Abstract
The aim of the present study is to investigate the concentrations of some heavy metals (cobalt, cadmium, lead, nickel and chromium) in the leaves of plants viz: neem (Azadirachta indica), kaner (Nerium oleander L.), Ashok (Saraca indica L.) and imli (Tamarindus indica) around the polluted and non polluted sites near Agra region, India. Heavy metal concentrations in leaves were determined by Atomic Absorption Spectrophotometer (AAS). According to our findings the order of heavy metals in plants leaves were found in as follows: Co>Pb>Ni>Cr>Cd. Correlation between heavy metals in different plants at different sites were calculated for each metal separately and a positive correlation is observed. The presence of these metal ions in plant leaves explain the fact that these plant leaves are good bioindicators and can be used in air pollution monitoring studies in industrial areas.
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