Tangential-flow ultrafiltration: a versatile methodology for determination of complexation parameters in refractory organic matter from Brazilian water and soil samples


Autoria(s): Romao, LPC; Castro, G. R.; Rosa, A. H.; Rocha, J. C.; Padilha, P. M.; Silva, H. C.
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/04/2003

Resumo

In this work the copper(II) complexation parameters of aquatic organic matter, aquatic and soil humic substances from Brazilian were determined using a new versatile approach based on a single-stage tangential-flow ultrafiltration (TF-UF) technique (cut-off 1 kDa) and sensitive atomic spectrometry methods. The results regarding the copper(II) complexation capacity and conditional stability constants obtained for humic materials were compared with those obtained using direct potentiometry with a copper-ion-selective electrode. The analytical procedure based on ultrafiltration is a good alternative to determine the complexation parameters in natural organic material from aquatic and soil systems. This approach presents additional advantages such as better sensibility, applicability for multi-element capability, and its possible to be used under natural conditions when compared with the traditional ion-selective electrode.

Formato

1097-1100

Identificador

http://dx.doi.org/10.1007/s00216-002-1728-6

Analytical and Bioanalytical Chemistry. Berlin: Springer-verlag Berlin, v. 375, n. 8, p. 1097-1100, 2003.

1618-2642

http://hdl.handle.net/11449/37012

10.1007/s00216-002-1728-6

WOS:000183199000020

Idioma(s)

eng

Publicador

Springer

Relação

Analytical and Bioanalytical Chemistry

Direitos

closedAccess

Palavras-Chave #complexation parameters #copper #organic matter #humic substances #ultrafiltration #ion-selective electrode
Tipo

info:eu-repo/semantics/article