Search results for "polysaccharides as chelating agents"

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Complex formation of copper(II) and cadmium(II) with pectin and polygalacturonic acid in aqueous solution. An ISE-H + and ISE-Me 2+ electrochemical s…

2012

The acid-base properties of pectin and its ability to complex with copper(II) or cadmium(II) were quantitatively determined in order to define the ability of this natural polyelectrolyte to sequester metal ions. Potentiometric measurements carried out at different ionic strengths (0.1 - 0.7 mol L-1, in Na+ ionic medium) allowed us to define the acid-base properties of pectin together with the dependence of the protonation constants on ionic strength and to calculate the protonation constant at infinite dilution. The formation of complex species between pectin and copper(II) or cadmium(II) was investigated potentiometrically (using H+, Cu2+ and Cd2+ Ion Selective Electrodes, ISEs) in NaNO3 a…

polysaccharides as chelating agents; metal sequestering ability; complex formation; speciation studiescomplex formationpolysaccharides as chelating agentsSettore CHIM/01 - Chimica Analiticametal sequestering abilitypolysaccharides as chelating agentspeciation studies

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PEPhysical Sciences and Engineering
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LSLife Sciences
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