In the present investigation, comparative studies have been done, to find the effect of air
pollutants generated from the exhaust of industries and automobiles on the chrorophyll content of
leaves. The leaves samples of Azadirachta indica, Nerium oleander, Mangifera indica and- Dalbergia
sissoo were collected from areas with potentially higher and lower levels of air pollution Photosynthetic
pigments chlorophyll a, chlorophyll b and carotenoids were quantified. A reduction in the
photosynthetic pigments of plant leaves growing in higher polluted site as compared to non or less
polluted ones.