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Research Article Open Access
Atmospheric samples of wet and dry depositions were collected on seasonal variation basis at various sampling sites situated in five different zones from an industrial city Kota, India during 2012-2013. The analytical results show seasonal and spatial variation in metal concentration (crustal and anthropogenic) during monitoring months. Average concentrations of heavy metals (Cu, Cd, Zn and Pb) were higher in winter and lower in summer and reversed trend was observed in crustal metals (Fe, Ca and Mg). Overall, heavy metal concentrations showed the following trend - Zn > Pb > Cu > Cd in both wet and dry depositions. Analysis of enrichment factor of heavy metals showed moderately enriched Cu, Cd, Zn, and Pb. The study clearly indicates that wet and dry depositions varied as function of sampling sites, seasons and distance from coal based thermal power plant.