Diffuse Reflectance – Theory and Applications
Diffuse reflectance is an excellent sampling tool for powdered or crystalline materials in the mid-IR and NIR spectral ranges. It can also be used for analysis of intractable solid samples. As with transmission analysis, samples to be run by diffuse reflectance are generally ground and mixed with an IR transparent salt such as potassium bromide (KBr) prior to sampling. Diffuse reflectance is an excellent sampling technique as it eliminates the time-consuming process of pressing pellets for transmission measurements. Diffuse reflectance can also be used to study the effects of temperature and catalysis by configuring the accessory with a heating or cooling environmental chamber.
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