Hot off the press: new paper in Microchimica Acta!

We are happy to announce that our paper “Accurate iron quantification in colloids and nanocomposites by a simple UV-Vis protocolhas been recently published in the journal Microchimica Acta.

The study has been carried out by N&N Group members Miquel Torras and Anna Roig, as well as former members Carlos Moya and Gustavo Pasquevich.


The selection and comparative study is reported of calibration curves to quantify iron by a simple UV-Vis protocol based on the formation of iron (III) chloride complexes. The reliability of each calibration curve was evaluated using statistical and analytical parameters. The robustness of each calibration curve using superparamagnetic iron oxide nanoparticles (SPIONs) of different sizes and surface functionalization is demonstrated . We have also evaluated the effect of the particle coating and estimated the minimum time to ensure the full oxidation of iron (II) to (III) in sample solutions. Results from UV-Vis are comparable with those obtained from ICP-OES and from other spectroscopic techniques to quantify the iron. We advocate the proposed protocol as a simple and non-expensive route to determine accurately the iron content in colloidal and nanocomposite iron-based materials.

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Carlos Moya, Gustavo Pasquevich, Miquel Torras, new publication