METHOD OF GAS CHROMATOGRAPHIC ANALYSIS AND DEVICE FOR ITS REALIZATION Russian patent published in 2001 - IPC

FIELD: analytical instrumentation. SUBSTANCE: method of gas chromatographic analysis consists in injection of liquid analyzed substances into metering loop of fixed volume for non-sorbitizing substance at temperature ensuring their evaporation, pressure in metering loop is reduced to pressure across inlet in column and contents of loop in chromatographic column is transferred by flow of carrier gas. Device for realization of method of gas chromatographic analysis has source of carrier gas, evaporator, chromatographic column, detector and metering cock whose case is assembled from sections joined via seals with axial and radial holes, mobile gates manufactured of hollow tubes with plugs and holes made in side surfaces in circular recesses over outer diameter of tube. Axial conduits are interconnected with use of holes in sections. Evaporator with heater is mounted in vessel for gas metering connected to radial holes of sections. EFFECT: increased measurement accuracy. 2 cl, 4 dwg, 1 tbl