title: [Estimation of soil's heavy metal concentrations (As, Cd and Zn) in Wansheng mining area with geochemistry and field spectroscopy].
abstract: In the present paper, Chongqing Wansheng mining area was selected as the study area, and the ASD FieldSpec Pro III portable spectroradiometer (350 to 2,500 nm) was used as the spectral measurement instrument to collect the reflectance spectra of 171 soil samples and 123 soil samples in March and in August 2012 respectively. In order to create the retrieval model to retrieve soil heavy metal concentration, 40 among the 123 soil samples in August 2012 were collected to do chemical analysis. Then, the heavy metals' concentration and the reflectance of the 40 soil samples were analyzed together. The results show that the ratio of the reflectance at 2,320 and 1,755 nm in the nearinfrared range, the ratio of the reflectance on 2,260 and 2,210 nm in the nearinfrared range, and the ratio of the reflectance at 480 and 1,920 nm in the visible and near infrared range has a significant correlation with heavy metal concentration of As, Cd and Zn respectively, so the spectral absorption feature parameters (SAFP) for retrieving soil heavy metal concentration of As, Cd and Zn from soil reflectance was created. Thus, the soil heavy metal concentration of As, Cd and Zn of the soil samples can be retrieved with the reflectance spectra. Then the distributions of the soil heavy metal concentration of As, Cd and Zn were obtained with the interpolation method in study area in March and in August 2012 respectively.
authors.forename: Lian
authors.initials: L
authors.lastname: Song
authors.forename: Ji
authors.initials: J
authors.lastname: Jian
authors.forename: De-Jun
authors.initials: DJ
authors.lastname: Tan
authors.forename: Hong-Bin
authors.initials: HB
authors.lastname: Xie
authors.forename: Zhen-Fu
authors.initials: ZF
authors.lastname: Luo
authors.forename: Bo
authors.initials: B
authors.lastname: Gao