FIELD: analytical chemistry, possibly evaluation of chemical environment at spilling of missile fuel - non-symmetrical dimethyl hydrazone.
SUBSTANCE: method is realized with use of linear colorimetric process comprising steps of passing predetermined volume of analyzed air through indicating tube filled with inert carrier - silica gel with grains 0.25 - 0.4 mm wetted with reactive 0.1 - 1% solution of matter selected from group: selenious acid, silver nitrate, lead acetate and dried till loose state; then heating indicating tube till 50 - 60°C for 2 - 3 min and determining length of colored layer of indicating powder.
EFFECT: possibility for colorimetric determination of dimethyl hydrazone formaldehyde in air at predetermined concentration range.
4 notes, 9 dwg
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