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杀灭菊酯含量测定常用气相色谱法和高效液相色谱法。上述方法虽有高灵敏度,但因所用仪器昂贵,难以在基层实验推广应用。本文用薄层层析法测定杀灭菊酯,现报告如下。1 材料与方法1.1 仪器层析板10×10cm~2,玻璃层析缸,玻璃喷雾器,微量注射器,恒温烘箱,长波紫外灯。1.2 试剂吸附剂:硅胶G(青岛海洋化工厂及西德进口)。展开剂:正已烷:丙酮=5:1;石油醚:乙酸乙酯=8:2;石油醚。显色剂:甲液:2:1磷酸;乙液:5%磷钼酸乙醇溶液。农药标准:将市售农药杀灭菊酯
Determination of fenvalerate content commonly used gas chromatography and high performance liquid chromatography. Although the above method has high sensitivity, but because of the expensive equipment, it is difficult to promote the use of grassroots experiments. In this paper, thin layer chromatography assay fenvalerate, are reported as follows. 1 Materials and methods 1.1 Instrument Chromatography plate 10 × 10cm ~ 2, glass chromatography cylinder, glass atomizer, micro-injector, thermostatic oven, UV light. 1.2 Reagents Adsorbent: Silicone G (Qingdao Ocean Chemical Plant and West Germany imported). Developing agent: n-hexane: acetone = 5: 1; petroleum ether: ethyl acetate = 8: 2; petroleum ether. Color reagent: A liquid: 2: 1 phosphoric acid; B liquid: 5% phosphomolybdic acid ethanol solution. Pesticide standards: the commercial pesticides to kill pyrethrins