Comparison of pressurised liquid extraction with Soxhlet extraction for the analysis of polychlorinated dibenzo-p-dioxins and dibenzofurans from fly ash and environmental matrices

被引：31

作者：

Bautz, H ^{[1
]}

Polzer, J ^{[1
]}

Stieglitz, L ^{[1
]}

机构：

[1] Forschungszentrum Karlsruhe, Inst Chem Tech, D-76021 Karlsruhe, Germany

来源：

JOURNAL OF CHROMATOGRAPHY A | 1998年 / 815卷 / 02期

关键词：

extraction methods; pressurized liquid extraction; dynamic high-pressure solvent extraction; soil; environmental analysis; polychlorinated dibenzodioxins; polychlorinated dibenzofurans;

D O I：

10.1016/S0021-9673(98)00453-1

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Dynamic high-pressure solvent extraction is a new, rapid and solvent-saving extraction technique for performing pressurised liquid extractions. The technique uses conventional solvent or mixtures of solvents for the extraction of solid material under elevated temperature and pressure. A continuous flow of fresh solvent during the extraction provides for a high extraction efficiency, short extraction times and low solvent consumption. The extraction device and the optimisation of the extraction procedure shall be described. For demonstrating the applicability of this technique, polychlorinated dibenzodioxins and -furans were extracted from different matrices which include fly ash, filter dust, and soil. Soxhlet extractions were performed as a reference method. The comparative results show that dynamic high-pressure solvent extraction provides extraction efficiencies equal to, or even higher, than Soxhlet. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：231 / 241

页数：11

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