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

1.
College of Chemistry and Chemical Engineering, Harbin Normal University and Key Laboratory of Photonic and Electronic Bandgap Materials, Ministry of Education, Harbin 150025, China

Corresponding author: Hong Yu,
Received Date: 13 July 2013
Available Online: 25 October 2013
Fund Project: 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)

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%.
- Ion-pair chromatography,
- Indirect ultraviolet detection,
- Tetraethyl ammonium,
- 4-Aminophenol hydrochloride
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沈阳化工大学材料科学与工程学院沈阳 110142