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- Title
Perturbation of Background Atmospheric Black Carbon/PM1 Ratio during Firecracker Bursting Episode.
- Authors
Majumdar, Deepanjan; Gavane, Ashok Gangadhar
- Abstract
Perturbation in ambient particulate matter (PM1, PM2.5, PM10) and black carbon (BC) concentrations was studied during a firecracker bursting episode in Diwali (Festival of Lights) celebrations in Nagpur, India. Firecracker bursting resulted in greater escalation in fine particulates over coarse particulates while PM2.5 was found to be dominated by PM1 concentration. On the Diwali day, daily mean concentration of PM2.5 and PM10 exceeded Indian National Ambient Air Quality Standards by over 1.8 and 1.5 times, respectively, while daily mean BC concentration on the same day was almost two times higher than the previous day. The BC/PM1 ratio reduced remarkably from about 0.26 recorded before firecracker bursting activity to about 0.09 during firecracker bursting on Diwali night in spite of simultaneous escalation in ambient BC concentration. Such aberration in BC/PM1 was evidently a result of much higher escalation in PM1 than BC in ambient air during firecracker bursting. The study highlighted strong perturbations in ambient PM1, PM2.5, PM10 concentrations and BC/PM1 during the firecracker bursting episode. Altered atmospheric BC/PM1 ratios could serve as indicators of firecracker-polluted air and similar BC/PM1 ratios in local and regional air masses might be used as diagnostic ratios for firecracker smoke.
- Subjects
SOOT; FIRECRACKERS; AIR pollution
- Publication
Asian Journal of Atmospheric Environment (AJAE), 2017, Vol 11, Issue 4, p322
- ISSN
1976-6912
- Publication type
Article
- DOI
10.5572/ajae.2017.11.4.322