电位滴定法测定标准物质DIANP的纯度  

Determination of Standard Substance DIANP Purity by Electrode Potential Titration

作　　者：梁忆[1] 汪伟[1] 王景荣[1] 任春燕[1] 罗红艳[1] 李乃勤[1] 

机构地区：[1]西安近代化学研究所,陕西西安710065

出　　处：《火炸药学报》2011年第3期76-78,90,共4页Chinese Journal of Explosives & Propellants

基　　金：国防科工委计量研究项目(J092007A008)

摘　　要：为了定值标准物质DIANP,建立了测定DIANP纯度的电位滴定法。该滴定法的条件是:DMSO作溶剂,NaOH溶液作反应试剂,使DIANP中的N3-和AgNO3中的Ag+反应,生成AgN3沉淀。由EQP曲线算得标准物质DIANP纯度为99.85%,相对标准偏差为0.13%,与液相色谱法比较,结果无显著差异,该方法的扩展不确定度为0.3%。In order to certificate the standard substance 1,5-diazido-3-nitrazpentane（DIANP）,an electrode potential titration of determining the purity of DIANP was established.The conditions of the titration method were as follow：dimethysulfoxide（DMSO）as solvent,adding sodium hydroxide solution as reaction regent,and making N-3 in DIANP and Ag＋ in AgNO3 react to form the precipitate of AgN3.The purity of standard substance DIANP calculated by the EQP curve was 99.85% and the relative standard derivation was 0.13%.There was no significant varation between the results obtained by electrode potential titration and HPLC method.The expanded uncertainty of this method was 0.3%.

关 键 词：分析化学 标准物质 DIANP 电位滴定法 测量不确定度 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O657.1[理学—分析化学]