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P.S.Khillare, Bharatraj Meena and Tejveer Singh, School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India


Delhi, the capital of India occupies prominent place in the world environmental map because of its dubious distinction as one of the most polluted cities of the world. To restore its air quality, a number of command and control instruments have been applied in the past few years. Concerned over growing pollution problem in Delhi, the honorable supreme court of India in 1998 issued the direction that entire city bus fleet to be steadily converted to single fuel mode-CNG-by 31 March 2001.The authors have been monitoring PM10 concentration at strategic locations in Delhi since 1998.It has been observed that there is a downward trend in PM10 concentration in Delhi. The paper attempts to investigate whether and how various control measures have helped in improving air quality in Delhi. The paper concludes with the suggestion that control of particulate pollution in Delhi requires development and adoption of effective transport policies besides command and control instruments.

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