CHARACTERISTICS OF ROAD-SEDIMENT CONTAMINATION BY HEAVY METALS AND PAHs IN THE NATAL URBAN AREA
Road deposited sediments. SDR. heavy metals. HPAs.
Road deposited sediment is formed by particles accumulated on the pavement surface that are capable of adsorbing a variety of contaminants from waste generated by vehicle traffic. These contaminants, once inhaled, cause serious damage to human health. The aim of this study is to investigate the contamination of road sediment by heavy metals (Cd, Pb, Hg, Cr, Ar, Cu, Zn) and of HPAs (mainly bezo (a) pyrene due to its high carcinogenic potential) in the urban area of Natal. Once collected, the samples will be analyzed in the laboratory to measure the concentration of heavy metals by atomic emission optical spectrometry (ICP-OES) and HPAs by gas chromatography coupled to a mass spectrometer detector (GC-MS). The obtained data will be submitted to a multivariate analysis (PCA) in order to characterize the types of source of pollutants analyzed. The obtained results can be used to subsidize the execution of the cleaning and sweeping actions of the roads in Natal/RN.