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STUDY OF URBAN AIR QUALITY – A CASE STUDY OF DELHI

This research is focus on how the concentration of five pollutant i.e. NO2, NO, 03, PM10, PM2.5 changes in the absence and presence of vehicle during the 24 hour a day and diurnal variation. Seasonal variation on the concentration change in the month of Diwali taking R K Puram location in Delhi from Jan to Dec 2014. A correlation test also performs between PM2.5 and PM10. Statistical analysis shows that the during winter season, the concentration build up is high due to inversion phenomena leading to low mixing height. Ozone value is high during summer season due to high solar insulations, which converts NOx in to Ozone. NOx value is high during winter months due to two reasons, inversion phenomena and use of room heating devices that emits NOx. The concentration in the pre Diwali month is greater than that of Diwali and both exceed up to the extreme dangerous level and it is found that 54.45% of PM10 is PM2.5. Finer size PM is generated mostly by vehicular emission and therefore on daily average, it can be stated that vehicular emission contributes 54% of PM2.5 of the PM10.



Real Time Impact Factor: Pending

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Keywords: Diurnal, NO2, NO, 03, PM10, PM2.5, etc

ISSN: 2395-4752

EISSN: 2348-4098


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