论文部分内容阅读
溴氰菊酯是拟除虫菊酯杀虫剂的一种,具有杀虫活性高、杀虫谱广的优点,对苍蝇、蚊子、蟑螂、臭虫等都有极高的杀灭效果,是一种高效低毒新型卫生药剂。溴氰菊酯纯品是斜方形针状晶体,熔点为101～102℃,分子式为c_(22) H_(19) Br_2 NO_3 ,分子量为505.2。对溴氰菊酯可湿性粉剂有效成分溴氰菊酯含量的测定,文献报道有气相色谱法、高效液相色谱法等,这些方法要求条件高,操作比较复杂。作者用薄层色谱——紫外分光光度法测定,方法简便,结果满意。
Deltamethrin is a kind of pyrethroid insecticide which has the advantages of high insecticidal activity and broad insecticidal spectrum and extremely high killing effect on flies, mosquitoes, cockroaches, bed bugs and the like Low toxicity of new health agents. The pure deltamethrin product is rhombic needle-shaped crystals, melting point of 101 ~ 102 ℃, the formula c_ (22) H_ (19) Br_2 NO_3, a molecular weight of 505.2. Deltamethrin wettable powder active ingredient deltamethrin content determination, reported in the literature gas chromatography, high performance liquid chromatography, these methods require high conditions, the operation is more complicated. The author using thin layer chromatography - UV spectrophotometry, the method is simple and the results are satisfactory.