Spatial- Temporal Distribution Analysis of Particulate Matter in Air of Kermanshah City Using SMPS

The measurement of suspended particles in the atmosphere of indoor/outdoor environments are of great importance due to their destructive effects on human health. In this research, the number and size of suspended particles in different environments have been investigated. Note that the scanning system used to measure the size and distribution of suspended particles has been introduced for the first time by the Department of Physics, Razi University of Kermanshah. The suspended particles in the range of 10-650 nm are measured in indoor/outdoor environments under different circumstances such as traffic and precipitation. According to the results, the highest number of particles were measured in outdoor environment during high traffic period, i.e.1,498,304 particles per cubic meter. During the precipitation days, the number of suspended particles was reduced significantly to 474 particles measured per cubic meter, which indicates the importance of clean weather condition. In the indoor and outdoor environments (with low traffic), 3,471 and 20,409 particles per cubic meter are counted, respectively. Moreover, the pollution of the exhaust gases released from transportation facilities has been measured in the range of particles of 10-30 nm and is discussed in details.