TY - JFULL AU - F. Halek and A. Kavousi and F. Hassani PY - 2009/10/ TI - Evaluation of Indoor-Outdoor Particle Size Distribution in Tehran's Elementary Schools T2 - International Journal of Chemical and Molecular Engineering SP - 521 EP - 525 VL - 3 SN - 1307-6892 UR - https://publications.waset.org/pdf/8988 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 33, 2009 N2 - A simultaneous study on indoor and outdoor particulate matter concentrations was done in five elementary schools in central parts of Tehran, Iran. Three sizes of particles including PM10, PM2.5 and PM1.0 were measured in 13 classrooms within this schools during winter (January, February and March) 2009. A laserbased portable aerosol spectrometer Model Grimm-1.108, was used for the continuous measurement of particles. The average indoor concentration of PM10, PM2.5 and PM1.0 in studied schools were 274 μg/m3, 42 μg/m3 and 19 μg/m3 respectively; and average outdoor concentrations of PM10, PM2.5 and PM1.0 were evaluated to be 22 μg/m3, 38 μg/m3 and 140 μg/m3 respectively. ER -