Extraction of polycyclic aromatic hydrocarbons and organochlorine pesticides from soils: A comparison between Soxhlet extraction, microwave-assisted extraction and accelerated solvent extraction techn

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• 作者：Wentao Wang ; Bingjun Meng ; Xiaoxia Lu ; Yu Liu ; Shu Tao
• 关键词：Soxhlet extraction ; Microwave-assisted extraction ; Accelerated solvent extraction ; Polycyclic aromatic hydrocarbons ; Organochlorine pesticides ; Soil
• 刊名：Analytica Chimica Acta
• 出版年：2007
• 期刊代码：2_00032670
• 类别：ch
• 出版时间：29 October 2007
• 卷：602
• 期：2
• 页码：211-222
• 文件大小：492 K

摘要

The methods of simultaneous extraction of polycyclic aromatic hydrocarbons (PAHs) and organochlorine pesticides (OCPs) from soils using Soxhlet extraction, microwave-assisted extraction (MAE) and accelerated solvent extraction (ASE) were established, and the extraction efficiencies using the three methods were systemically compared from procedural blank, limits of detection and quantification, method recovery and reproducibility, method chromatogram and other factors. In addition, soils with different total organic carbon contents were used to test the extraction efficiencies of the three methods. The results showed that the values obtained in this study were comparable with the values reported by other studies. In some respects such as method recovery and reproducibility, there were no significant differences among the three methods for the extraction of PAHs and OCPs. In some respects such as procedural blank and limits of detection and quantification, there were significant differences among the three methods. Overall, ASE had the best extraction efficiency compared to MAE and Soxhlet extraction, and the extraction efficiencies of MAE and Soxhlet extraction were comparable to each other depending on the property such as TOC content of the studied soil. Considering other factors such as solvent consumption and extraction time, ASE and MAE are preferable to Soxhlet extraction.