FIELD: chemistry.
SUBSTANCE: method includes aerosol spraying of the surface with a combined indicator composition which includes benzalkonium chloride, alkyl dimethylamine, alkylbenzene sulphonate, formaldehyde, ethyl alcohol, a nonionic surfactant (OP-7), citric acid, orthophosphoric acid, dithizone and water. The composition is applied by spraying the analysed surface using an aerosol device at a distance of 0.1-0.2 m from the surface on the leeward side at a rate of 0.4-0.6 l/m2. Decontamination and disinfection is provided not less than 0.6 hour after treatment. Detection of traces of trinitrotoluene-based explosives is based on the appearance of a brown colour on the surface of the object 5-6 minutes after application of the combined indicator composition.
EFFECT: invention enables combined decontamination, disinfection and detection of traces of explosives.
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