Abstract
BTEX in soil can be detrimental to human health directly by ways of plant absorption and groundwater irrigation. This paper takes benzene, toluene, ethylbenzene and xylene as the study cases to determine the content of BTEX in soil by the headspace-gas chromatography-mass spectrometry (GC-MS), based on which to investigate the impacts of the soil alkaline, salinity, organic matter content and ambient temperature in arid areas on the absorption of BTEX. In this way, the law of the migration of BTEX in the solution with different concentrations of components is revealed. Studies show that the adsorption isotherm coincides with the Henry (linear) adsorption model; the content of organic matter in soil is a leading factor that affects the adsorption. Migrations of BTEX in the solutions with different concentrations generally first increase and then decrease. This study may provide a valuable reference for remedying BTEX contamination in arid areas.
