Attenuated Total Reflectance
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FTIR Spectroscopy: Attenuated Total Reflectance (ATR)
resources.perkinelmer.comAn attenuated total reflection accessory operates by measuring the changes that occur in a totally internally reflected infrared beam when the beam comes into contact with a sample (indicated in Figure 4). An infrared beam is directed onto an optically dense crystal with a high refractive index at a certain angle. This internal reflectance
Principles of FTIR Spectroscopy - Michigan State University
www2.chemistry.msu.eduPrinciples of Diffuse Reflectance Method K is the absorption coefficient, and S is the scattering coefficient. In practice, the comparative reflectance ... Attenuated Total Reflectance Enables samples to be examined directly in the solid or liquid state without further preparation. Penetration depth = 0.5-2 ...
Experiment 11 — Infrared Spectroscopy - Amherst
www.amherst.eduown IR spectra on the new, ultra-high-tech ATR FT-IR (Attenuated Total Reflectance Fourier Transform IR) This instrument is especially good for obtaining spectra of solids, such as the ones you saved from last semester — fluorenone, benzoic acid, benzocaine, and acetanilide.