Rajshekar S Hiremath, DR MAYANAIK, NAIK


The present study aims to evaluate the Ambient Air Quality status at ten prominent locations in Bangalore city for the year 2012 and 2013. This paper highlights the possible causes of worsening air quality. The selected sampling sites represent three different anthropogenic activities consisting of sensitive, residential, commercial and industrial area. The selected parameters, to judge the quality of air, were Sulphur Dioxide (SO2), Nitrogen Dioxide (NOx) Respirable Suspended Particulate Matter (RSPM) which gives a fair idea of the pollution load carried by the air. The data is interpreted in the form of general patterns, average values and seasonal variations.
The annual average concentration of RSPM was well above the prescribed standards at all the selected sites, however concentration of SO2 was much below the national standards, but NOx was although below the permissible limits showed an increasing trend. Exceedence Factors calculated show that all areas are severely polluted as far as RSPM is concerned and low to moderately polluted for SO2 and NOx respectively. The average of SO2, NOx and RSPM concentrations were found to be 13 to 16µg/m3 and 13 to 15µg/m3, 29 to 31µg/m3 and 27 to 30µg/m3, 62 to 184µg/m3 and 74 to 169µg/m3 respectively. This study reports that the maximum SO2, NOx and RSPM values occurred during the winter with minimum values occurring in the summer, which can be attributed to a combination of meteorological conditions and photochemical activity.
Whereas in the seasonal variations, RSPM concentration was above the safety limits, SO2 was found to be below the National Ambient Air Quality Standards (NAAQS) and NOx showed an increasing trend over the years at all the sites. Results show that RSPM was the prominent pollutant in the ambient air environment of Bangalore city. Spatial interpolation was carried out using Inverse Distance Weighted Technique (IDWT) to create GIS maps, depicting the ambient air quality contours, which explains the changes in the ambient air quality characteristics.


Basavaraj Paruti and B. Santaveeranagoud, “Air Pollution Index: Geospatial Model”, International Journal of Environmental Engineering and Management, Vol 2, November 2011, pp. 149-157.

CPCB & MoEF, “Guidelines for Ambient Air Quality Monitoring”, National Ambient Air Quality Monitoring Series: NAAQNS/25/2003-04, July 2003.

CPCB, “National Ambient Air Quality Status and Trends in India-2010”, National Ambient Air Quality Monitoring, NAAQMS/ 35 /2011-2012. MOEF.

M. Anji Reddy, “Remote Sensing and Geographical Information System”, 3rd edition B.S. publications (2006).

Mario J. Molina and Luisa T. Molina. “Megacities and Atmospheric Pollution”, Journal of the Air & Waste Management Association, Vol 54, June 2004, pp 644-680.

Nagappa. B and Sharathchandra. H C, “Status of Ambient Air Quality in Urban Centers of Karnataka”, Indian Journal of Air Pollution Control Vol.VIII No.2 September 2008 pp 57-69.

Rao. C S “Environmental Pollution Control Engineering”, Wiley Eastern Limited, 1991.

Shashidhar, Krishna Kanth, Nageswara Reddy, Singh V.K, Mahapatra S.K. “Ambient Air Quality Monitoring for Warangal City”, Department of Civil Engineering, National Institute of Technology, Warangal.

Subrata Chattopadhyay, Srimanta Gupta, Raj Narayan Saha, “Spatial and Temporal Variation of Urban Air Quality: A GIS Approach”, Journal of Environmental Protection, Vol 1, Sep 2010, pp 264-277.

Vineeta Shukla, Poonam Dalal & Dhruva Chaudhry, “Impact of Vehicular Exhaust on Ambient Air Quality of Rohtak City, India”, Journal of Environmental Biology, Vol. 31(6), Nov 2010, pp 929-932.

Viney P. Aneja A. Agarwal, Paul A. Roelle, “Measurement and Analysis of Criteria Pollutants in New Delhi, India”, Department of Marine, Earth and Atmospheric Science, North Carolina State University, Environmental International, Vol. 27, 2001.pp 35-42.

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