Journal of Environmental Biology

Impact of vehicular exhaust on ambient air quality of Rohtak city, India

 

Vineeta Shukla¹, Poonam Dalal¹ and Dhruva Chaudhry*²

 

¹Department of Biosciences, M.D.University, Rohtak - 124 001, India

²Medicine and Critical Care Post Graduate Institute of Medical Sciences, Rohtak - 124 001, India

 

(Received: August 25, 2008; Revised received: November 30, 2009; Accepted: December 10, 2009)

 

Abstract: In the present study, ambient air quality of Rohtak city (Haryana) was monitored by High Volume Sampler .The selected parameters to judge the quality of air were Sulphur dioxide (SO₂), Nitrogen dioxide NO₂), Ozone (O₃) and Suspended particulate matters (SPM) which give a fair idea of pollution load carried by the air. The monitoring data were collected from six sites randomly selected in Rohtak city. Sulphur dioxide was found below the permissible limits of National Ambient Avo Quality Standards (NAAQS) at all the sites. Higher concentration of SO₂ was observed during winter in comparison to summer and monsoon seasons. Nitrogen dioxide concentration was found to be above the prescribed standards of NAAQS at four sites in winter season. Ozone concentration was found below the prescribed standards (NAAQS), but its concentration was higher in summer season as compared to winter. Suspended particulate matter concentration was observed above the safety limits at all the sites in all three seasons.

Key words: SPM, Sulphur dioxide, Nitrogen dioxide, Ozone

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