Spatial Analysis of Heavy Metal Pollution in Road-Deposited Sediments Based on the Traffic Intensity of a Megacity

Population growth has led to the intensification of average daily traffic (ADT), highlighting vehicles as one major sources heavy metal (HM) pollution in cities. The objective this paper is conduct a spatial analysis HM associated with road-deposited sediments (RDSs), based on ADT observed main roads Latin American megacity (Bogotá, Colombia). following risk indices were considered: Geoaccumulation Index (Igeo), Integrated Pollution (IPI), Ecological Risk (ERI), Comprehensive Potential (CERI), Hazard (HI), and Carcinogenic (CRI). findings confirm that size fraction < 250 μm most suitable for studying HMs RDS from considered. best indicative relationship are Ni, Cu, Pb. Pb attention, Cr gains positions its toxicity level during evaluation ecological, non-carcinogenic, carcinogenic risks, respectively. Finally, linear regression models developed between each considered have better fit (R2 > 0.910) compared concentrations 0.322).