title: Laboratory and field measurements of dry deposition of sulfur dioxide onto Chinese loess surfaces.
abstract: Laboratory and field measurements were conducted to examine dry deposition of SO2 onto Chinese loess surfaces using native soil sampled in the loess plateau, China. The field tests were employed in Beijing and Lanzhou, China, by directly measuring the dry deposition of SO2 on soil, which uses soil put on a collector as an SO2 passive sampling medium. In the laboratory, a high rate of uptake to SO2 deposition for Chinese soil surfaces due to the highly alkalinity was found. The uptake of SO2 deposition was dependent on the pH soil and relative humidity. Furthermore, we evaluated some factors that affect the measurement precision: response of SO2 uptake, repeatability, recovery factor, and variability associated with the weight and the surface coverage on the collectors. As a result, it was shown that the measurement precision was primarily related to the ratio of the SO2 deposition amount relative to the sulfur content of the original soil. This result was consistent with the field observations. The laboratory and field results indicated an excellent agreement on the SO2 uptake inherent in the results from the soil surfaces in different regions.
authors.affiliation: Graduate School of Science and Engineering, Saitama University, 255 Shimo-ohkubo, Sakura, Saitama 338-8570, Japan.
authors.forename: Atsuyuki
authors.initials: A
authors.lastname: Sorimachi
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Sakamoto
authors.forename: Mio
authors.initials: M
authors.lastname: Sakai
authors.forename: Hidekazu
authors.initials: H
authors.lastname: Ishihara
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Fukuyama
authors.forename: Masahiro
authors.initials: M
authors.lastname: Utiyama
authors.forename: Hongjie
authors.initials: H
authors.lastname: Liu
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Dagang
authors.initials: D
authors.lastname: Tang
authors.forename: Xuhui
authors.initials: X
authors.lastname: Dong
authors.forename: Hao
authors.initials: H
authors.lastname: Quan
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002681:China; D004784:Environmental Monitoring; D006863:Hydrogen-Ion Concentration; D012680:Sensitivity and Specificity; D012987:Soil; D013458:Sulfur Dioxide / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D012987:Soil; D013458:Sulfur Dioxide