[Tenax TA adsorption/thermal desorption/capillary gas chromatography for monitoring BTX in the ambient air].
Copyright policy )[Tenax TA adsorption/thermal desorption/capillary gas chromatography for monitoring BTX in the ambient air].
A method for monitoring low concentration of benzene, toluene, p-xylene, o-xylene (BTX) in ambient air is set up. The optimum of desorption and analysis parameter is selected.Tenax TA adsorption/thermal desorption/capillary gas chromatography is used.The relative standard deviation of benzene, toluene, p-xylene, o-xylene in ambient air are from 4.30% to 10.81%, which shows this method has good repeatability. The recoveries of BTX are more than 94%. The minimum detectable concentration to benzene, toluene, p-xylene, o-xylene is 0.09, 0.12, 0.23, 0.26 microg/m3 respectively.This method can be used to determinate low concentration of BTX in ambient air.
- Tianjin Centers for Disease Control and Prevention China (People's Republic of)
Air Pollutants, Chromatography, Gas, Reproducibility of Results, Benzene, Adsorption, Xylenes, Toluene
Air Pollutants, Chromatography, Gas, Reproducibility of Results, Benzene, Adsorption, Xylenes, Toluene
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