Abstract:

The atmosphere might seem limitless but about 95% of the air is contaminated with first 12 -15 KM above the earth surface. The quality of the air gets deteriorated as a result of emissions of contaminants from all the mans activities including energy generation, manufacturing of goods and disposal of waste. Thus, to evaluate the effect of Air pollution on physicochemical characteristics a comparative study was undertaken in tree bark of Acacia nilotica L. with reference to different pollution area of Indore city. The result showed the variation in pH values which was recorded from 4.7 to 6.9. The lowest pH 5.0 was found at MPA and VPA in rainy season.Electrical conductivity was higher at all pollution areas. Highest value of electrical conductivity was recorded at VPA in rainy season 297.3 µmohs/cm2.While maximum % increase over LPA was seen in summer season at polluted area.

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