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Pt and Pd concentrations and source in urban roadside soils from Xuzhou, China

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Environmental Geology

Abstract

This investigation represented the preliminary study to characterize Pt and Pd concentrations and enrichment ratios in urban roadside soils. Roadside soil samples were analyzed by ICP-MS. Data from 21 roadside topsoil samples show medians of Pt and Pd concentrations are 2.9 and 2.8ngg−1, respectively. These values are higher than those of upper crust that average 0.4 and 0.4ngg−1, respectively. The relatively lower Pt and Pd concentrations are expected due to recent introduction of catalysts to China compared to the prolonged use of catalysts in Europe. Hierarchical clustering analysis indicates that Pt and Pd in Xuzhou urban roadside soils were mainly from the traffic emissions. Computation of enrichment ratios using the upper crust values as background levels suggests that the roadside soils had enrichment medians of 6.4 for Pt (range 2.5–11.75) and of 6.75 for Pd (range 2.75–9.25). Lower Pt/Pd ratios (range 0.35–2.86) in relation to similar studies in other countries were observed due to the different automobile catalytic converters. In general, fine fraction (<250μm) contains higher Pt and Pd concentrations compared to the coarse fraction (250–500μm).

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Authors and Affiliations

  1. School of the Environment, Nanjing University, 210093, Nanjing, China

    Xue Song Wang & Cheng Sun

  2. Department of Chemical Engineering, Huaihai Institute of Technology, Lianyungang, China

    Xue Song Wang

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  1. Xue Song Wang
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  2. Cheng Sun
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Correspondence to Xue Song Wang.

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Wang, X.S., Sun, C. Pt and Pd concentrations and source in urban roadside soils from Xuzhou, China. Environ Geol 56, 1129–1133 (2009). https://doi.org/10.1007/s00254-008-1213-4

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  • DOI: https://doi.org/10.1007/s00254-008-1213-4

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