气相色谱-质谱法对大米中丙硫克百威的检测方法优化

Optimization of Gas Chromatography-Mass Spectrometry for the Determination of Benfuracarb in Rice

本研究依据《出口食品中甲草胺、乙草胺、甲基吡恶磷等160种农药残留量的检测方法气相色谱-质谱法》(SN/T 2915—2011),对大米中丙硫克百威的测定方法进行了优化,对样品前处理的关键步骤进行了完善。经过优化后,样品前处理过程更为简便,同时降低了中间转移过程中的损耗,使得大米中丙硫克百威的检测更准确、更高效,相对标准偏差比原方法低,加标回收率在80.0%~98.5%。

In this study,based on SN/T 2915—2011,the determination method of propoxur in rice was optimized,and the key steps of sample pretreatment were improved.After optimization,the sample pretreatment process became more simple,and the loss in intermediate transfer process was reduced,the detection of propoxur in rice was more accurate and efficient,the relative standard deviation was lower than the original method,and the recovery rate of spiked samples was 80.0%to 98.5%.