 ISSN 1392-110X
ISSN 2029-056X (online)
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2007 m. Nr. 2
 Variation of trace element accumulation in topsoil near
the Vilnius–Kaunas highway
Rimantė ZINKUTĖ, Evelina BRANNVALL, Ričardas TARAŠKEVIČIUS
The aim of the research was to distinguish from a group of 22 trace elements (Ag, B, Ba, Co, Cr, Cu, Ga, Li, Mn, Mo, Nb, Ni, Pb, Sc, Sn, Sr, Ti, V, Y, Yb, Zn and Zr) the main elements associated with traffic pollution and road construction, which are well accumulated in topsoil, basing on their real total contents determined by OAES in four different cross-sections of the Vilnius–Kaunas highway connecting the two largest cities of Lithuania in two sampling periods (1991 and 2005) as well as to analyse the areal and temporal variation of their accumulation. The main elements are the following: Pb, Zn, Cu, Mo, Sn, Sr. The main regularity of their areal variation in all cross-sections is the highest additive index of their accumulation (Z6) in the nearest zone (at a distance <15 m from the hard shoulder). The main regularity of the temporal variation is the highest increase of Z6 in a cross-section with unfavourable conditions for dispersion of pollutants, where there is a relief barrier on the both sides of the highway. Monitoring of cross-sections is recommended.
Keywords: trace elements, roadside topsoil, areal and temporal variation, traffic pollution, road construction, Lithuania
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