A Quantitative Method for Infrared Spectroscopy of Surface Species

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Abstract
A quantitative method for studying surface species by infrared spectroscopy has been described. The solid particles are not subjected to high pressures or contacted with any extraneous substance during sample preparation. The method is quantified by using the solid substrate as an internal standard. Reproducibility measurements on surface concentration of trimethylchlorosilane adsorbed on silica gel and Aerosil gave 3.29 and 3.49% standard errors, respectively. Quantitative measurement of surface hydroxyl groups in open systems is also described.