TY - JOUR N2 - Concentrations and elemental composition of fine (PM2.5) and coarse (PM2.5-10) ambient particles, at two sampling points located at the same urban background sites, were investigated. The points were 20 m distant from each other and at various heights (2 and 6 m) above the ground. A dichotomous sampler, equipped with a virtual impactor, and a cascade impactor were used to sample the dust. An X-ray fluorescence spectrometer was used in the elemental analyses. The investigations revealed heterogeneity of the spatial distribution and the elemental composition of suspended dust at the investigated urban background site. Coarse dust, whose concentration at 2.0 m above the ground was affected by secondary emission from roads, soil and other local low-level sources in some periods, appeared more heterogeneous. L1 - http://www.czasopisma.pan.pl/Content/85479/mainfile.pdf L2 - http://www.czasopisma.pan.pl/Content/85479 PY - 2011 IS - No 2 KW - particulate matter KW - PM2.5 KW - fine dust KW - PM2.5-10 KW - coarse dust KW - chemical composition KW - heavy metals KW - elements KW - virtual impactor KW - cascade impactor KW - energy dispersive X-ray fluorescence KW - EDXRF KW - spectrometer KW - urban background KW - spatial distribution KW - secondary emission KW - enrichment factor A1 - Rogula-Kozłowska, W. A1 - Błaszczak, B. A1 - Klejnowski, K. PB - Polish Academy of Sciences VL - vol. 37 DA - 2011 T1 - Concentrations of PM2.5, PM2.5-10 and PM-Related Elements at Two Heights in an Urban Background Area in Zabrze (Poland) UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/85479 T2 - Archives of Environmental Protection ER -