Chemical analysis of surface layers of the dumps soil of the city of augustinópolis, tocantins

The dumps are considered potential sources of heavy metals, since various types of waste are disposed of inappropriately in this area and can contaminate the air, surface water and groundwater, and encouraging the spread of disease through vectors. This study aims to analyze the soil surface layers of the landfill in the municipality of Augustinópolis, Tocantins, about the presence of some heavy metals. It is a field research, with analysis of pH and heavy metals in the soil of the dump in order to compare the values obtained with the guiding values of the CONAMA resolution n ⁰ 420/2009. Thus, it was possible to observe that the municipality of Augustinópolis not adapted so far the requirements of the National solid waste Policy. The pH acid presented at different sampling points in the depths of 0-20 cm, 20-40 cm and 40-60 cm, and in some specimens also alkaline in the depths are complied with. With respect to heavy metals in the soil of that dump, it is necessary to point out that were found lead, copper, cadmium, manganese, zinc and nickel, however, at concentrations below the guiding values for prevention and intervention of CONAMA resolution No 420/2009 not considered toxic, however, can cause damage to the environment and public health.