title: [Factors affecting benzene diffusion from contaminated soils to the atmosphere and flux characteristics].
abstract: The influencing factors of benzene diffusion fluxes from sand and black soil to atmosphere were investigated using a flux chamber (30.0 cm x 17.5 cm x 29.0 cm). In this study, the benzene diffusion fluxes were estimated by measuring the benzene concentrations both in the headspace of the chamber and in the soils of different layers. The results indicated that the soil water content played an important role in benzene diffusion fluxes. The diffusion flux showed positive correlation with the initial benzene concentration and the benzene dissolution concentration for both soil types. The changes of air flow rate from 300 to 900 mL x min(-1) and temperature from 20 degrees C to 40 degrees C resulted in increases of the benzene diffusion flux. Our study of benzene diffusion fluxes from contaminated soils will be beneficial for the predicting model, and emergency management and precautions.
authors.forename: Ping
authors.initials: P
authors.lastname: Du
authors.forename: Shi-Jie
authors.initials: SJ
authors.lastname: Wang
authors.forename: Huan-Huan
authors.initials: HH
authors.lastname: Zhao
authors.forename: Bin
authors.initials: B
authors.lastname: Wu
authors.forename: Chun-Mei
authors.initials: CM
authors.lastname: Han
authors.forename: Ji-Dun
authors.initials: JD
authors.lastname: Fang
authors.forename: Hui-Ying
authors.initials: HY
authors.lastname: Li
authors.forename: Masaaki
authors.initials: M
authors.lastname: Hosomi
authors.forename: Fa-Sheng
authors.initials: FS
authors.lastname: Li
mesh_terms: D001272:Atmosphere / Q000737:chemistry; D001554:Benzene / Q000032:analysis*; D004058:Diffusion; D004784:Environmental Monitoring; D004787:Environmental Pollution / Q000032:analysis*; D008962:Models, Theoretical; D012987:Soil / Q000737:chemistry; D013696:Temperature
chemical_list: D012987:Soil; D001554:Benzene