Ultrasonic/Soxhlet/supercritical fluid extraction kinetics of pyrethrins from flowers and allethrin from paper strips |
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| Authors: | A Otterbach and B W Wenclawiak |
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| Institution: | (1) Department of Chemistry, Analytical Chemistry I, University of Siegen, Adolf-Reichwein-Stra?e 9, D-57068 Siegen, Germany, DE |
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| Abstract: | Three different extraction methods (ultrasonic extraction (USE), Soxhlet extraction (SOX) and supercritical fluid extraction
(SFE)) were compared for the extraction of pyrethrins from chrysanthemic flowers and commercial insecticide powder. Allethrin
was extracted from paper strips. All extracts and the kinetics were analyzed by supercritical fluid chromatography and flame
ionization detector.
Received: 18 January 1999 / Revised: 29 June 1999 / /Accepted: 30 June 1999 |
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