06-16-2022, 06:26 AM
Yes there are libraries which can yield lookup information but these libraries are limited in scope and depth compared to the millions of industrial chemicals used, and also will not account for mixtures of chemicals which can yield erroneous search information. Although typically a qualitative tool for material identification, FTIR analysis can also be used as a quantitative tool to quantify specific functional groups, when the chemistry is understood and standard reference materials are available. The intensity of the absorbance will correlate to the quantity of functionality present in the sample. For instance, we utilize FTIR for quantitative analysis for characterizing the amount of water in an oil sample and the degree of oxidation and nitration of an oil. We have even developed a method for characterizing how paraffinic or naphthenic an oil sample is. It must be noted however that FTIR is a “bulk” analytical technique, in that little information can be gained from trace or small concentrations of material in a sample (typically greater than 5% constituent).
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