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Impact
of Auto Exhaust Lead Pollution on Vegetation in Union Territory
of Delhi
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Foreword
The autoexhaust
emissions from about one million vehicles in Delhi ,city are of a
major concern today. The number of petrol driven vehicles is far greater
than the diesel vehicles. Lead added in the petrol to improve its
antiknock property is emitted as the particulate matter. Road side
vegetation and soil are the immediate receptors of autoexhaust lead
emissions.
In order to assess the extent of autoexhaust lead pollution and study
its impact on the road side vegetation in Delhi city Central Pollution
Control Board has taken up studies systematically over a period of
time. The present report deals with the studies carried out from Janyary,
1984 to June, 1985, covering (i) assessment of traffic volume (ii)-
ambient air quality monitoring and (iii) impact assessment of plant
species exposed at selected traffic inter- sections in the city.
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The
planning, coordination and implementation of the field. and laboratory
programme of the project was done by Dr. D.B-: 8oralkar, S:cientist
'8' of the Air Pollution Control Cell with the support of a team comprising
Shri S.K. Tyagi, J.S.A, Shri S.8. Singh, J.S.A. (upto December 1984),
Shri N. Sjngh, F.A., Shri Mirajuddin, F.A., and Shri Amar Singh, Attendant.
More than 20 persons ranging from A.E.Es to Attendants and Drivers
assisted in traffic census conducted thrice in 1984 and monthly air
quality monitoring. Their efforts ~re acknowledged.
Drs. B. Segupta and S.K. Ghosh, Scientist 'Cs' of Air Pollution Control
Cell helped thr.oughout in planning and coordination of the work.
Useful sugges- tions and guidance of Shri N. Bagchi, S.E.E of Central
Board and Prof. C.K. I Varshney of J.N.U, New Delhi are also acknowledged.
The statistical analyses were done by Dr. D.P. Mukhopadhyay, J.S.A
under the guidance of Dr..N. J Das, Consultant (Statistics). Shri
lnder Raj Malhotra, Officer oh Special Duty, guided in getting the
enclosures and sign boards built..at the traffic ,. intersections.
The help received from Municipal Corporation' of Delhi, Puliilic Works
Department of Delhi Administration, Delhi Electric Supply Undertak'ing
and National Physical Laboratory, New Delhi are gratefully acknowledged.
This report prepared by Dr. D.B. Boralkar has been typed by Shri M.R.C.
Pillai, L.D.C and drawings prepared by Mrs. B. Basu. |
Dilip Biswas
Chairman, CPCB |
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