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《Hebei Journal of Industrial Science and Technology》 2007-05
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UV-spectrophotometric determination of glyoxal in glyoxal solution

SONG Hai-ying1,ZHAO Di-shun2,ZHAO Ying2,ZHANG Zhi-yong2,LIU Ran2 (1.College of Sciences,Hebei University of Science and Technology,Shijiazhuang Hebei 050018,China;2.College of Chemical and Pharmaceutical Engineering,Hebei University of Science and Technology,Shijiazhuang Hebei 050018,China)  
Based on the absorption property of glyoxime which can be formed by addition reaction of aldehyde group and hydroxylamine in the UV-spectral region,spectrophotometric determination of glyoxal in glyoxal solution was proposed.Linearity for the determination of glyoxal was found in the ranges of 8.4×10-6~7.2×10-5 mol/L and its regression equation was obtained.The mean recovery for glyoxal is 101.1%(n=8) and RSD is 0.75%.The method can be used for the analysis of glyoxal in the oxidation of acetaldehyde by nitric acid.
【CateGory Index】: O657.32
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