COMPARISON OF EXTRACTION METHODS FOR POLYCHLORINATED DIBENZO-P-DIOXINS AND DIBENZOFURANS IN FLY-ASH USING GAS-CHROMATOGRAPHY MASS-SPECTROMETRY

被引：9

作者：

BEARD, A ^{[1
]}

NAIKWADI, K ^{[1
]}

KARASEK, FW ^{[1
]}

机构：

[1] UNIV WATERLOO,DEPT CHEM,WATERLOO N2L 3G1,ONTARIO,CANADA

来源：

JOURNAL OF CHROMATOGRAPHY | 1992年 / 589卷 / 1-2期

关键词：

D O I：

10.1016/0021-9673(92)80031-O

中图分类号：

O65 [分析化学];

学科分类号：

070302 [分析化学]; 081704 [应用化学];

摘要：

Four method for the extraction of polychlorinated dibenzo-p-dioxins and dibenzofurans in municipal solid waste (MSW) incinerator fly ash samples were examined. A Soxhlet method was found to be the most efficient. However, the time required for extraction was more than 24 h. Ultrasonic extraction (UE) proved to be an inexpensive, efficient, reliable and rapid method. Studies of the effect of extraction time and temperature in UE showed that higher temperatures, longer times of extraction and increased number of repeated extractions with fresh solvent resulted in higher extraction efficiency.

引用

页码：265 / 270

页数：6

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