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MEDESP - Chimica analitica dei metalli: determinazione, frazionamento e speciazione

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Attività

Activities:

˗            Development and optimization of highly sensitive analytical procedures, based on spectroscopic, electrochemical and mass-spectroscopy techniques, aimed to characterize and quantify inorganic species at trace levels in real samples;

˗            Chemical speciation, in real and synthetic samples, by the application of analytical techniques suitable to preserve the chemical equilibria and by data elaboration with software aimed to deal with chemical models and to calculate formation constants.

 

Application fields:

˗            quantification and/or speciation of inorganic species in natural samples: soils, sediments, natural water, vegetables, atmospheric particulate, biological fluids, food supplements, drugs, food;

˗            Investigation on biogeochemical cycles of elements and on environmental contamination by inorganic species;

˗            characterization of acid/base properties of macromolecules or of newly synthesised molecules.

˗            determination of the metal complexes stability in aqueous solution;

˗            Investigation of redox equilibria of biologically active substances with proved antioxidant capacity.

 

Available techniques:

˗            Inductively Coupled Plasma – Atomic Emission Spectroscopy (ICP-AES);

˗            Graphite Furnace - Atomic Absorption Spectroscopy (GF-AAS);

˗            Inductively Coupled Plasma – Mass Spectrometry (ICP-MS);

˗            Anodic, Cathodic and Adsorptive cathodic Stripping Voltammetry (ASV, CSV, AdSV) with Hanging Mercury Drop Electrodes(HMDE);

˗            Anodic Stripping Voltammetry with nanostructured electrodes;

˗            Potentiometry;

˗            UV-vis spectrophotometry

˗            Fluorescence spectrophotometry

˗            Chemometric techniques.

 

Main research topics:

Investigation on biogeochemical cycles of elements and on inorganic species contamination in Antarctica by taking part, from 1987 until now, in the National Research Program for Antartica of ENEA. upload_g_medesp_1A1.png

 

 

 

 Evaluation of metals concentration in ayurvedic medicine products and in Taraxacum officinale cultivated in Piedmont (Italy). The projects are developed in collaboration with Servizio Igiene Alimenti e Nutrizione (SIAN), ASL CN1 and CN2, and with Regione Piemonte.  upload_g_medesp_4A1.png

 

 

 

 

Characterization of inorganic components of the atmospheric particulate collected in anthropized (Piedmont, Italy) and remote (Arctic) areas .

 Development of new electrochemical sensors for the determination of mercury, arsenic and organic molecules at trace levels by voltammetric methods.          upload_g_medesp_spec_11.png

 Metrology and validation of analytical procedures.

 Modelling of the protogenic and complexation capabilities of NOM (Natural Organic Matter).

 

upload_g_medesp_spec_21.pngStudies on the metal complexes formation in aqueous solution.

 Characterization of the acid/base properties and of the antioxidant capacity of wines.

 

Ultimo aggiornamento: 17/11/2015 09:31
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