STATIONARY PHASE FOR GAS CHROMATOGRAPHY, METHOD FOR PRODUCTION THEREOF, USE THEREOF IN CHROMATOGRAPHIC COLUMNS FOR SELECTIVE SEPARATION OF ORGANIC COMPOUNDS Russian patent published in 2024 - IPC G01N30/02 

FIELD: analytical chemistry.

SUBSTANCE: invention can be used in analysis of organic and inorganic substances by capillary gas chromatography. Stationary phase for gas chromatography is PTMSP, modified with polyethyleneimine solution, characterized by a homogeneous mesoporous structure withstanding heating from 25°C to 263°C; presence in the spectrum of bands, at 1,472 cm⁻¹, characterizing N-H deformation vibrations; presence of band at 1,310 cm⁻¹, which relates to C-N bond vibrations; presence in the spectrum of a wide band in region of 3,200–3,600 cm⁻¹, which characterizes N-H stretching vibrations of polyethyleneimine.

EFFECT: simpler and faster preparation of a stationary phase for gas chromatography and improved separation capacity of the stationary phase in chromatographic columns when separating organic compounds.

4 cl, 11 dwg, 1 tbl