Goveia, Danielle [UNESP]Lobo, Fabiana A. [UNESP]Bellin, Iramaia C.Fraceto, Leonardo F. [UNESP]Menegario, Amauri A. [UNESP]Burba, PeterRosa, Andre H. [UNESP]2014-05-202014-05-202011-01-01International Journal of Environmental Analytical Chemistry. Abingdon: Taylor & Francis Ltd, v. 91, n. 13, p. 1296-1309, 2011.0306-7319http://hdl.handle.net/11449/187The present study deals with a new analytical procedure based on a cellulose diffusion membrane and immobilised tetraethylene-pentamine-hexaacetate chelator (DM-TEPHA) for an in situ differentiation of labile and inert metal species in aquatic systems. The DM-TEPHA system was prepared by placing TEPHA chelator in pre-purified cellulose bags and in situ applied immersing the system in two Brazilian rivers to study the relative lability of metal species (Cu, Pb, Fe, Mn and Ni) as a function of the time and the quantity of exchanger, respectively. The procedure is simple and enables a new perspective for understanding the complexation, transport, stability and lability of metal species in aquatic systems rich in organic matter.1296-1309engwaterhumic substanceslability, metalsaquatic organic matterArtigo10.1080/03067319.2010.484883WOS:000298154700006Acesso restrito0000-0002-2042-018X