Community Research and Development Information Service - CORDIS

Abstract

The testing of various techniques for the trapping of chlorobenzenes and chlorobiphenyls after supercritical extraction has led to the establishment of three promising designs. An efficient liquid collection system includes the decompression of the supercritical fluid into a glass-wool filled tube immersed in the collection solvent. Only the most volatile chlorobenzenes cannot be collected quantitatively with this design because of the purging effect of the large amount of decompressed supercritical fluid bubbling through the collection solvent. Solid phase trapping was efficient even for volatile chlorobenzenes and could be performed on commercial solid phase extraction (SPE) tubes with a simple modification of commercial SFC equipment. A new design for off-line SFE with solid phase trapping and on-line HPLC elution proved to be very efficient and easy to operate. Future research will focus on the application of these techniques for the extraction of real samples.

Additional information

Authors: BOWADT S, JRC Ispra (IT);PELUSIO F, JRC Ispra (IT);MONTANARELLA L, JRC Ispra (IT);LARSEN B, JRC Ispra (IT);KAPILA S, University of Missouri, Environmental Trace Substances Research Center, Columbia (US)
Bibliographic Reference: Article: Journal of Trace and Microprobe Techniques, Vol. 11 (1993) Nos. 1-3, pp. 117-131
Record Number: 199410003 / Last updated on: 1994-11-28
Category: PUBLICATION
Original language: en
Available languages: en
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