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- In situ differentiation of labile/inert metal species in Brazilian tropical rivers by means of a time-controlled batch-procedure based on TEPHA resin
- Universidade Estadual Paulista (UNESP)
- Universidade Federal de Sergipe (UFS)
- ISAS Inst Analyt Sci
- Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
- Fundação para o Desenvolvimento da UNESP (FUNDUNESP)
- The 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.
- International Journal of Environmental Analytical Chemistry. Abingdon: Taylor & Francis Ltd, v. 91, n. 13, p. 1296-1309, 2011.
- Taylor & Francis Ltd
- humic substances
- lability, metals
- aquatic organic matter
- Acesso restrito
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