蒸馏后滴定法测定氯化钾中铵含量  

Determination of Ammonium in KCl by Titration after Distillation

作　　者：刘伟朝 程金莲 LIU Wei-chao;CHENG Jin-lian(Qinghai Hezhong Network Technology Co.,Ltd.,Xining 810000,China;Hexizhou Salt Chemical Product Quality Inspection and Testing Center,Golmud 816000,China)

机构地区：[1]青海和众网络科技有限公司,青海西宁810000 [2]海西州盐化工产品质量检验检测中心,青海格尔木816000

出　　处：《盐科学与化工》2022年第8期36-39,共4页Journal of Salt Science and Chemical Industry

基　　金：青海省重大专项盐湖资源制取金属锂产业链关键技术研究与示范(2019-GX-A5)。

摘　　要：文章采用蒸馏后滴定法测定氯化钾中铵含量,并通过对该方法进行检出限、准确度和精密度,以及与纳氏试剂分光光度法方法进行比对试验。结果表明:蒸馏后滴定法方法检出限为0.00045%,加标回收率在90%~105%之间,最大相对标准偏差<10%,最大极差≤0.002%,并且通过测定同一样品对结果数据进行F检验和t检验,两种方法无显著性差异,说明该方法可以用于氯化钾中铵含量的测定,且相较于纳氏试剂分光光度法,具有操作简便、耗时短、安全性高等特点。In this article,the ammonium content in KCl was determined by titration after distillation,and the detection limit,accuracy and precision of this method were compared with those of the Spectrophotometer method.The results showed that the detection limit of titrimetric method after distillation was 0.00045%,the recovery of standard addition was between 90%and 105%,the maximum relative standard deviation was less than 10%,and the maximum range was less than 0.002%,there is no significant difference between the two methods,which showed that the method can be used to determine the content of ammonium in potassium chloride,and has the advantages of simple operation,short time-consuming and high safety compared with the Spectrophotometer reagent.

关 键 词：氯化钾 铵 蒸馏后滴定法 

分 类 号：TQ075[化学工程]