Levels of PM10, PM2.5 and PM1 and Impacts of Meteorological Factors on Particle Matter Concentrations in Dust Events and non Dusty Days

The aim of study was to measure particle matter concentration (PM1, PM2.5 and PM10) during normal, semi-dust and dust-event days. The impacts of some meteorological factors on particle matter concentrations were also investigated. Samples were collected by Grimm aerosol technik (GmbH model 1/108 Germany) from November 2011 to May 2012. Temperature, humidity, wind speed and UV index were obtaind from the website (www.Weather.ir). The concentration of particulate matter PM1, PM2.5, PM10 in dust event days was 10, 6 and 2 times higher than normal days, respectively. The highest concentration of particle matter was February in winter. There was significant relationship between the particulate matter concentration with temperature and wind speed (P<0.05). The concentration of particulate matter affected by traffic, crowded, humidity and temperature. These factors increased particulate matter concentration specially when was with inversion.