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Type: Artigo de periódico
Title: Study of complexation capacity and its relationship with some environmental variables in five reservoirs of the Tiete river system
Author: Borges, ECL
Mozeto, AA
Neves, EEA
Neto, WB
Bezerra, JM
Abstract: The copper and cadmium complexation properties in natural sediment suspensions of reservoirs of the Tiete River were studied using the solid membrane copper and cadmium ion-selective electrodes. The complexation and the average conditional stability constants were determined under equilibrium conditions at pH=6.00 +/- 0.05 in a medium of 1.0 mol L-1 sodium nitrate, using the Scatchard method. The copper and cadmium electrodes presented Nernstian behavior from 1 X 10(-6) to 1 x 10(-1) mol L-1 of total metal concentration. Scatchard graphs suggest two classes of binding sites for both metals. A multivariate study was done to correlate the reservoirs and the variables: complexation properties, size, total organic carbon, volatile acid sulfide, E-H and pH.
Subject: ion-selective electrodes
complexation and adsorption capacities
Country: Brasil
Editor: Soc Brasileira Quimica
Rights: aberto
Identifier DOI: 10.1590/S0100-40422007000700002
Date Issue: 2007
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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