Fighting against POLLUTION to Save Environment

  • Fighting against POLLUTION to Save Environment

Fighting against POLLUTION to Save Environment

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List of Publications of Dr. Dilip Boralkar

Autoexhaust lead pollution of roadside ecosystem in Delhi (Part II):

Proc. Int. Conference on Environment Planning & Management, University of Roorkee (India),
April 5-7, 1990, pp. 204 – 210.

D.B. Boralkar, S.K. Tyagi** and B. Sengupta
West Zone Office,Central Pollution Control Board 46-B, Gautamnager, VADODARA,390 OO7,India
**Central Pollution Control Board, "Parivesh Bhavan" East Arjun Nagar, DELHI, 110 032, India

CONCLUSION

Autoexhaust lead pollution contaminates the soil along the roadside. Polyalthia, Alstonia and Eugenia were found suitable for roadside plantation thereby helping in mitigation of lead pollution. Increase in the lead concentration in ambient air should be a cause of concern and it recalls the need for the ambient air quality standard for lead and action for effective control of autoexhaust lead pollution. Because of adverse effects of lead on the environment in general and roadside ecosystem in particular, phasing out of the alkyl lead additives in gasoline would be necessary.

ACKNOWLEDGEMENT

Authors gratefully appreciate the cooperation extended by colleges and thank Central Pollution Control Board for its permission to present this paper.

REFERENCES
  • A.P.H.A. (1977). Methods: air sampling and analysis. M.Katz(Editor). American Public Health Association, Washington.
  • Bayliss, David. (1983). Land use and motor vehicle in London. Industry and Environment; (6), 12-14.
  • Bhatnagar, V.S. (Editor), (1988). Proc. of the National Seminar on Environmental Pollution Control and Monitoring, October, 1986. Coun. Sci. Instr. Organisation, Chandigarh - 160020, India, 27-57.
  • C.P.C.B. (1985). Impact of Autoexhaust Lead Pollution on Vegetation in Union Territory of Delhi. Report No. EIAS/1/1985-86 of Central P.C. Board, Delhi 110032.
  • Jackson, M.L. (1958). Soil Chemical Analysis. Prentice Hall of India Pvt. Ltd., New Delhi (India).
  • Luhar, A.K, and Patil, R.S. (1986). Estimation of emission factors for Indian Vehicles. Indian J. Air Pollut. Contr., 7(4); 155-160.
  • Mathur, H.B., Gajendra Babu, M.K. and Subba Reddi, K. (1985). Emission Characteristics of a spark ignition engine operating on gasoline and Methanol. Indian J. Air Pollut. Contr., 6(2), 109-115.
  • Mishra, R. (1968) Ecology Work Book, Oxford and IBM Publishing Co. Calcutta, (India).
  • Smith, W.H. (1976). Lead contamination of the roadside ecosystem. J. Air Pollut. Contr. Assoc., 26(8), 753-766.

Table 1: Ambient air quality for lead (ng/cu.m, 09.00 to 19.00 hrs.) at different traffic intersections in the city of Delhi during August, 1985 to April, 1987

Sr. No. LOCATION TRAFFIC VOLUM
(No. of vehicles between 09:00–12:00 and 16:00–19:00 hrs.)		 SEASONS GEOMETRIC MEAN
OF TOTAL OBSERVATION
   MONSOON        WINTER         SUMMER
1985 1986 1985-86 1986-87 1986 1987 only April
01    TRAFFIC
   (i) DELHI GATE 30,000 or more 426 268 332 444 283 278 245
208–852 212–353 158–641 429–459 263–305 -
   (ii) INDIA GATE 25,000 to 29,999 345 117 402 259 106 80 199
185–904 81–182 218–662 231–290 93–120 -
   (iii) RED FORT 20,000 to 24,999 572 station closed 583 station closed 231 station closed 459
366–1392 330–870 190–281
   (iv) ASHRAM 15,000 to 19,999 457 294 578 478 282 184 378
218–668 175–707 328–1376 447–512 236–338 -
   (v) AZADPUR Less than 15,000 341 222 411 447 221 357 310
224–768 118–658 230–911 300–665 123–396 -
02 CONTROL LOCATION
N.P.L. NURSERY		 Nil 140 42 118 227 31 250 89
125–155 30–75 48–212 225–228 225–228 -

Note: (A) @ Data based on 15, once-a-month observations.
(B) Seasonal variation is presented as geometric mean and range of values given in the parenthesis.

Table 2: Lead in Soil (micrograms/g) of the pots of different plant species and locations

Sr. No. Location Alstonia Eugenia Polyalthia Populus Putranjiva
May '86 Sept. '86 May '86 Sept. '86 May '86 Sept. '86 Dec. '86 Apr. '87 Dec. '86 Apr. '87 Dec. '86 Apr. '87
01 Delhi Gate 16 28 18 21 20 26 16 24 18 29 20 23
02 India Gate 14 18 22 28 17 27 12 18 14 24 16 26
03 Ashram 20 27 22 30 15 23 14 27 18 22 18 24
04 Azadpur 21 32 26 34 21 33 13 17 16 27 18 20
05 N.P.L. Nursery 12 16 14 19 13 19 11 16 14 18 15 18
1 2 3
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