USAGE OF REGRESSION ANALYSIS METHOD FOR THE DETERMINATION OF BENZOPYRENE CONCENTRATION IN THE SOILS OF THE LANDFILLS AND REFUSE DUMPS OF SOLID MUNICIPAL WASTE

Abstract

In recent years the total area of the landfills and refuse dumps of solid municipal waste, including overloaded facilities and those, where the norms of ecological legislation are violated and are the objects of the intensive ecological loading has greatly increased in Ukraine. This may cause the pollution of the environment by chemical substances and leads to chemical pollution of the soil. Determination of the regression dependence of benzopyrene concentration in the soils of the landfills of solid municipal waste on the depth of measuring is an important scientific engineering problem. Aim of the research is to determine the regression dependence of benzopyrene concentration in the soils of the landfills of solid municipal waste on the depth of measuring. In the process of study the method of regression analysis of the results of single-factor experiments and other pair dependences with the selection of the rational type of function from sixteen most widely spread variants by the criterion of the maximum value of the correlation factor was used. Regression was carried out on the base of linearized transformations, which enable to reduce the non-linear dependence to linear one. Determination of the coefficients of the regression equations was carried out by means of the least squares method, using the developed computer program "RegAnaliz", protected by the Certificate of the state registration of the rights to the copyright object. Adequate regression power dependence of benzopyrene concentration in the soils of the landfills of solid municipal waste on the depth of measuring was obtained, the dependence was used for the determination of the dangerous depth of chemical pollution of the soils. Graphic interpretation of the dependence of benzopyrene concentration in the soils of the landfill of solid municipal waste on the depth of measuring is constructed, this interpretation enables to illustrate this dependence and show the coincidence of the theoretical results with the actual results on the level of 0.96975. It was established that the dangerous depth of chemical pollution of the soils of the landfill of solid municipal waste with benzopyrene is 152 mm.