METHOD FOR DETERMINATION OF WATER-SOLUBLE VOLATILE COMPONENTS AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC G01N30/04 

FIELD: measuring equipment.

SUBSTANCE: invention relates to gas chromatographic methods of analyzing water-soluble volatile components and can be used for qualitative and quantitative analysis of complex mixtures of substances of natural and industrial origin in various industries. Method for determining water-soluble volatile components involves extraction of volatile components from the initial solution by an inert gas stream by bubbling contact of the gas stream with a solution of volatile components, and the stream of inert gas saturated with volatile components is bubbled through a small volume of distilled water, which is dosed into a gas chromatograph for analysis, solution of volatile components in distilled water is held at a temperature lower than that of the initial solution, and before analysis a fixed amount of the internal standard is introduced into it. Device for realizing said method comprises in-series connected inert gas preparation unit and two bubblers, wherein first bubbler is filled with sample of initial aqueous solution of volatile components with volume V₁, and the second bubbler is filled with distilled water with volume V₂=0.1V₁, device is additionally equipped with two thermostats, in one of which thermostat the first bubbler at temperature T₁ below water boiling point, and in second is maintained second bubbler at temperature T₂, considerably less than T₁.

EFFECT: high sensitivity of gas chromatographic determination of water-soluble volatile components and reduced random measurement errors.

2 cl, 1 dwg, 1 tbl