title: Determination of chemical form of antimony in contaminated soil around a smelter using X-ray absorption fine structure.
abstract: Only limited information is available about the behavior of antimony (Sb) in contaminated soils. However, understanding the behavior of Sb in contaminated soils is important, because the toxicity or solubility of this element depends on its chemical state. In this study, we investigated the levels of Sb and the chemical forms of Sb in the soil around a smelter using X-ray absorption fine structure (XAFS) spectra. The highest Sb concentration in the contaminated soil was 2900 mg/kg dry soil. According to Sb-K edge X-ray absorption near edge (XANE) spectra, the Sb in the soil was in the form of Sb(V) compounds. The similarity of extended XAFS (EXAFS) spectra suggests that Sb speciation was independent of the sampling site, which indicates that Sb or Sb2O3 emitted from the smelter was converted into Sb(V) compounds in the soil.
authors.affiliation: Department of Urban & Environmental Eng., Kyoto University, Kyoto 606-8501, Japan. takaoka@epsehost.env.kyoto-u.ac.jp
authors.forename: Masaki
authors.initials: M
authors.lastname: Takaoka
authors.forename: Satoshi
authors.initials: S
authors.lastname: Fukutani
authors.forename: Takashi
authors.initials: T
authors.lastname: Yamamoto
authors.forename: Masato
authors.initials: M
authors.lastname: Horiuchi
authors.forename: Naoya
authors.initials: N
authors.lastname: Satta
authors.forename: Nobuo
authors.initials: N
authors.lastname: Takeda
authors.forename: Kazuyuki
authors.initials: K
authors.lastname: Oshita
authors.forename: Minoru
authors.initials: M
authors.lastname: Yoneda
authors.forename: Shinsuke
authors.initials: S
authors.lastname: Morisawa
authors.forename: Tsunehiro
authors.initials: T
authors.lastname: Tanaka