Hydrophilic interaction liquid chromatography for separation and determination of pyrrolidinium ionic liquid cations

Guan, Chao; Yu, Hong

doi:10.1039/c5ay02774h

Cited by 9 publications

(4 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mobile phase of 0.5 mmol/L [EMIm][BF 4 ]/7.0 mmol/L glycolic acid/acetonitrile (91:9, v/v) were used to investigate the influence of column temperature (25,30,35, and 40ЊC) on the retention times of Li + , Na + , K + , and NH 4 + . It can be seen that the retention times of Li + and Na + were lengthened with the increase of column temperature, the process was an endothermic process.…”

Section: Effect Of Column Temperaturementioning

confidence: 99%

“…ILs as the mobile phase additives are more and more used in the separation of LC [21,22]. An active research is found in many reports on the role of ILs to modify the retention of different types of solutes [23][24][25]. Based on their UV absorption, imidazolium ILs have been applied as background reagents determination of ILs cations for the HPLC [26] and IC [27] using IUV.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Ion chromatography with the indirect ultraviolet detection of alkali metal ions and ammonium using imidazolium ionic liquid as ultraviolet absorption reagent and eluent

Liu

2016

J of Separation Science

Self Cite

View full text Add to dashboard Cite

Indirect ultraviolet detection was conducted in ultraviolet-absorption-agent-added mobile phase to complete the detection of the absence of ultraviolet absorption functional group in analytes. Compared with precolumn derivatization or postcolumn derivatization, this method can be widely used, has the advantages of simple operation and good linear relationship. Chromatographic separation of Li(+) , Na(+) , K(+) , and NH4 (+) was performed on a carboxylic acid base cation exchange column using imidazolium ionic liquid/acid/organic solvent as the mobile phase, in which imidazolium ionic liquids acted as ultraviolet absorption reagent and eluting agent. The retention behaviors of four kinds of cations are discussed, and the mechanism of separation and detection are described. The main factors influencing the separation and detection were the background ultraviolet absorption reagent and the concentration of hydrogen ion in the ion chromatography-indirect ultraviolet detection. The successful separation and detection of Li(+) , Na(+) , K(+) , and NH4 (+) within 13 min was achieved using the selected chromatographic conditions, and the detection limits (S/N = 3) were 0.02, 0.11, 0.30, and 0.06 mg/L, respectively. A new separation and analysis method of alkali metal ions and ammonium by ion chromatography with indirect ultraviolet detection method was developed, and the application range of ionic liquid was expanded.

show abstract

Section: Effect Of Column Temperaturementioning

confidence: 99%

mentioning

confidence: 99%

Ion chromatography with the indirect ultraviolet detection of alkali metal ions and ammonium using imidazolium ionic liquid as ultraviolet absorption reagent and eluent

Liu

2016

J of Separation Science

Self Cite

View full text Add to dashboard Cite

show abstract

“…Moreover, compared with normal‐phase chromatography, the mobile phase of HILIC is compatible with mass spectrometry (MS) (especially electrospray ionization mass spectrometry), and thus, it improves the detection sensitivity . Thus, HILIC has been widely applied in various fields, including pharmaceutical analysis, food analysis, biomedical science, analytical chemistry, etc. In addition, many new stationary phases have been developed by introducing a variety of functional groups like hydrophilic macromolecules and ionic liquids, which can provide wider ranges of applications for HILIC …”

Section: Introductionmentioning

confidence: 99%

Analysis of Morpholinium Ionic Liquid Cations by Hydrophilic Interaction Columns Coupled with Indirect UV Detection

Fan

Guan

2018

J Chinese Chemical Soc

Self Cite

View full text Add to dashboard Cite

A method was developed for the separation and detection of morpholinium ionic liquid cations by hydrophilic interaction column combined with indirect ultraviolet detection using imidazolium ionic liquids as ultraviolet absorbents in high-performance liquid chromatography. The effects of the ultraviolet absorbents, organic solvents, and the pH value of the aqueous solution in the mobile phase for the determination of morpholinium cations were investigated by using a hydrophilic column with carbamoyl group as the analytical column. The retention and detection behavior of morpholinium cations was discussed. The suitable chromatographic conditions were 0.8 mmol/L 1-ethyl-3-methyl-imidazolium tetrafluoroborate aqueous solution (pH 3.5 adjusted with acetic acid)/acetonitrile (45/55, v/v) as the mobile phase and a detection wavelength of 210 nm. Under these conditions, the baseline separation of N-methyl-N-ethyl-morpholinium cation ([MEMo] + ) and N-methyl-N-propyl-morpholinium cation ([MPMo] + ) was successfully achieved in 15 min. The detection limits of [MEMo] + and [MPMo] + were 0.595 and 0.531 mg/L, respectively. Relative standard deviations were less than 0.2%. This method has been successfully applied to the analysis of morpholinium ionic liquid samples synthesized in chemical laboratories, which is simple, reliable, and practical.

show abstract

“…Due to their unique properties, their use has attracted considerable interest, including an increasing number of publications on their use in preparing stationary phases of HPLC . An active research is found in many reports on the role of ILs to modify the retention of different types of solutes in LC . Based on their UV absorption, imidazolium ILs have been applied as background reagents for determination of IL cations in the HPLC and IC with UV indirect detection.…”

Section: Introductionmentioning

confidence: 99%

Indirect ultraviolet detection of alkaline earth metal ions using an imidazolium ionic liquid as an ultraviolet absorption reagent in ion chromatography

Liu

2017

J of Separation Science

Self Cite

View full text Add to dashboard Cite

A convenient and versatile method was developed for the separation and detection of alkaline earth metal ions by ion chromatography with indirect UV detection. The chromatographic separation of Mg , Ca , and Sr was performed on a carboxylic acid base cation exchange column using imidazolium ionic liquid/acid as the mobile phase, in which the imidazolium ionic liquid acted as an UV-absorption reagent. The effects of imidazolium ionic liquids, detection wavelength, acids in the mobile phase, and column temperature on the retention of Mg , Ca , and Sr were investigated. The main factors influencing the separation and detection were the background UV absorption reagent and the concentration of hydrogen ion in ion chromatography with indirect UV detection. The successful separation and detection of Mg , Ca , and Sr within 14 min were achieved using the selected chromatographic conditions, and the detection limits (S/N = 3) were 0.06, 0.12, and 0.23 mg/L, respectively. A new separation and detection method of alkaline earth metal ions by ion chromatography with indirect UV detection was developed, and the application range of ionic liquids was expanded.

show abstract

Hydrophilic interaction liquid chromatography for separation and determination of pyrrolidinium ionic liquid cations

Abstract: The separation and detection of pyrrolidinium cations by hydrophilic interaction liquid chromatography with indirect ultraviolet detection.

Cited by 9 publications

References 31 publications

Ion chromatography with the indirect ultraviolet detection of alkali metal ions and ammonium using imidazolium ionic liquid as ultraviolet absorption reagent and eluent

Ion chromatography with the indirect ultraviolet detection of alkali metal ions and ammonium using imidazolium ionic liquid as ultraviolet absorption reagent and eluent

Analysis of Morpholinium Ionic Liquid Cations by Hydrophilic Interaction Columns Coupled with Indirect UV Detection

Indirect ultraviolet detection of alkaline earth metal ions using an imidazolium ionic liquid as an ultraviolet absorption reagent in ion chromatography

Contact Info

Product

Resources

About