By a rigorous approach, consolidated for years, protonation and metal-ions complexation biphasic equilibria between aqueous solutions and the active sites of chelating resins or natural and synthetic polymers are characterized. The absorbent material is characterized with physico-chemical measurements and absorption reactions are determined. The model adopted for the determination of the exchange constants is allows to predict the absorbing behavior in any condition. Furthermore, in a real sample, it allows to determine the speciation of the metal itself, understood as the fraction of metal that is in the free or bound to a complexing agent. This information is crucial, both in the environmental and physiological fields, as it is linked to the bioavailability of a given metal ion.
Coordinator: Raffaela Biesuz
Team: Giancarla Alberti, Lisa Rita Magnaghi, Camilla Zanoni.
Collaborations:
Valeria Nurchi, University of Cagliari
Prof. Maria Amelia Santos, Universidade de Lisboa, Portugal
Prof. Michel Mayer Université de Bourgogne, France
Publications:
G. Alberti, C. Zanoni, L. R. Magnaghi, M. A. Santos, V. M. Nurchi, R. Biesuz:
FO @ EVOH and 3,4 HP @ EVOH: Towards New Polymeric Sorbents for Iron(III).
Chemosensors (2020) 8, 111. DOI 10.3390/chemosensors8040111
R. Biesuz, V. M. Nurchi, J. I. Lachowicz and G. Alberti:
Unusual PLS application for Pd(II) sensing in extremely acidic solutions.
New J. Chem. (2018) 42, 7901-7907. DOI 10.1039/c7nj05085b
G. Alberti, M. Mussi, F. Quattrini, M. Pesavento, R. Biesuz:
Metal complexation capacity of Antarctic lacustrine sediments.
Chemosphere (2018) 402-408. DOI 10.1016/j.chemosphere.2017.12.188