Determination of organic acids in 1, 2-butylene oxide products by valve switch-ion chromatography

doi:10.3724/SP.J.1123.2017.11013

Abstract

Abstract:

A novel analytical method was developed for the determination of organic acids (formic acid, acetic acid and propionic acid) in 1, 2-butylene oxide (1, 2-BO) products by valve switch-ion chromatography (IC).The samples were diluted in ethanol, and then were eluted from a concentrator column (IonPac TAC-ULP1) to an analytical column (IonPac AS11).The extracts were detected by a suppressed conductivity detector.Formic acid, acetic acid and propionic acid were separated well.Good linear relationships for the three organic acids were obtained.The spiked recoveries of the three organic acids in the samples were in the range of 92.5%-111.8%.The relative standard deviations (RSDs) were less than 5.6%(n=3).The limits of detection (LODs, S/N=3) of the formic acid, acetic acid and propionic acid were 0.60-4.80 μg/L.The method is simple, rapid, and accurate, and is suitable for the determination of the organic acids in an insoluble organic system.

Key words: 1,2-butylene oxide (1,2-BO), ion chromatography (IC), organic acid, valve switch

CLC Number:

O658

XU Jingzao, PENG Zhenlei, ZHANG Yuhong, WANG Chuan, JIN Guojie. Determination of organic acids in 1, 2-butylene oxide products by valve switch-ion chromatography[J]. Chinese Journal of Chromatography, 2018, 36(4): 376-380.

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