Facta universitatis - series: Physics, Chemistry and Technology 2010 Volume 8, Issue 1, Pages: 1-13
https://doi.org/10.2298/FUPCT1001001T
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Trace element content in urban tree leaves and SEM-EDAX characterization of deposited particles
Tomašević Milica (Institute of Physics, Belgrade)
Aničić Mira (Institute of Physics, Belgrade)
Leaves of common deciduous trees: Aesculus hippocastanum and Tilia spp. from
three parks within the urban area of Belgrade (Serbia) were studied as
biomonitors of trace elements (V, Cr, Fe, Ni, Cu, Zn, As, Cd, and Pb) air
pollution. Using a scanning SEM-EDAX, the size, size distribution, morphology
and chemical composition of individual particles were examined on adaxial and
abaxial surfaces of the leaves. Morphological and chemical composition
indicated that the most abundant particles were soot and dust with minor
constituents such as Pb, Zn, Ni, V, Cd, Ti, As, and Cu. Total element
concentrations in the leaves were determined by ICP-OES and ICP-MS. This
investigation included spatial, seasonal, and temporal variations in leaves
of the selected species. The leaves of A. hippocastanum showed a
significantly higher elements concentration and more consistency in trend of
element accumulation during the vegetation season in the period 2002-2006
than Tilia spp., so it may be considered as a more suitable species for the
assessment of trace element atmospheric pollution, especially Pb and Cu which
correlated with the bulk deposition data.
Keywords: deciduous tree leaves, particles deposition, SEM-EDAX, trace element, ICP-OES, ICP-MS
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