摘要
研究比较了重量法和烘干法测定氯化钾、氯化铯单盐以及混合溶液浓度的准确性.得出对于单盐溶液,氯化银重量法、四苯硼钠重量法和烘干法均能相对准确地测定其浓度;对于混合溶液,烘干法与重量法相比更加准确;研究表明烘干法更适于三元体系KCl-CsCl-H_2O中钾铯含量的准确测定.
The accurary with the concentration of the pure solution and the mixture solution of potassium chloride and cesium chloride determined by gravimetric method and drying method were mainly studied and compared.For the pure solution,the gravimetric method and drying method both can determine the concentration relatively accurately;while for the mixture solution,the results determined by drying method are more accurate than that by gravimetric method;the research shows that the drying method is more suitable for the determination of concentration of potassium and cesium in the ternary system KClCsCl-H_2O.
引文
[1]Guo L J,Tu L Y,Wang Y X,et al.Water Activity and Solubility Measurements and Model Simulation of the CsCl-MgCl2-H2O Ternary System at 323.15K[J].Journal of Chemical&Engineering Data,2018,63:483-487.
[2]冉广芬.钾的检测方法及其应用[J].盐湖研究,2014,26(3):68-72.
[3]冉广芬,马海州,孟瑞英,等.四苯硼钠-季铵盐容量法快速测钾[J].盐湖研究,2009,17(2):39-42.
[4]芮燕辉,任红伟,王相明,等.一种卤水中钾离子含量的快速测定方法[J].盐湖研究,2018,26(2):48-51.
[5]蒋育澄,岳涛,高世扬,等.重稀碱金属铷和铯的分离分析方法进展[J].稀有金属,2002,26(4):299-303.
[6]刘泽宇.铯的溶剂萃取及富集分离方法研究[D].西宁:中国科学院青海盐湖研究所,2018.
[7]阳海棠,曾德文,周红艳.大量NH4Cl存在的水盐体系中测定LiCl含量的分析方法研究[J].盐湖研究,2010,18(3):35-38.
[8]Yang H T,Zeng D W,Zhou H Y.Solubility of the Ternary System LiCl+NH4Cl+H2O[J].Journal of Chemical&Engineering Data,2011,56,1096-1104.
[9]张永明,刘成林,马黎春,等.50℃KCl-RbCl/CsCl-H2O三元体系等温相平衡研究[J].盐湖研究,2013,21(3):56-64.
[10]司学兵,高云龙.四苯硼酸钠重量法测钾含量方法的改进[J].安徽化工,2002(4):46-47.
[11]孙海霞,曹红翠,保英莲,等.基于Pitzer模型的25℃KCl-CsCl-H2O体系溶解度预测研究[J].西南民族大学学报,2014,40(1):2-3.
[12]李红霞,董欧阳,姚燕,等.质量滴定分析方法及其应用[J].盐湖研究,2011,19(3):31-36.
[13]李红霞.四元交互体系Li+,Mg2+//Cl-,SO2-4-H2O及其子体系Mg2+//Cl-,SO2-4-H2O多温相平衡研究[D].西宁:中国科学院青海盐湖研究所,2014.
[14]中国科学院青海盐湖研究所分析室.卤水和盐的分析方法[M].北京:科学出版社,1988:47-52.
[15]Kolthoff I M,Sandell E B.Quantitative chemical analysis[M].London:The Macmillan Company,1969:580-587.