METHOD OF COMBINED IDENTIFICATION OF ACETONE AND METHANOL IN NATURAL AND SEWAGE WATERS WITH APPLICATION OF GAS CHROMATOGRAPHY Russian patent published in 2015 - IPC G01N30/02 G01N33/18 

FIELD: chemistry.

SUBSTANCE: method includes separation with further identification of acetone and methanol on capillary chromatographic column in carrier gas flow, representing nitrogen; formation and registration of analysed ions, formed in flame by flame-ionisation detector, prepared is basic solution, which is well-preserved for 2 months, at temperature from -2°C to -5°C, intermediate solution with concentration 6.32 mg/dm³ is prepared by dilution of basic solution with purified water, calibration solutions are prepared for ranges of concentrations: acetone 0.025-6.32 mg/dm³, methanol 0.025-6.32 mg/dm³ by dilution of intermediate solution with water, chromatograph is calibrated by introduction of preliminarily sampled vapour phase of calibration solutions into it, calibration graph is built, after thermostatting of analysed solution vapour phase is sampled by vapour-phase syringe and introduced into chromatograph evaporator, data are processed by computer software ChemStation, which chromatographic complex MAESTRO 7820A is provided with.

EFFECT: increase of accuracy and reliability, and acceleration of analysis.

2 dwg, 6 tbl, 1 ex