IJEP 41(4): 432-436 : Vol. 41 Issue. 4 (April 2021)
1. University of Rajasthan, Department of Statistics, Jaipur, Rajasthan, India
2. Amity University, Jaipur, Rajasthan, India
Abstract
Ambient concentrations of nitrogen oxides (NO2), sulphur dioxide (SO2) and respirable suspended particulate matter (RSPM) were measured from March 2010 to November 2018 in the centers of six sites (Ajmeri gate, Chandpole, Board office Jhalana Dungri, MIA RIICO Office, RO Vidhyadhar Nagar, VKIA) Jaipur, Rajasthan, India. The data consist of monthly average of NO2, SO2 and RSPM. The measurement were made in an effort to characterize air pollution in the urban environment of Jaipur and assist in the development of an air quality index. The yearly average of NO2, SO2 and RSPM concentrated were taken to find out the trend. It is observed that the maximum NO2, SO2 and RSPM was occurred during winter and minimum values were occurred in summer which is due to the combination of metrological conditions and photochemical activities in the region. The ratio of SO2/NO2 (~0.19) indicates that point sources are contributing to SO2 pollution in the city. Further all measured concentration of RSPM exceeded the National Ambient Air Quality Standards (NAAQS) execept for NO2 and SO2. Yearwise trend of NO2, SO2 and RSPM of different station are obtained by using the least square method.
Keywords
Sulphur dioxides, Nitrogen oxides, Respirable suspended particulate matter, Air quality index, National air quality index by CPCB, Ambient air quality, Environmental protection agency, Planetary boundary layer
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