METHOD OF DETERMINING NON-SYMMETRIC DIMETHYLHYDRAZINE IN AQUEOUS SOLUTION Russian patent published in 1997 - IPC

FIELD: environmental control. SUBSTANCE: non-symmetric dimethylhydrazine is first extracted by gas from the sample to be analyzed by passing it through cationite in H⁺ form at rate of 0.012-0.015 cu.dm/min. The treated cationite is boiled in alkaline solution the presence of hydroxyl amine, non-symmetric dimethylhydrazine is separated and absorbed with n-nitrobenzoldehyde solution in ethylene glycol/acetic acid mixture. The absorber solution is subjected to photometric evaluation. EFFECT: more efficient environment control. 2 tbl