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PubMed · 12733022

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

L P C Romão·G R Castro·A H Rosa·J C Rocha·P M Padilha·H C Silva
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Abstract

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.

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BrazilCopperIonsSoilUltrafiltrationWaterJournal ArticleResearch Support, Non-U.S. Gov't

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L P C Romão, G R Castro, A H Rosa, J C Rocha, P M Padilha, H C Silva. 2003-02-06. Tangential-flow ultrafiltration: a versatile methodology for determination of complexation parameters in refractory organic matter from Brazilian water and soil samples.. https://doi.org/10.1007/s00216-002-1728-6

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