Near-infrared spectroscopy quantitative evaluation

This chapter has provided an introduction to a number of industrial (and related) fields which utilize infrared spectroscopy as an analytical technique. This method is widely used in the pharmaceutical industry for the qualitative and quantitative analysis of active and non-active ingredients. The food industry uses information from the mid- and near-infrared regions to carry out qualitative and quantitative analysis. Agricultural applications, such as the evaluation of grain, and the pulp and paper industries, were introduced and near-infrared spectroscopy was demonstrated as an important approach in these fields. Paints are variable mixtures and infrared spectroscopy provides an effective technique for the identification of the components of paints. Examples of environmental applications of infrared spectroscopy, including gases and pollutants, were also discussed. 

Sucrose quantitation has also been performed by colorimetric methods. However, in recent years, automated enzymatic analyzers and instmmental methods (eg, ion chromatography and hplc) have become increasingly popular, as they provide greater sensitivity and accuracy. Near infrared (nir) spectroscopy is currendy under evaluation as a tool for sucrose quantitation in sugar mills and food processing operations. 

Near-infrared and FTIR Raman spectroscopy were compared and evaluated for the quantitative analysis of naphtha using partial least-squares regression. 19 refs. SOUTH KOREA... 

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