Rapid determination of 1,1-dimethylhydrazine transformation products in soil by accelerated solvent extraction coupled with gas chromatography–tandem mass spectrometry
作者： Dmitry S. Kosyakov , Nikolay V. Ul’yanovskii , Sergey A. Pokryshkin , Dmitry E. Lakhmanov , Oleg A. Shpigun
DOI: 10.1080/03067319.2015.1090569
关键词:
摘要: ABSTRACTA method for the analytical extraction of mobile species eightmain transformation products 1,1-dimethylhydrazine (formaldehyde dimethylhydrazone, acetaldehyde 2-furaldehyde 1,1,4,4-tetramethyl-2-tetrazene, N,N-dimethylformamide, N-nitrosodimethylamine, 1-methyl-1H-1,2,4-triazole, and 1-formyl-2,2-dimethylhydrazine) from soils using subcritical acetonitrile at a pressure 100 bar is proposed. The effects temperature, number cycles, moisture content soil samples on recovery analytes were studied. It was found that, with high concentrations lignin humic substances, efficient can be attained an addition significant amounts alkali to (2.5 g/g). Under optimum conditions, higher than 70% time no more 30 min. A combination proposed sample preparation approach analysis by gas chromatography–tandem mass spectrometry (...
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