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	Infrared Spectroscopy - Practical Details (Nicolet IR 100) (Click here to review the theory of infrared spectroscopy) Start the Practical Techniques IR Tutorial (Nicolet IR100 Using EZOmnic) Contents: Sample Preparation (general discussion) thin film (liquids) KBr disk (solids) cast film (solids) Nujol mull (solids) solution (liquids or solids) Operation of the Nicolet IR100 FT-IR Spectrometer Using EzOmnic (intro) EzOmnic basics recording a background recording a spectrum processing a spectrum correcting the baseline changing the display range picking peaks printing the spectrum clean up Troubleshooting My spectrum is too weak (poor signal-to-noise ratio) My spectrum is too strong (peaks are off scale or have "flat tops") My spectrum has "spikes" between 4000 - 3500 and/or 2000 - 1500 cm^-1 (water vapour) My spectrum has a (possibly inverted) double peak between 2380 - 2290 cm^-1 (carbon dioxide) My spectrum has a slanted baseline The baseline of my spectrum does not fall near 100%T The salt plates look damaged. Can I still use them? I cannot click on the Col Smp icon to start collecting my background and/or spectrum. (Thanks to IIP students Enrico Fok and June Ng for their help with some of the images used in this tutorial)


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