Increasing extraction efficiency in supercritical fluid extraction from complex matrices Predicting extraction efficiency of diuron and linuron in supercritical fluid extraction using supercritical fluid chromatographic retention

Supercritical fluid extraction (SFE) conditions have been investigated in terms of mobile phase modifier, pressure, temperature and flow-rate to improve extraction efficiency. Extraction efficiencies of up to 100% in less than 2 h have been obtained. These extraction efficiencies resulted from our e...

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Bibliographic Details
Published in:Journal of Chromatography A 1988, Vol.447 (1), p.53-63
Main Authors: McNally, Mary Ellen P., Wheeler, Julia R.
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Chromatographic methods and physical methods associated with chromatography
diuron
Exact sciences and technology
extraction
linuron
liquid chromatography
liquids
Other chromatographic methods
prediction
soil
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Summary:Supercritical fluid extraction (SFE) conditions have been investigated in terms of mobile phase modifier, pressure, temperature and flow-rate to improve extraction efficiency. Extraction efficiencies of up to 100% in less than 2 h have been obtained. These extraction efficiencies resulted from our extensive parameter optimization experiments. Packed column supercritical fluid chromatography (SFC) has been used to examine the effect of these parameters on retention behavior. A relationship between chromatographic retention and extraction efficiency was sought. By determining trends of the chromatographic capacity factors using SFC conditions corresponding to SFE parameters, a prediction of extraction efficiency can be made. These predictions have shortened method development time in SFE.
ISSN:0021-9673
DOI:10.1016/0021-9673(88)90006-4