Mercury removal from liquid effluents of the chlor-alkali industry by using the biomass Sargassum sp L.G.S. Sobral, R. de Barros Lima, S.G.F. Leite et A.L.V. Fernandes J. Phys. IV France, 107 (2003) 1259-1262 DOI: 10.1051/jp4:20030529