Assessment of heavy metals emission from traffic on road surfaces |
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Authors: | Sudip K Pal Steve G Wallis Scott Arthur |
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Institution: | (1) Institute of Soil Research, University of Natural Resources and Applied Life Sciences, Peter-Jordan-Str. 82, 1190 Vienna, Austria |
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Abstract: | This study aims to analyse RDS heavy metal concentrations on road deposited sediment (RDS) using Riccarton Campus of Heriot-Watt
University, Edinburgh, Scotland as a study site. RDS samples were collected at two transverse positions from different sites
over a 4 month period in order to describe the influence of traffic on heavy metal emissions. The heavy metal concentrations
of the RDS were determined by strong nitric acid digestion and atomic absorption spectrometry. The mean concentrations for
Zn, Cu, Cd, Cr, Ni, Pb and Fe were found to be 213, 57, 1, 16, 15, 118, and 13497 mg kg-1 from samples near to the curb and
211, 79, 2, 15, 9, 35, and 14276 mg kg−1 from samples 1 m from the curb respectively. Furthermore for both positions the highest concentrations for all metals were
associated with the finer fraction (<63 μm) and stronger correlations between the metals were found further from the curb
than near the curb, indicating that metals accumulating on the road surface further from the curb may likely be from the same
source (traffic), while the sources of metals near the curb are more diverse. |
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Keywords: | |
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