Carbon Dioxide Supercritical Fluid Extraction with on-line Fluorescence Detection
- 1 November 1995
- journal article
- separations
- Published by Taylor & Francis in Analytical Letters
- Vol. 28 (14) , 2561-2574
- https://doi.org/10.1080/00032719508004035
Abstract
An HPLC detector was modified to operate as a low pressure on-line supercritical fluid extraction detector. Spectra of CO2 and fluorene are presented of pressures ranging from 85 to 150 atm. Both the intensity and emission wavelength of fluorene were effected by CO2 pressure. As pressure increased, the emission intensity also increased and the emission shifted to a shorter wavelength. The intensity of CO2 emission decreased by increasing pressure. The emission wavelength of CO2 was unaffected by pressure. A detection limit for fluorene was found to be 5 μg per extraction. The minimal detectable mass was 25 μg (± 8% RSD) per extraction.Keywords
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