ABSTRACT
The hydroxyl group has been extensively studied in the near-infrared (NIR) region, particularly with respect to hydrogen bonding. The advantages of longer pathlength cells for liquids and direct analysis of solids have contributed to the utility of NIR for hydrogen-bonding studies in a great variety of mixtures and environments. Also, NIR offers a special advantage over the mid-IR in the measurement of mixtures of water and other hydroxyl-containing compounds because the combination peaks of water and other hydroxyls are well separated from one another in NIR.
