Abstract: The use of living organisms to control the air quality is a tool to focus. In this context, this study aims to assess the level of air contamination by lead (Pb), cadmium (Cd) and zinc (Zn) on living organisms in industrial, urban and rural area in Mohammedia, using pigeons as bioindicators of air pollution. To this purpose, a liver collection was performed on 40 pigeons (Columba livia) that were caught in four different sites in Mohammedia, classified according to the density of traffic and industrial activities and then analyzed by the method of spectrophotometry atomic absorption. The results indicate the presence of metals in all samples, the highest concentrations were found respectively in the industrial area, town center, Mimouza, the rural area (control site) for zinc the highest rates were recorded in the rural area. These results suggest that we can have two possible sources of contamination by heavy metals: road traffic and industrial activities.
Keywords: Air pollution, bioindicators, heavy metals, Mohammedia, pigeon.
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