Simultaneous Determination of Four Kinds of Alkanolamines in Desulfurization Solution by Ion Chromatography
Received:July 06, 2012  Revised:August 06, 2012
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DOI:doi:10.3969/j.issn.2095-1035.2012.03.014
KeyWord:ion chromatography;alkanolamines;dimethylethanolamine(DMAE);methyldiethanolamine(MDEA); triisopropanolamine (TIPA); isopropanolamine (IPA)
              
AuthorInstitution
LIU Yuxiu 瑞士万通中国 中心实验室,北京
ZHU Yan 浙江大学 化学系,杭州
CHEN Zhidong 常州大学 化学化工学院,江苏 常州
ZHOU Xu 江苏省环境科学研究院 环境工程重点实验室,南京
CHEN Meilan 浙江树人大学 生物与环境工程学院,杭州
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Abstract:
      A new ion chromatographic method for simultaneous separation and determination of isopropanolamine (IPA), triisopropanolamine (TIPA), methyldiethanolamine (MDEA), Dimethylethanolamine(DMAE) and six kinds of cations was developed. The optimal chromatographic conditions were as following: a TSK gelSuper IC-CR cation exchange column, the mixture of 2.0mmol/L 18-Crown-6, 2.2 mmol/L Methanesulfonic acid and 0.5 mmol/L L-Histidine as eluent, a flow rate of 0.5mL/min, a suppressed conductivity detection, and the injection volume of 30 μL. The limit of detection for DMAE, MDEA, TIPA, IPA was 0.48, 36.9, 47.0 and 1.39 μg/L, respectively. The average recovery for DMAE, MDEA, TIPA, IPA was 103.15%,95.48%,97.64%,92.41% , respectively. The method has the advantages of simplicity, fast speed, high sensitivity and good anti-interference capability. It has been applied for the determination of DMAE, MDEA, TIPA, and IPA in the desulfurization solution with satisfactory results.
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