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BIBTEX RIS

Coeficientes de difusão de metais em materiais não convencionais (agarose e acetato de celulose) usados na técnica de difusão em filmes finos por gradientes de concentração

2012; Brazilian Chemical Society; Volume: 35; Issue: 7 Linguagem: Inglês

10.1590/s0100-40422012000700014

ISSN

1678-7064

Autores

Camila Destro Colaço, Lauren Nozomi Marques Yabuki, Amanda L. Alcântara, Amauri Antônio Menegário,

Tópico(s)

Water Quality and Pollution Assessment

Resumo

THIN FILMS TECHNIQUE.The DGT technique allows one to measure quantitatively free and labile metal species in aquatic systems.Nevertheless, for this approach, knowledge is required of the diffusion coefficients of the analytes in a diffusive layer.In this study, the diffusion coefficients of Hg(II), As(III), Mn(II), Mg(II), Cu(II), Cd(II) were determined in agarose gel and those of Ba(II), Cd(II), Cu(II), Mg(II), Mn(II) e Zn(II) in cellulose acetate membranes.These materials presented good performance and the reported results can be used as a data base for further DGT studies.

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