence: 99%

Determination of Pyridinium Ionic Liquid Cations by Reversed Phase Ion-Pair Chromatography Using Gradient Elution

Meng

Liu

2011

Chromatographia

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“…Under optimum conditions, analysis in less than 12 min with LODs ranged between 0.5 and 5 g/mL was obtained. Other micellar ILs [C 14 MIm]Cl (where [C 14 MIm] is 1-tetradecyl-3-methylimidazolium), [C 14 MIm]Br, and [C 18 MIm]Br were also used [72][73][74] to develop IL-MEKC methods for the preconcentration of methylresorcinol isomers, seven urinary nucleosides, and phenolic compounds. Some improvements in the detection limits of analytes were achieved [74].…”

Section: Il-based Surfactants At Micellar Concentrationsmentioning

confidence: 99%

Ionic liquids in enhancing the sensitivity of capillary electrophoresis: Off‐line and on‐line sample preconcentration techniques

2016

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The popularity of ionic liquids (ILs) has grown during the last decade in enhancing the sensitivity of CE through different off-line or on-line sample preconcentration techniques. Water-insoluble ILs were commonly used in IL-based liquid phase microextraction, in all its variants, as off-line sample preconcentration techniques combined with CE. Water-soluble ILs were rarely used in IL-based aqueous two phase system (IL-ATPS) as an off-line sample preconcentration approach combined with CE in spite of IL-ATPS predicted features such as more compatibility with CE sample injection due to its relatively low viscosity and more compatibility with CE running buffers avoid, in some cases, anion exchange precipitation. Therefore, the attentions for the key parameters affecting the performance of IL-ATPSs were generally presented and discussed. On-line CE preconcentration techniques containing IL-based surfactants at nonmicellar or micellar concentrations have become another interesting area to improve CE sensitivity and it is likely to remain a focus of the field in the endeavor because of their numerous to create rapid, simple and sensitive systems. In this article, significant contributions of ILs in enhancing the sensitivity of CE are described, and a specific overview of the relevant examples of their applications is also given.

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“…Zheng and his coworkers ) studied the aggregation of surface active [C 16 mim]Br and reported the formation of wormlike micelles in the presence of salts, similar to the situation of some traditional ionic surfactants in aqueous solution. Also, [C 16 mim]Br was used as a new cationic surfactant for separation of phenolic compounds by MEKC (Niu et al, 2009). ILs based on imidazolium and ammonium salts with longer-substituent cations selfassemble on negatively charged polyimide substrates via electrostatic force.…”

Section: Wwwintechopencommentioning

confidence: 99%

Supramolecular Structures in the Presence of Ionic Liquids

Shen¹,

Chen²,

Zhang³

et al. 2011

Ionic Liquids: Theory, Properties, New Approaches

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1-Hexadecyl-3-methylimidazolium Ionic Liquid as a New Cationic Surfactant for Separation of Phenolic Compounds by MEKC

Cited by 39 publications

References 29 publications

Determination of Pyridinium Ionic Liquid Cations by Reversed Phase Ion-Pair Chromatography Using Gradient Elution

Determination of Pyridinium Ionic Liquid Cations by Reversed Phase Ion-Pair Chromatography Using Gradient Elution

Ionic liquids in enhancing the sensitivity of capillary electrophoresis: Off‐line and on‐line sample preconcentration techniques

Supramolecular Structures in the Presence of Ionic Liquids

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