Abstract
The present study was carried out for size distribution of aerosols at indoor environments covering six different locations in the Jawaharlal Nehru University campus using TSI AeroTrak Portable Particle Counter (APPC), during the year 2014–15. The instrument provides the particle counts in the ranges from 0.3 μm to 20 μm. After the investigation, total suspended particulate matters (TSPM) were observed in the following order: winter > monsoon > summer. The fine mode particles contributed more than 96% in comparison to coarse modes of particles. In number size distribution, a unimodal trend but with no characteristic seasonal variation was observed, however, a clear seasonal variation of modalities in surface area and volume size distributions was obtained. Both the unimodal and bimodal size distributions in surface area were observed. A slight shift in peak was also observed in the surface area and volume size distributions, which was attributed to be related to different characteristics in the kitchens and canteens of the indoor environment.
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