Characterisation of fine particulate matter level, content and sources of a kindergarden microenvironment in Belgrade city center

In the present work, we investigated polycyclic aromatic hydrocarbons (PAHs), metals and ions of indoor outdoor PM2.5 from 80 samples collected in microenvironment a kindergarten located Belgrade city center during weekdays, March to May 2010. The daily concentrations were much higher than WHO guidance value. Results show similar factor profiles identified by principal component analysis (PCA) positive matrix factorization (PMF). For environment, six components (PCs) PCA, seven factors PMF, respectively. PCs PCA attributed following sources: combustion processes, traffic emission, coal/oil combustion, mix (stationary sources/resuspension), road salt secondary aerosol. resulting PMF as representing soil dust, aerosol break wear. one more source, dust.