| NUKLEONIKA 2013, 58(1):109-112
CHEMICAL, MAGNETIC AND MOSSBAUER EFFECT ANALYSIS
OF ROAD DUST FROM EXPRESSWAY
Tadeusz Szumiata1, Michał Gawroński1, Bogumił Górka1, Katarzyna Brzózka1,
Ryszard Świetlik2, Marzena Trojanowska2, Monika Strzelecka2
1 Technical University of Radom, Department of Physics,
54 Krasickiego Str., 26-600 Radom, Poland
2 Technical University of Radom, Department of Environmental Protection,
27 Chrobrego Str., 26-600 Radom, Poland
Environmental dusts of urban and industrial origin are one of the most important factors responsible for air and soil pollution – mainly because of heavy metals content. In this work a dust collected from the acoustic barriers of E-77 expressway (Poland) has been investigated. Chemical analysis was performed by means of atomic absorption spectrometer with flame atomization (F-AAS). Fe, Al and Zn metals dominate in the investigated road dusts. Mössbauer spectra collected at room temperature enabled the identification of several iron-containing phases in the dust. Some traces of hematite and magnetite have been found as well as alpha-Fe phase in ferromagnetic state. A significant component could be interpreted as pure iron in paramagnetic state. The dominating doublet in the spectrum of high quadrupole splitting could correspond to iron carbonates. Complementary measurements of low-field AC magnetic susceptibility confirmed a different metal content in the road dust samples collected from different altitudes of acoustic barriers.
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