METHOD FOR GAS CHROMATOGRAPHY DETERMINATION OF DIMETHYLAMINE MICROCONCENTRATION IN AIR

摘要

FIELD: analytical chemistry, ecology, in particular controlling of environmental air.;SUBSTANCE: claimed method includes aspiration if air sample through chemosorbtive medium, elution of formed dimethylamine salt, eluate closure with alkali, and gas chromatography analysis of gas phase with flame-ionization detection. Dimethylamine salt elution from adsorbent is carried out with 1 cm³ of distillated water; closured with alkali eluate is held in thermostat for 5 min; and as filling in separating chromatography column chromosorb 103, containing 5 % of PEG-20000 and treated with 20 % hexamethyldisilazane solution is used.;EFFECT: method for dimethylamine detection with improved sensibility and accuracy.