Análise da contaminação do solo por metais tóxicos provenientes de resíduos sólidos urbanos no município de Lábrea-AM

Abstract

Urban solid waste is a significant source of trace metals, originating from various activities such as bodywork shops, agricultural practices, industrial processes, and hospital facilities. This research aimed to analyze the presence of these metals in the soil of the Lábrea landfill, in the state of Amazonas, recognizing the threat they pose to the environment and public health. A field visit was conducted to the study area, followed by georeferencing and mapping. It was found that the disposal of solid waste and rejects is inadequately done, without any waste segregation procedures. Due to this situation, the presence of heavy metals was characterized. In order to cover the landfill area, 8 (eight) sampling points were randomly selected at a depth of 0-40cm. The following variables were determined: a) Organic Matter was determined by wet oxidation with potassium dichromate, and pH by distilled water; b) heavy metals such as Copper (Cu), Cadmium (Cd), Lead (Pb), Manganese (Mn), Chromium (Cr), Iron (Fe), Zinc (Zn), Cobalt (Co), and Nickel (Ni). The data obtained provide support for effective decision-making aimed at environmental remediation and prevention of adverse impacts on public health, reinforcing the need for more efficient policies in urban solid waste management. It was found that there was no presence for most of the Analyzed Metals; and a high content of organic matter was observed.