Implications of on-line FTIR detection in the separation of coal-derived products via HPLC with polar modifiers |
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Authors: | P. G. Amateis L. T. Taylor |
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Affiliation: | (1) Department of Chemistry, Virginia Polytechnic Institute and State University, 24061-0699 Blacksburg, VA, U.S.A. |
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Abstract: | Summary Fourier-transform infrared spectrometry (FTIR) was utilized as a detection system for high-performance liquid chromatography of polar compounds on a normal bonded-phase system. In addition to FTIR, UV (254 nm) and refractive index detection were employed in the separation of model compounds containing oxygen and nitrogen atoms in their molecules (phenols, alcohols, neutral and weakly basic nitrogen compounds). A polar amino-cyano (PAC) bonded-phase column was employed with a binary mobile phase (98:2 CDCl3:CH3CN). The separations and the information gained from each detector is discussed, including interactions between sample material and mobile phase. A polar fraction of a coal-derived product is also chromatographed under identical conditions. The results based on FTIR detection and chromatographic retention behavior suggest the exclusive presence of hindered and unhindered phenols. |
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Keywords: | Column liquid chromatography Fourier transform IR Polar compounds Coal products |
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