枸橼酸胡椒嗪为驱蛔虫的特效药,其盐类有三种即: 1P—1C,1P—2C,3P—2C,其水溶液呈酸性,因此有些作者采用0.1N NaoH滴定枸橼酸的羧酸基,也有用苦味酸作成苦味酸胡椒嗪的重量法,和磷钼酸,钼酸铵,钒酸铵等的重量法,有的作者采用了容量法,但需先作成沉淀分离后,将沉淀溶解再作容量分析,操作 Piperonium citrate is a specific drug for driving aphids. There are three types of salts: 1P—1C, 1P—2C, and 3P—2C. Their aqueous solution is acidic. Therefore, some authors use 0.1N NaOH to titrate carboxylic acid with citric acid. Based on the gravimetric method of picric acid and piperonic acid, and the gravimetric method of phosphomolybdic acid, ammonium molybdate, ammonium vanadate, etc., some authors have adopted the volumetric method, but they need to be precipitated and precipitated. Dissolve again for capacity analysis, operation