The analysis of chlorinated dibenzofurans in municipal fly ash: Supercritical fluid extractionvs Soxhlet

✍ Scribed by Onuska, Francis I. ;Terry, Ken A. ;Wilkinson, R. J.

• Publisher: John Wiley and Sons
• Year: 1993
• Tongue: English
• Weight: 612 KB
• Volume: 16
• Category: Article
• ISSN: 0935-6304
• DOI: 10.1002/jhrc.1240160705

✦ Synopsis

Abstract

A multiresidue supercritical fluid extraction procedure for chlorinated dibenzofurans (PCDFs) has been optimized as an efficient method for the determination of these compounds in fly ash samples. The results were compared with those obtained by Soxhlet extraction. Extracts from the two procedures were analyzed by gas chromatography–mass spectrometry (HRGC–MS) Statistical analysis of the results confirmed that supercritical fluid extraction provides data with a relative standard deviation of less than 10% while Soxhlet extraction data show a much greater spread.