土壤和沉积物中多环芳烃和多氯联苯同时检测方法的研究进展

Research Advances on Methods for Simultaneous Determination of Polycyclic Aromatic Hydrocarbons and Polychlorinated Biphenyls in Soil and Sediment

摘要: 对文献中报道的土壤和沉积物中多环芳烃、多氯联苯同时提取技术、同时净化技术和同时测定技术分别进行了总结，详尽评述了前处理过程和仪器分析过程中各步骤的技术特点。与土壤和沉积物中目标物各自单独分析比较，采用连续分析方法可较易实现同时检测多种不同类别的有机污染物，目标物能同时萃取且上机分析前不用分离，能节省时间和材料，回收率高，干扰少，选择性好，该方案能适用于短时间内对大量样品进行可靠分析，且所需样品量少，并结合实际提出了今后的发展前景。

Abstract: The methods reported in the literature were summarized for the simultaneous extraction, synchronous cleanup and continuous analysis of polycyclic aromatic hydrocarbons and polychlorinated biphenyls in soil and sediment samples. The technical characteristics of each step during sample pretreatment process and instrumental analysis process were reviewed in detail. Compared with the use of different group-specific analytical methods for different target compounds in soil and sediment, the continuous analytical method was a viable approach for the simultaneous determination of different classes of persistent organic pollutants employing less analytical efforts. The simultaneous extraction and no separation of the analytes were performed before the GC analysis in order to save time and materials. The method recoveries yielded good results. No serious interferences were encountered and good selectivity was achieved. The protocol should be applicable for reliable analysis of a high number of samples in a short period while requiring a small amount of sample. Combined with the actual situation, some prospects for the future developments of simultaneous determination techniques for these pollutants were put forward.