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Determination of tetraethyl ammonium by ion-pair chromatography with indirect ultraviolet detection using 4-aminophenol hydrochloride as background ultraviolet absorbing reagent

Chun-Miao Zou ,  Hong Yu ,  Miao-Yu Wang

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Citation:  Chun-Miao Zou, Hong Yu, Miao-Yu Wang. Determination of tetraethyl ammonium by ion-pair chromatography with indirect ultraviolet detection using 4-aminophenol hydrochloride as background ultraviolet absorbing reagent[J]. Chinese Chemical Letters, 2014, 25(2): 201-204. shu

Determination of tetraethyl ammonium by ion-pair chromatography with indirect ultraviolet detection using 4-aminophenol hydrochloride as background ultraviolet absorbing reagent

    • 通讯作者: Hong Yu,
  • 基金项目:

    This work was supported by the Natural Science Foundation of Heilongjiang Province (Grant No. B201307) (Grant No. B201307)

    the Ministry of Education of Heilongjiang Province (No. 12531192)  (No. 12531192)

    Technological Innovation Team Construction in Universities of Heilongjiang Province (No. 2011TD010). (No. 2011TD010)

摘要: A method was developed for the determination of tetraethyl ammonium (TEA) by reversed-phase ionpair chromatography with indirect ultraviolet detection. Chromatographic separation was achieved on a reversed-phase C18 column using background ultraviolet absorbing reagent - ion-pair reagent - organic solvent as mobile phase. The effects of the background ultraviolet absorbing reagents, detection wavelength, ion-pair reagents, organic solvents and column temperature on the determination method were investigated and the retention rules discussed. Results found that TEA could be successfully analyzed by using 0.7 μmol/L 4-aminophenol hydrochloride and 0.15 μmol/L 1-heptanesulfonic acid sodium mixed with 20% (v/v) methanol asmobile phase at a UV detection wavelength of 230 nm. Under these conditions, the retention time of tetraethyl ammonium was 2.85 min. The detection limit (S/N = 3) for TEA was 0.06 mg/L. The relative standard deviations (n = 5) for peak area and retention time were 0.35% and 0.02%, respectively. The method has been successfully applied to the determination of synthesized tetraethyl ammonium bromide. Recovery of tetraethyl ammonium after spiking was 99.1%.

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  • 收稿日期:  2013-07-13
  • 网络出版日期:  2013-10-25
通讯作者: 陈斌, bchen63@163.com
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