HPLC determination of glyoxal in aldehyde solution with 3-methyl-2-benzothiazolinone hydrazone

作     者：Yamei ZHU Xiaoli YAO Shaohui CHEN Qun CUI Haiyan WANG 

作者机构：College of Chemistry and Chemical EngineeringNanjing University of TechnologyNanjing 210009China Yangzi InstituteSinopec Yangzi Petrochemical Company Ltd.Nanjing 210048China 

出 版 物：《Frontiers of Chemical Science and Engineering》 (化学科学与工程前沿（英文版）)

年 卷 期：2011年第5卷第1期

页      面：117-121页

核心收录：

学科分类：07[理学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：Financial support by the China Petroleum and Chemical Corporation is gratefully acknowledged. 

主　　题：HPLC glyoxal 3-methyl-2-benzothiazolinone hydrazone diazine dicarbonyl compounds 

摘      要：Based on the absorption property of a diazine that can be formed by reaction of glyoxal and 3-methyl-2-benzothiazolinone hydrazone(MBTH)in the Ultravioletvisible(UV-vis)spectral region,a HPLC method was developed for the determination of glyoxal in acetaldehyde solution.Glyoxal was derivatised from MBTH and the derivatives(diazine)were analyzed by HPLC for identification and quantification.The determination was performed on a ZORBAX Eclipse XDB-C18 column(4.6
250 mm,5 mm)at 35℃ with an injection volume of 10 mL,using a mixture of acetonitrile-water solvent(99∶5,v∶v)as a mobile phase with a flow rate of 0.8 mL·min^(–1).The proper derivative reaction conditions were the temperature of 70℃,MBTH to carbonyl molar ratio of 12,and reaction time of 110 min.The glyoxal diazine was a yellow dye with a maximum molar absorptivity at 401 nm and its retention time was 5.2 min under optimal HPLC conditions.The standard curve for glyoxal had a strong linear relationship with a regression coefficient(R2=0.999)in the range of 0.002–0.020 g·L^(–1).The analysis of glyoxal in an oxidising solution gave accurate results with a relative standard deviation(RSD)value of 0.55%.The average relative recovery was 102%.This efficient HPLC technique is also proposed for detecting other dicarbonyl compounds besides glyoxal.