Attenuated Total Reflectance Effects with Different Prisms

Abstract

The attenuated total reflectance technique produces infrared spectra that are comparable to those obtained by the transmission technique if consideration is given to the choice of a prism material. The material should be selected on the basis of the refractive index of the sample. The ratio between the refractive index of the sample and that of the prism will define a range of incident angles within which spectra can be obtained Outside of this range, spectra will either be weak or show the distorting effects of refraction