连续液液萃取法在水中半挥发性有机污染物前处理中的应用

Continuous liquid-liquid extraction method for semi-volatile organic pollutants(SVOCs) in water Applied research in pretreatment

研究了连续液液萃取方法在水中半挥发性有机污染物(SVOCs)前处理中的应用,该法操作流程简单、溶剂使用量小、无需人工值守,样品各组分基体加标回收率在45.47%~98.48%,回收率均能达到分析方法要求,平行样测定RSD在0.13%~9.01%,精密度良好。

The traditional pretreatment method has the disadvantages of cumbersome operation procedures,large solvent usage,and the need for manual duty.It is not economical enough.It is also not environmentally friendly.The purpose of this article is to study the application of continuous liquid-liquid extraction method in the pretreatment of SVOCs.The method has a simple operation process,small solvent usage,and no manual duty.The recovery rate of the matrix of each component of the sample is 45.47% ~ 98.48 Between %,the recovery rate can meet the requirements of the analysis method.The RSD of the parallel sample is between 0.13% and 9.01%,and the precision is good.