METHOD OF DETERMINING ARTIFICIAL FLAVORING AGENTS IN ALCOHOL-CONTAINING SOLUTIONS Russian patent published in 2019 - IPC G01N33/14 

FIELD: chemistry.

SUBSTANCE: invention relates to analytical chemistry of solutions and can be used to determine artificial flavoring agents in alcohol-containing solutions. Method for determining artificial flavoring agents in alcohol-containing solutions includes sampling, determining the presence of artificial flavoring, wherein sample of solution is placed in hermetically sealed pump, maintained for at least 15 minutes, obtaining an equilibrium gas phase, which is injected into a detection cell with two piezo-quartz resonators (piezosensors) of volumetric acoustic waves installed in it, electrodes of one of which are coated with a thin film of a solution of dicyclohexane-18-crown-6 (18K6) in ethanol, and the other – polyvinylpyrrolidone (PVP) in acetone, recording variation of oscillation frequency ΔF of each piezosensor for at least 60 s, determining a maximum value ΔF(18K6) on piezosensor with 18K6 film and ΔF(PVP) – with PVP film, sorption parameter of volatile substances A is calculated as ratio ΔF(18K6)/ΔF(PVP), decision on availability of artificial flavoring agent in an alcohol-containing solution is taken based on the result of comparing parameter A with a given value.

EFFECT: faster analysis and higher efficiency.

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