Metal water-sediment interactions and impacts on an urban ecosystem

Lundy, Lian ORCID: https://orcid.org/0000-0003-1155-4132, Alves, Luciana, Revitt, D. Mike and Wildeboer, Dirk ORCID: https://orcid.org/0000-0003-1298-7511 (2017) Metal water-sediment interactions and impacts on an urban ecosystem. Proceedings of the 14th IWA/IAHR International Conference on Urban Drainage. In: 14th IWA/IAHR International Conference on Urban Drainage, 10-15 Sept 2017, Prague, Czech Republic. . [Conference or Workshop Item]

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Abstract

The metal loadings and distributions are determined in water and sediment samples collected from 11 sites within the Lower Lee catchment (London, UK). Total concentrations of Cd, Cu, Pb, Hg, Ni, Sn and Zn indicate exceedances of relevant environmental water quality standards/sediment quality guidelines. Mean metal sediment concentrations were found to be highest for Zn (499.9±264.7 µg/g), Pb (175.7±83.0 µg/g) and Cu (141.1±111.0 µg/g) with Zn demonstrating elevated mean water concentrations (17.2±13.8 µg/l) followed by Ni (15.6±11.4 µg/l) and Cu(11.1±17.8 µg/l). Dynamic relationships between water and sediment phases
influence metal distributions throughout the catchment.

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