METHOD OF SEPARATE DETERMINATION OF ACETONE AND ETHYL ACETATE IN AIR Russian patent published in 2003 - IPC

FIELD: analytical chemistry of organic compounds, analysis of gas effluent of pigment production. SUBSTANCE: separate determination of ethyl acetate and acetone in air involves preparation of sample, detection of ethyl acetate and acetone by means of piezoelectric quartz resonator modified by active sorbent beforehand. Film of tetrabenzoat-pentaeritrite with mass of 15-25 micrograms is utilized in the capacity of active sorbent-electrode modifier. Maximum sensitivity of sensor to ethyl acetate is 1.3 Hz cu m/mg and to acetone 0.6 Hz cu m/mg. EFFECT: shortened time of analysis and reduced number of employed components of hardware. 1 dwg, 2 tbl