Temporal evolution and spatial distribution of heavy metals in a stormwater infiltration basin - Estimation of the mass of trapped pollutants

  • Le Coustumer S
  • Moura P
  • Barraud S
 et al. 
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Infiltration systems are widely used to manage stormwater in urban areas but questions about their long term sustainability need to be addressed. The possible pollution of the groundwater and the concentration of pollutant trapped in the soil are of major interest. This article focuses on the concentration of heavy metals found in the top layer of an infiltration basin. Two sampling campaigns have been undertaken 10 months apart and 200 samples were collected and analysed for lead (Pb), zinc (Zn) and copper (Cu). High concentrations were measured at the surface of the system; pollutant build up over time is clearly evident, especially in the lower lying areas, as well as higher concentrations in the oldest part of the system. Finally, the total mass of heavy metals trapped in the top layer of the systems are evaluated. © IWA Publishing 2007.

Author-supplied keywords

  • Efficiency
  • Heavy metals
  • Infiltration basin
  • Statistical analysis

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  • Sebastien Le Coustumer

  • Priscilla Moura

  • Sylvie Barraud

  • B. Clozel

  • J. C. Varnier

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