FT-IR Spectrophotometer
Infrared spectroscopy exploits the fact that molecules absorb specific frequencies that are characteristic of their structure. These absorptions are resonant frequencies, i.e. the frequency of the absorbed radiation matches the transition energy of the bond or group that vibrates. The energies are determined by the shape of the molecular potential energy surfaces, the masses of the atoms, and the associated vibronic coupling. The infrared spectrum originates from the vibrational motion of the molecule. The vibrational frequencies are a kind of fingerprint of compounds. This property is used for characterization of organic, inorganic and biological compounds. The band intensities are proportional to the concentration of the compound and hence qualitative estimations are possible.
JASCO Spectrofluorometer Model FP8300
Specification of the instrument:
| Make | JASCO FTIR SPECTROMETER |
| Model | FT/ IR-4600 |
| Wavenumber range | 7800-350 cm-1 |
| Wavenumber Accuracy | Within ± 0.01 cm-1 |
| Resolution | 0.7 cm-1 |
| Additional Futures | Kbr Windows, Single Reflection ATR |
Heavy metal compounds sometimes absorb energy at lower wave-number (low energy) region only, which may not be covered by the instrument that we have.