Sporring Sune, Bøwadt Søren, Svensmark Bo, Björklund Erland
Department of Analytical Chemistry, Lund University, P.O. Box 124, SE-22100 Lund, Sweden.
J Chromatogr A. 2005 Oct 7;1090(1-2):1-9. doi: 10.1016/j.chroma.2005.07.008.
This paper compares the extraction effectiveness of six different commonly applied extraction techniques for the determination of PCBs in soil. The techniques included are Soxhlet, Soxtec, ultrasonication extraction, supercritical fluid extraction, microwave-assisted extraction and accelerated solvent extraction. For none of the techniques were the extraction conditions optimized, but instead the extraction parameters were based on the experience from previous successful investigation published by a number of research groups worldwide. In general, all extraction techniques were capable of producing accurate data for one native PCB contaminated soil diluted with another soil sample to obtain two concentration levels. It could therefore be concluded that any of the investigated techniques can be used with success if the extraction conditions applied are chosen wisely.
本文比较了六种不同的常用萃取技术对土壤中多氯联苯测定的萃取效果。所涉及的技术包括索氏提取法、索格利特提取法、超声萃取法、超临界流体萃取法、微波辅助萃取法和加速溶剂萃取法。这些技术均未对萃取条件进行优化，而是基于全球多个研究小组先前成功发表的研究经验来确定萃取参数。总体而言，对于一种用另一种土壤样品稀释以获得两个浓度水平的天然多氯联苯污染土壤，所有萃取技术都能够得出准确的数据。因此可以得出结论，如果明智地选择所应用的萃取条件，那么所研究的任何一种技术都可以成功使用。
