The plant availability of auto-cast platinum group elements |
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Authors: | P S Hooda A Miller A C Edwards |
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Institution: | (1) Centre for Earth and Environmental Sciences Research, Kingston University London, Kingston upon Thames, KT1 2EE, UK;(2) Natural and Social Sciences, University of Gloucestershire, Cheltenham, GM50 4AZ, UK;(3) Nether Backhill, Ardallie by Peterhead, AB42 5BQ, UK |
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Abstract: | The introduction of automobile catalysts has raised environmental concern, as this pollution control technology is also an
emission source for platinum group elements (PGE). The main aim of this study was to assess soil and grass PGE concentrations
in soils adjacent to five road networks. The soil and grass samples were collected from four distances at each site; they
were 0, 1, 2 and 5 m from the road edges. The maximum soil Pt, Rh and Pd concentrations were measured at the road perimeters.
Pd concentrations were much higher than Pt or Rh, possibly due to differences in its use, emission and/or soil chemistry.
Rh and Pt soil concentrations accounted for 66 and 34% (P < 0.01) of the variability observed, respectively, in their plant concentrations. Grass Pd concentrations had no relationship
with its total soil concentrations. |
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Keywords: | PGE Platinum Palladium Rhodium Plant uptake |
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