Mapping methods for assessing soil pollution with heavy metals in the industrial conditions of Aktobe region

Abstract

The paper conducted a study on soil pollution with heavy metals in the Aktobe region using mapping methods. Evaluation and information maps have been developed in the GIS environment describing the spatial distribution of chromium (Cr), nickel (Ni), arsenic (As), molybdenum (Mo), cobalt (Co), zinc (Zn), lead (Pb), copper (Cu), cadmium (Cd), boron (B) in the soil. The scientific novelty of the study is to determine the concentration of heavy metal propagation based on inversely weighted distance interpolation (IDW). The paper describes the results of a field soil survey performed in sanitary protection zones (SPZ) of Donskoy Ore Mining and Processing Plant and Aktobe Ferroalloy Plant. Soil samples were examined for chemical analysis in the laboratory. The determination of heavy metals was carried out on the basis of chemical analysis by spectrometry. The results of the research represent a comprehensive cartographic model, which indicates sampling maps and the spatial distribution of individual elements, which make it possible to determine areas of increased concentration of heavy metals.