Polychlorinatcd dibenzodioxins and dibcnzofurans (PCDD/Fs) arc present in the air either adsorbed on particulate matter or as vapor (minor part). They arc known to be effective carcinogenic and mutagenie agents. In this study dust samples from Lublin were collected for twelve months and analyzed for PCDD/Fs content. For the analysis of these samples classical extraction with a Soxhlet apparatus, double step clean-up based on SEC and charge-transfer interactions chromatography, and final analysis with GC-MS were applied.

Polychlorinated dibenzodioxins and dibenzofurans are present in the air either adsorbed on particulate matter or as vapor (minor part). They are most known carcinogens and mutagens. In this study dust samples from Lublin were being collected for 12 months and analyzed for the PCDD/Fs content. For the analysis of these samples classical extraction with Soxhlet apparatus, double step clean-up based on SEC and charge-transfer interactions chromatography, and finally analysis with GC-MS were applied. Results of the determinations were compared with results obtained by other authors.

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.