REGRESSION DEPENDENCE OF COPPER CONCENTRATION IN THE SOIL AT THE OFFSET FROM THE LANDFILL OF SOLID MUNICIPAL WASTE

Abstract

In recent years the total area of the landfills of solid municipal waste and dumps, including overloaded, which violate the norms of ecological safety and are the objects of intensive ecological loading has considerably increased. This threatens with the pollution of the environment with chemical substances, causing chemical pollution of soil with heavy metals, in particular, copper. That is why, determination of the regression dependence of copper concentration in the soil on the distance to the landfills of solid municipal waste is a relevant scientific technical problem. The objective of the research is the determination of the regression dependence of copper concentration in the soils on the distance to the landfills of solid municipal waste. In the process of study the method of regression analysis of the results of single-factor experiments and other paired 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 coefficient was used. Regression was carried out on the base of the linearized transformations, which enable to reduce the 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", the program is protected by the Certificate of the State registration of the rights to the copyright object. Adequate regression power dependence of the copper concentration in the soil on the distance to the landfill of solid municipal waste has been obtained, the dependence can be used for the determination of the level of chemical pollution of the soil with the copper. Graphical interpretation of copper concentration dependence in the soil on the distance to the landfill of solid municipal waste has been constructed, it enables to illustrate the dependence and show the coincidence of the theoretical results with actual results on the level of 0.99798. It was established, that the distance from the landfill of solid municipal waste, where the soil pollution with copper does not exceed maximum permissible concentration, is 25.5 m.