Influence of organic matter from urban effluents on trace metal speciation and bioavailability in river under strong urban pressureZ. Matar, G. Varrault, G. Chebbo, M. Troupel, L. Boudhamane, E. Uher and C. GourlayE3S Web of Conferences, 1 (2013) 41004DOI: https://doi.org/10.1051/e3sconf/20130141004