FIELD: chemistry.
SUBSTANCE: method involves adsorbing DBMBF2 or a derivative thereof on a polymer matrix containing polar groups (e.g. OH groups). Presence of pyridine vapour in air is indicated by fluorescence in the 400-500 nm region under the action of pyridine when a matrix with low fluorophore content (such that it is mainly in monomer form) is used, or by increasing fluorescence intensity in the 400-500 nm region with simultaneous decrease in intensity in the 500-600 nm region (if there is considerable content of the dimer form along with the monomer form in the matrix).
EFFECT: detecting pyridine vapour in air in 10-60 s.
3 cl, 3 ex, 7 dwg
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