Abstract
Abstract The heating of samples during infrared (IR) transmission/absorption spectroscopic measurements has been known and of some concern for many years. Emission of radiation by the sample can cause spectral artifacts, and sample heating is of particular importance for surface studies at or near ambient temperatures because surfaces may become altered by the desorption of gases. Such effects, discussed elsewhere,1,2 must be considered for photoacoustic spectroscopy (PAS).
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