Platinum, lead and cerium concentrations of street particulate matter (frankfurt am main, germany)

被引:20
作者
Zereini F. [1 ]
Wiseman C. [2 ]
Beyer J.M. [1 ]
Artelt S. [3 ]
Urban H. [1 ]
机构
[1] Institute of Mineralogy, J. W. Goethe-University of Frankfurt, D-60054 Frankfurt am Main
[2] Centre for Environmental Research, J.W. Goethe-University, D-60054 Frankfurt am Main
[3] Innovation Relay Centre, D-90403 Nürnberg
关键词
Airborne particulate matter; Ce; Cerium (Ce); Lead (Pb); Palladium (Pd); Pb; Pd; PGE; Platinum (Pt); Platinum group elements (PGE); Pt; Review articles; Rh; Rhodium (Rh); Road dust; Street particulate matter;
D O I
10.1007/BF02986484
中图分类号
学科分类号
摘要
Road dust samples were collected in and around various traffic areas in Frankfurt am Main, Germany and analyzed in terms of their chemical composition using 1CP-MS, AV, XPS, TXRF and GF-AAS methods. Platinum (Pt), lead (Pb) and cerium (Ce) were the focus of analysis. Street particulate matter or dust is primarily composed of quartz, clay minerals, soot and organic substances and, through its transport by wind and precipitation, is a precursor for sediments and soils. Particle sizes are variable with the largest having a maximum diameter in the range of 10 to 25 μm. Sample locations included the A5/A67 Autobahn (i.e. highway), various inner city streets, two tunnels and three indoor car parks. The average Pt concentrations in the samples ranged from highest to lowest in the following order: Autobahn, inner city streets, indoor car parks and tunnels. Pb concentrations were found to display a similar trend. Ce concentrations, in contrast, exhibited a different pattern with the highest amounts being found in samples collected from the inner city. Pt concentrations in road dust appear to be positively related to both traffic density and speed of travel. Elevated Pt concentrations in particulate matter samples collected in indoor car parks, however, suggest that platinum metals can also be emitted at low speeds. The height at which samples are collected can also strongly influence the concentrations found. Specifically, samples taken at a height of <1.5 m generally display the highest concentrations. Surface particle analysis using XPS to determine the presence of Pt species could not be conducted for the two tunnel samples as concentrations fell below the detection limit. Our results, however, indicate the presence of elevated atmospheric Pt concentrations. © ecomed Publishers. D-86899 Landsberg. Germany.
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页码:188 / 195
页数:7
相关论文
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