Ling Y C, Huang I P
Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan.
J Chromatogr A. 1995 Mar 24;695(1):75-82. doi: 10.1016/0021-9673(94)01157-a.
An effective multi-residue matrix solid-phase dispersion (MSPD) extraction and gas chromatographic-electron-capture detection method for the determination of six synthetic pyrethroids (fenpropathrin, cyhalothrin, permethrin, cypermethrin, fenvalerate and deltamethrin) in 5 g of vegetables (West Indian gherkin, eggplant, pak-choi, cabbage and garden peas) is described. The method uses a Florisil-based MSPD column for direct in-line clean-up with n-hexane-acetone (9:1). Recoveries calculated at 0.1 and 0.5 micrograms/g fortification levels were between 92 and 113%. The method detection limits were between 5.1 and 91.5 ng/g. The method compared favourably with the traditional method in terms of the sample size, analysis time and overall cost. The method may serve as a screening protocol for the determination of pyrethroids in vegetables.
本文描述了一种有效的多残留基质固相分散（MSPD）萃取及气相色谱 - 电子捕获检测方法，用于测定5克蔬菜（佛手瓜、茄子、小白菜、卷心菜和豌豆）中的六种拟除虫菊酯（甲氰菊酯、氯氟氰菊酯、氯菊酯、氯氰菊酯、氰戊菊酯和溴氰菊酯）。该方法使用基于弗罗里硅土的MSPD柱，以正己烷 - 丙酮（9:1）进行直接在线净化。在0.1和0.5微克/克的加标水平下计算的回收率在92%至113%之间。方法检测限在5.1至91.5纳克/克之间。该方法在样品量、分析时间和总成本方面与传统方法相比具有优势。该方法可作为蔬菜中拟除虫菊酯测定的筛选方案。
