以溴氰菊酯为分析对象,将一种新型的样品前处理技术—基质固相分散法（MSPD）应用于麻黄中的溴氰菊酯残留测定,建立了麻黄中溴氰菊酯残留量的检测方法,优化了MSPD法的实验条件及气相色谱条件。样品经MSPD处理后,不需要进一步净化就可直接用气相色谱检测;麻黄的三个添加水平回收率为83.4%⁹8.3%,RSD为3.5%⁸.7%,该方法具有操作简便、净化效果好、适用性强的特点。

A newly developed sample pretreatment technique,matrix solid-phase dispersion(MSPD),deltamethrin as analyte and florisil as sorbent,was used to analyze deltamethrin residue in Herbal Ephedrae,and the method was set up.The optimum conditions of MSPD and GC-ECD were found.Under the MSPD conditions,no further cleanup was necessary for subsequent gas chromatographic determination.The recoveries of deltamethrin at three different determination levels were between 83.4% and 98.3%.The relative standard deviations were from 3.5% to 8.7%.The method is simple,expediently,and had high selectivity as well.