Computer Modeling of Zn and Ni Distribution in Technogenic Soils

Abstract

Based on computer modeling using geochemical parameters, new results of the interdependent distribution of mobile forms of heavy metals Zn and Ni in contaminated soil have been obtained. Modeling in Golden Software SURFER 8 made it possible to identify soil contamination halos - laterally module - in the zone of a hazardous gas station facility in the city. A three-dimensional skeleton model of the distribution of mobile forms of HM was obtained depending on the key parameter of soil organic carbon - Corg. The revealed picture of the distribution of metals adequately reflects the specificity of the individual chemical properties of Zn, Ni and clearly demonstrates the different efficiency of binding of their mobile forms with soil organic matter. The proposed approach of computer geochemical modeling can be recommended as a methodological guide for identifying the characteristics of behavior in the soil environment for other heavy metals. The revealed empirical dependencies prove the need to change approaches in the ecological assessment of territories in the conditions of technogenesis. Research also has a promising development, allows one to obtain new geochemical patterns and associations of elements in technogenic landscapes, which contributes to the development of the fundamental foundations of geochemical science.