Vibrational spectroscopy is the collective term used for both IR (infra-red) and Raman spectroscopy since both techniques measure the vibrational energies of molecules. Although both techniques are non-destructive and non-invasive methods that can provide information about the molecular composition, structure and interactions within a sample, the two can be distinguished based on selection rules. IR take advantage on the change in the dipole moment of the molecular in comparison to Raman which rely on changes in polarizability. In this study, Raman spectroscopy was used to quantitatively determine the composition of xylene mixtures. Different xylene mixtures containing the three xylene isomers (m-xylene, o-xylene and p-xylene) were analyzed. The amount of each xylene isomer in mixture was determined by looking at the ratio of areas and intensities of distinct peak found in each isomer over common peak found in all isomers.

Quantifiying xylene mixtures by Raman spectroscopy

256th National Meeting (2018)

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