Behaviour of heavy metals in the estuarine area of the Capibaribe River in the Northeast of Brazil F.M.M. Brayner, A.M. Freitas Barbosa, H.K. Phillipini da Silva et L. Vieira de Melo J. Phys. IV France, 107 (2003) 221-225 DOI: 10.1051/jp4:20030283