[Estimation of soil's heavy metal concentrations (As, Cd and Zn) in Wansheng mining area with geochemistry and field spectroscopy].

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.