Inventario de cargas de metais a partir de fontes difusas de poluição

TL;DRAbstract

The urban runoff has been identified as substantial source of pollutants for the aquatic bodies. The lixiviation of construction materials, the vehicles and atmospheric deposition contribute significantly to the input of metals in these waters. The concentration of Cd, Cu, Pb and Zn was evaluated in samples obtained from constructive materials and roof, vehicle parts such as lubricating oil and wear of tires and brakes, and also from atmospheric deposition. Metals Cd, Cu and Pb were evaluated by an Atomic Absorption Spectrophotometer equipped with a Graphite Furnace (GFAAS) and Zn evaluation was carried out by Differencial Pulse Anodic Stripping Voltammetry (DPASV). The metals loads were estimated in a specific scenario and the resulting loads were in the order of kg year -1 . The tendency was Zn>>Pb>Cu>Cd. The application of non-structural BMP, such as regulation and environmental education, was simulated in the scenario These BMP may reduce about 10 % of Cd load, 33 % of Cu load, 24%

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