Open AccessPARAMETERS OF MATHEMATICAL MODELS FOR VERTICAL MIGRATION OF HEAVY METALS IN SOILS IN THE AREA OF LEAD AND ANTIMONY PLANT
Author(s) -
А. С. Фрид,
Т. И. Борисочкина
Publication year - 2019
Publication title -
bûlletenʹ počvennogo instituta imeni v.v. dokučaeva/bûlletenʹ počvennogo instituta im. v.v. dokučaeva
Language(s) - English
Resource type - Journals
eISSN - 2312-4202
pISSN - 0136-1694
DOI - 10.19047/0136-1694-2019-97-150-164
Subject(s) - antimony , soil water , pollution , sorption , humus , environmental science , heavy metals , diffusion , diel vertical migration , soil science , calcareous , environmental chemistry , geology , chemistry , inorganic chemistry , ecology , paleontology , physics , oceanography , organic chemistry , adsorption , biology , thermodynamics
The data on distribution of heavy metals in the soil profile ( Yuan et al., 2017 ) of the province Guangxi in southern China in the zone influenced by lead and antimony plant were analyzed. The soil is sod-calcareous and rich in humus. The averaged over the years and depth (“apparent”) parameters of diffusion and convective-diffusion models of migration in the area of combined soil pollution (only soil aerogenic pollution and in combination with the sewage waters) are estimated. The largest values of the diffusion parameters were obtained for Zn and Cd (n∙10–7 сm 2 /sec), the smallest values were obtained for Pb and Sb (n∙10–8 сm 2 /sec). When soil was flooded by waste waters, a reliable convective component of migration for Zn and Sb was noted. At the same time the peak of Zn concentration moved to the depth of 40–60 cm. Under these conditions there was no clear inverse correlation between the migration mobility and the amount of sorption of elements by the soil.