The Museum of Natural History has a state-of-the-art laboratory at its disposal.
Raman and IR Microspectroscopy
Via Gino Capponi 3r, Florence – ph. 055 275 6786 | 055 275 7537
Via La Pira 4, Florence – ph. + 39 055 2757554
Vanni Moggi Cecchi
The lab is equipped with a LabRam IR – Horiba Jobin Yvon spectrometer.
Description of the techniques
Raman spectroscopy employs a quantum phenomenon (the Raman effect), whereby various materials diffuse a light radiation emitted by a laser source at different frequencies than that of the monochromatic incident bundle.
This spectroscopy is therefore a non-destructive technique, since the material being analysed is subjected to the action of a light source with no additional treatment (neither chemical nor physical) during the preparation of the sample. The presence of a motorized table allows Raman maps to be obtained.
The Fourier Transform Infrared (FTIR) spectroscopy is a particularly useful technique to investigate existing chemical bonds within the materials. When an infrared photon hits a molecule it can induce a change from a fundamental state to an excited vibrational state. Since the changes between vibrational states are typical of certain bonds and certain substances, this technique can recognize many substances.
The instrument works both in ATR (Attenuated Total Reflection) mode and in mirrored or diffused reflection mode.
General application fields of the techiques
Both techniques, being prominently complementary, allow the analysis of a wide array of substances, organic, inorganic, solid and liquid.
- Geological and planetological samples
- Artistic heritage
- Biological specimens
- Biomedical material
This laboratory offers its services to third party users, such as other research institutes, private firms etc.