Abstract
Differential-pulse anodic stripping voltammetry with a mercury microelectrode is used for the determination of lead and cadmium in airborne particle matter from three sites representing different urban conditions. Airborne metals collected on a large-area glass fibre filter using a high-flow-rate pump are mineralised with nitric acid in autoclaves. Results for lead and cadmium concentrations are reported. Lead shows the highest concentrations at all sites (up to 2600 ng/m 3). Traffic is confirmed as the main source of this pollutant. The reliability of the method is tested by comparison with the results obtained with atomic absorption spectrometry; the differences were within 5–30%.
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