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N. V. Ul’yanovskii, D. S. Kosyakov, K. G. Bogolitsyn, D. I. Falev, O. A. Shpigun, A. D. Smolenkov
Peculiarities of sample preparation in
chromatographic determination of 1,1-dimethylhydrazine and N-nitrosodimethylamine in peaty soils
Abstract
An assessment of the applicability of
existing methods of extraction and chromatographic determination of mobile
forms of 1,1-dimethylhydrazine, as well as important product of its oxidative
transformation N-nitrosodimethylamine for analysis of peat bog soils
typical for the European North of Russia was done. It is shown that after three
days from the soil contamination with 1,1-dimethylhydrazine no more than 15% of
the initial content of the pollutant can be extracted. It was found that the
maximum degree of extraction of unsymmetrical dimethylhydrazine from peat can
be achieved using steam distillation from the medium of 40% solution of sodium
hydroxide. The optimization of sample preparation conditions and
chromatographic determination of NDMA in soils with high organic content was
performed.
Key words: rocket fuel, peaty soil,
1,1-dimethylhydrazine, N-nitrosodimethylamine, HPLC, sample preparation.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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