Peachey, C., Sinnett, D., Wilkinson, M., Morgan, G., Freer-Smith, P. and Hutchings, T.
Deposition and solubility of airborne metals to four plant species grown at varying distances from two heavily trafficked roads in London.
Environmental Pollution, 157 (8-9).
- Accepted Version
Publisher's URL: http://dx.doi.org/10.1016/j.envpol.2009.03.032
In urban areas, a highly variable mixture of pollutants is deposited as particulate matter. The concentration and bioavailability of individual pollutants within particles need to be characterised to ascertain the risks to ecological receptors. This study, carried out at two urban parks, measured the deposition and water-solubility of metals to four species common to UK urban areas. Foliar Cd, Cr, Cu, Fe, Ni, Pb and Zn concentrations were elevated in at least one species compared with those from a rural control site.
Concentrations were, however, only affected by distance to road in nettle and, to a lesser extent, birch
leaves. Greater concentrations of metal were observed in these species compared to cypress and maple
possibly due to differences in plant morphology and leaf surfaces. Solubility appeared to be linked to the
size fraction and, therefore, origin of the metal with those present predominantly in the coarse fraction
exhibiting low solubility.
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