GAS MICROCHROMATOGRAPH FOR ANALYSIS OF ORGANIC AND INORGANIC SUBSTANCES Russian patent published in 2015 - IPC G01N30/02 

FIELD: chemistry.

SUBSTANCE: gas microchromatograph for analysis of organic and inorganic substances contains source of carrier gas, two microbatcher on flat plates, capillary column and planar microchromatographic column with two microdetectros on output. It also contains low-inertial heat-conductivity detector HCD and thermochemical detector MTCD with sensitive elements, placed in one flow chamber, and device for obtaining calibration mixtures. Device for obtaining calibration mixtures contains thermostatable tubular flow system, filled with granular sorbent, which consists of three sections, first of which is connected with carrier gas source, and third section by means of switch valve is connected to input of microbatchers instead of analysed mixture line.

EFFECT: increased correctness of measurement of analysed component concentration, increased precision of measuring height and area of chromatographic peaks, as well as reduction of error of measuring analysed component concentration when parameters of chromatographic process change.

1 dwg, 1 tbl