DETERMINATION ON THE DEPENDENCE OF LEAD CONCENTRATION IN THE SOIL ON THE DISTANCE FROM THE DISPOSAL SITE OF MUNICIPAL SOLID WASTE IN THE VILLAGE TISHNE, ZAKARPATSKA REGION

Abstract

In recent years the total area of the landfills of municipal solid waste and dumps, including the overloaded, which violate the norms of ecological security and are the objects of the intensive ecological loading has greatly increased on the territory of Ukraine. This process may cause the pollution of the environment with chemical substances, causing chemical pollution of soil, in particular agricultural grounds, with lead. The objective of the research is the determination of the regressive dependence of lead concentration in soil on the distance to the landfill of municipal solid waste in the village Tishne, Zakarpatska region, that is relevant scientific engineering problem. In the process of the investigation method of regression analysis of the results of single-factor experiments and other paired dependences with the selection of rational type of function from sixteen most widely used variants by the criterion of maximum value of the correlation factor was used. Regression was carried out on the base of the linearized transformations, which enable to reduce non-linear dependence to linear one. Determination of the coefficients of the regression equations was performed, applying the method of the least squares by means of the developed computer program “RegAnaliz”, protected by the Certificate of state registration of the right to the copyright object. Adequate regression power-logarithmic dependence of lead concentration in the soil on the distance to the landfill of municipal solid waste in the village Tishne, Zakarpatska region was obtained, it can be used for the determination of the level and area of the zone of chemical pollution of the soil with lead. Graphic interpretation of the dependence of lead concentration in the soil on the distance to the landfill of municipal solid waste is constructed, it enables to illustrate this dependence and show the coincidence of theoretical results with actual on the level of 0,98796. It was established that the distance from the landfill of municipal solid waste in the village Tishne, Zakarpatska region, at which the pollution of the soil with lead does not exceed the background level (boundary of the zone of weak pollution) is 135 m.