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A. D. Smolenkov, I. A. Rodin, R. S. Smirnov, O. G. Tataurova, O. A. Shpigun
Application
of ion and ion-pair chromatography with mass-spectrometric detection as methods
for determination of unsymmetrical dimethylhydrazine and its transformation
products
Abstract
The conditions for simultaneous determination of unsymmetrical
dimethylhydrazine and its transformation products in aqueous solutions were
developed using ion and ion-pair chromatography with electrospray ionization
single-quadrupolemass-spectrometry detection. It was shown that up to 7
components can be determined simultaneously with limits of detection in the ppb
range. The proposed techniques were applied to analysis of 500 mg/L solutions
of UDMH oxidized by atmospheric oxygen. Accumulation of formic acid dimethylhydrazide, 1-methyl-1,2,4-triazole and dimethylamine
was demonstrated during 70-day observation period .
Key words: liquid chromatography – mass spectrometry, unsymmetrical
dimethylhydrazine, transformation products, analysis of aqueous solutions.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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