Carbon dioxide supercritical fluid chromatography-Fourier transform infrared spectrometry |
| |
Authors: | Ph Morin M Caude H Richard R Rosset |
| |
Institution: | (1) Laboratoire de Chimie de l'Ecole Nationale Supérieure des Industries Agricoles et Alimentaires,1, avenue des Olympiades, 91305 Massy, France;(2) Laboratoire de Chimie Analytique de l'Ecole Supérieure de Physique et de Chimie de Paris, 10, rue Vauquelin, 75231 Paris Cedex 05, France |
| |
Abstract: | Summary The coupling of carbon dioxide supercritical fluid chromatography with Fourier transform infrared spectrometry (SFC-FTIR)
is a powerful tool for the separation and on-line identification of non-volatile compounds. The IR transparency of carbon
dioxide in the Fermi resonance bands region versus its density has been studied. Functional groups with stretching vibrations
outside the transparent window of carbon dioxide are examined. SFC-FTIR separations allow Gram-Schmidt reconstruction chromatograms
or IR window chemigrams with high quality spectra to be obtained. This SFC-FTIR lightpipe (flow cell, beam condensing optics,
narrow band detector) has allowed detection limits of 250ng for benzonitrile and 70ng for methyl benzoate to be reached. The
feasibility of very rapid SFC-FTIR separations is shown along with the subsequent peak spectra. |
| |
Keywords: | Supercritical fluid chromatography (SFC) Fourier transform infrared spectrometry (FTIR) Packed columns Fermi resonance bands |
本文献已被 SpringerLink 等数据库收录! |