亚临界水-固相萃取有机磷残留前处理技术

摘要

The combination of subcritical water extraction (SCWE) and solid phase extraction for determining organophosphorus pesticides in vegetables was studied. In the experiments , organophosphorous residues were determinated by gas chromatography (GC). The optimum conditions were the extraction temperature of 90℃, the extraction time of 5 min, the volume of 10 mL, pH=8.0, the average recoveries of organophosphorus pesticides were in the range of 70%-96%.%　　建立了一种使用亚临界水萃取-固相萃取技术对蔬菜中有机磷农药进行萃取、检测的方法。实验中使用气相色谱对有机磷农药进行检测。研究表明，在萃取温度90℃，萃取时间5 min，萃取溶剂pH=8.0，萃取液体积为10 mL的条件下，对有机磷农药进行了萃取，其回收率在70%~96%。