The development of methods for the determination of organic compounds (ethylene oxide, 1,3-butadiene, acrylonitrile) at reference levels in ambient air

The results of experimental studies on the development of gas chromatographic methods for the determination of 1,3-butadiene and ethylene oxide, acrylonitrile in ambient air at the reference levels – by adsorbing the studied compounds from ambient air onto a Tenax TA sorbent and using optimum thermal desorption and capillary gas chromatographic conditions are presented in this article. The adsorption, thermal desorption and gas chromatographic parameters of the determination of 1,3-butadiene and ethylene oxide, acrylonitrile in ambient air were justified. We have achieved a high sensitivity of the gas chromatographic determination of the studied compounds at the reference levels (mg/m 3) was achieved: 1,3-butadiene – 0.002, ethylene oxide – 0.005, acrylonitrile – 0.002 with an error of determination to within 25 %.