DEVICE FOR ANALYSIS WITH ADDITIONAL CONCENTRATION OF THE COMPOSITION OF THE EQUILIBRIUM VAPOR PHASE Russian patent published in 2023 - IPC G01N30/24 

FIELD: analytical instrumentation.

SUBSTANCE: invention relates to gas chromatography and can be used to analyse impurities and dissolved gases in various liquids. A device for analysis with additional concentration of the composition of the equilibrium vapor phase, which is above the liquid in a closed temperature-controlled container, includes a container divided into two containers located one above the other, interconnected by a neck equipped with a gaseous sampling channel for analysis, while the upper of the containers is made in the form of a hollow cylinder with a channel in the side wall and located inside it, connected with the drive, a sealed piston, and the internal volume of the lower container is made in the form of two hemispheres or cones connected to each other by bases, while one of the tops of the cones is connected to the neck, and the second to a channel, at the outlet of which a valve is installed to drain the analysed liquid.

EFFECT: increase in the degree of extraction of dissolved gases and an increase in the concentration of impurities contained in the analysed liquid as part of the equilibrium vapor phase above the liquid.

2 cl, 1 dwg