碱性液中锂的在线监测  

On-Line Monitoring Analysis of Lithium in Alkaline Solution

作　　者：钱国英[1] 吴国梁[1] 朱军[1] 

机构地区：[1]中国科学院青海盐湖研究所,中国核动力研究设计院二所

出　　处：《盐湖研究》1996年第3期52-56,共5页Journal of Salt Lake Research

摘　　要：设计了小流量流通池，制备了低阻锂离子选择电极，模拟在线监测核反应堆一回路含铵水质中的氢氧化锂。９∶１体积比混合液样和ｐＨ５．５的Ａｘ１０（－２）ｍｏｌ／ＬＮＨ４Ａｃ－ＨＡｃ离子强度调节缓冲剂，泵入由聚醚三（二环已酰胺）ＰＶＣ膜锂电极和Ａｇ／ＡｇＣｌ参比电级构成的流通池，电位法测定，锂含量大于２×１０（－５）ｍｏｌ／Ｌ时，误差在５％以内。A Simulated method for on-line analysis of Li+ in the alkaline solution in nuclear reactor by the PVC membrane Li+-electrode based on the polyether tris (dicyclohexylamide) s was described. A mixed solution with the ratio of 9:1 for velocity of sample flow to velocity of ISAB flow was pumped into the circulation cell composed by a Li+-electrode and Ag/AgCl reference electrode. The ISAB was prepared by adjusting the NH4Ac solution PH of 1×10-2mol/L to 5. 5 using HAc solution. The relative errors of the potentiometry are less than 5% for the synthetic solution of LiOH,the concentration of which are higher than 2×10-5mol/L.

关 键 词：碱性液 锂 在线监测 电位法 

分 类 号：O614.111[理学—无机化学]