RARE ELEMENTS (ZR, NB, LA, CE AND HF) IN TRAFFIC EMITTED FERRIMAGNETIC PARTICLES FROM ROAD DUSTS
Abstract
In the present study, the presence and the elemental contents of some rare elements such as zirconium (Zr), niobium (Nb), lanthanum (La), cerium (Ce) and hafnium (Hf) in different fractions (bulk samples, non-magnetic fraction NMF and magnetic fractionMF) of road dusts from the city of Thessaloniki, were nvestigated. The mean Zr, Nb, La, Ce and Nb concentrations in the bulk road dust samples were 32.1, 5, 16.4, 40 and 0.9 μg g-1 ,αντίστοιχα.. On the other hand, the studied rare elements concentrations in magnetic fractions (MFs) were enriched and the enrichment ratios, defined as the concentration ratio of metals in MFs and NMFs, ranged between 1.9 (Ce) and 7.9 (Nb). Pearson’s correlation coefficients in the MFs indicated 3 groups of elements originating from common source: a) Zr-Hf-Cr-Cu-Mo-Sn-Sb, b) Nb-Ni-Cu-Mo-Sn and c) La-Ce. The significant correlations of the Zr, Hf and Nb with elements such as Cu, Sb, Sn and Mo which are characteristic of brake wear emissions indicated that the emission of these elements in the urban environment can also be attributed to vehicular traffic as they are highly associated with traffic emitted ferrimagnetic particles.
Article Details
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Bourliva, A., Papadopoulou, L., & Aidona, E. (2016). RARE ELEMENTS (ZR, NB, LA, CE AND HF) IN TRAFFIC EMITTED FERRIMAGNETIC PARTICLES FROM ROAD DUSTS. Bulletin of the Geological Society of Greece, 50(4), 2100–2107. https://doi.org/10.12681/bgsg.14261
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- Special Session: Enviromental Geochemistry
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