Spatial Variability of Finer Particulate Matter (PM_2.5) Mass Concentrations over the Jammu Urban Area

Shivali Gupta¹, Akanksha Rajput¹ and Rakesh Kumar^1,

¹Department of Environmental Sciences, University of Jammu, JKUT, India

Cite this paper:
Shivali Gupta, Akanksha Rajput and Rakesh Kumar. Spatial Variability of Finer Particulate Matter (PM_2.5) Mass Concentrations over the Jammu Urban Area. Applied Ecology and Environmental Sciences. 2021; 9(4):465-469. doi: 10.12691/aees-9-4-6

Abstract

Atmospheric fine aerosols (PM_2.5) have become a major concern in the context of rapidly deteriorating urban air quality by significantly affecting air quality, visibility, human health, and the earth’s climate. In this work, PM_2.5 aerosol samples were collected during the summer (May-June) season at three different sites of Jammu urban area, Jammu and Kashmir. Significant site-specific spatial variation in PM_2.5 mass concentrations was observed. The highest mass concentration of PM_2.5 was observed at Site-2, a commercial hub with an average concentration 89.8 μg/m³ ± 34.7, and at Site-3, an Institutional area having an average PM_2.5 concentration 67.9 μg/m³ ± 28.7 while the lowest concentrations were reported at Site-1, a residential area having an average concentration of 49.4 μg/m³ ± 22.7. Besides, 22.2%, 77.8%, and 44.4% of the samples at Site-1, Site-2, and Site-3, respectively exceeded National Ambient Air Quality Standards (NAAQS) of 60 μg/m³ prescribed by CPCB. The high PM_2.5 in the commercial area can be attributed to higher vehicular movement and commercial activities. Site-3, University of Jammu, is an Institutional area where high concentrations of PM_2.5 are possibly due to high vehicular movement in the campus and the use of generators for power backup.

Keywords:
PM_2.5 NAAQS spatial variation

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