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HEALTH RISK ASSESSMENT FOR AIR POLLUTION MANAGEMENT IN INDIA: A CASE STUDY OF DELHI CITY
Jai Shanker Pandey1, Rakesh Kumar2 and Sukumar Devotta3 1 National Environmental Engineering Research Institute (NEERI), Nagpur – 440 020, India. 2 National Environmental Engineering Research Institute, Mumbai – 400 018, India 3 Director, National Environmental Engineering Research Institute (NEERI), Nagpur – 440 020, India.

ABSTRACT

Health risk assessment exercise has been carried out for Delhi City in India with a view to demonstrate the need of such analysis for an appropriate decision making. Exposure doses have been estimated for three pollutants : suspended particulate matter (SPM), nitrogen dioxide (NO2) and sulfur dioxide (SO2). Three zones have been considered viz. residential, industrial and commercial for such estimation as the data collection locations are also differentiated on this basis. For analyses, the total population has been divided into three age-classes : infants, children and adults belonging respectively to (0-2), (2-16) and (16-70) age groups. The present study, inter alia, points out that children suffer maximum risk due to air pollution and SPM and NO2 respectively turn out to be 36.5 and 4 times more risky than SO2. The exposure risk assessment is based on age-specific breathing rates, body weights and occupancy factors for different zones. For estimating exposure doses maximum concentrations for SPM, NO2 and SO2 monitored in 2002 have been used. Sources responsible for these pollutants can be addressed for the reduction of exposure levels to various population groups.

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