示波滴定法测定脒甲异脲与氨基均三嗪  

Determination of Guanyl-o-Methylisourea and 2-Amino -4-Methoxy-6-Methyl-s-Triazine by Oscillo-graphic Titration

作　　者：翁筠蓉[1] 王勇进[1] 吴清盛 高鸿[1] 

机构地区：[1]南京大学化学系

出　　处：《分析试验室》1994年第4期47-48,共2页Chinese Journal of Analysis Laboratory

摘　　要：脒甲异脲盐酸盐为第四胺化合物，氨基均三嗪可经浓硫醚消解处理成铵盐，它们均可与四苯硼钠定量反应。在ｐＨ＝５的条件下以过量四苯硼钠沉淀试样，干过滤后，吸取部分滤液用Ｔｌ＿２ＳＯ＿４为反滴定剂，以ＮａＡｃ－ＮａＯＨ为底液，汞膜电极为指示电极，钨电极为参比电极进行示波滴定。由示波图上ＴＰＢ￣－切口的消失指示滴定终点。此法简便、灵敏、准确，测定结果今人满意。Guanyl-o-methylisourea and 2-amino-4-methoxy-6-methyl-s-triazine are organic compounds containingnitrogen,which can be determined by oscillographictitration method.In this paper NaTPB is used as theprecipitant and Tl_2SO_4 as the back titrant.Satisfactoryresults can be obtained by taking the disappearence ofincision of TPB￣- as the end-point of titration.

关 键 词：示波滴定 脒甲异脲 氨基均三嗪 

分 类 号：TQ457[化学工程—农药化工]