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Fourier Transform Infrared (FTIR) Spectroscopy
- The Nicolet Magna 760 FTIR spectrometer is connected to a Nic-Plan IR microscope for either transmission or reflections microscopy.
IR absorption by carbon dioxide and water vapour in ambient air can be minimised by purging the optics with dry air.
The department has two Nicolet Avatar 320 instruments; a routine analysis FTIR spectrometer that offers solutions from data collection to reporting the results. The Avatar is configured with EZ OMNIC software, a simplified spectroscopy interface with spectral interpretation tools. Applications of FTIR spectroscopy include helping to identify unknown materials, determine the quality of a sample and quantify components in a mixture. The instrument has a spectral range of 7,400 - 375 cm-1 using KBr beamsplitter and 0.9 cm-1 standard optical resolution.
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UV-Visible Spectroscopy
Raman Spectroscopy
The Dilor XY Modular Laser Raman spectrometer is equipped with a charge coupled detector. The 514.5 nm line of a Coherent Innova 5W Ar+ Laser (Model 70, continuous wave) with a power of 150 mW is used for sample excitation. An Olympus BH-2 microscope is used to focus the laser onto the sample and collect backscattered radiation. Variable laser power and accumulation times are possible to improve signal-to-noise ratios and avoid sample degradation.
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