膜基萃取过程中在线分析技术及其在钕钐传质中的应用  

On-line Analysis Technique and Application in Transfer of Neodymium and Samarium in the Based Membrane Extraction

作　　者：张凤君[1] 云影[2] 林学钰[1] 罗芳[3] 李德谦[3] 吴庸烈[3] 

机构地区：[1]吉林大学环境与资源学院环境工程系,吉林长春130026 [2]北京师范大学环境科学研究所环境模拟与污染控制国家重点实验室,北京100875 [3]中国科学院长春应用化学研究所稀土及物理开放实验室,吉林长春130022

出　　处：《稀土》2001年第6期1-5,共5页Chinese Rare Earths

基　　金：国家重点研究发展规划项目 ( G19980 6 130 2 ) ;国家自然科学基金项目 ( 2 97710 2 8;2 980 10 0 4)

摘　　要：采用氢离子电极和氨气敏电极与流动注射分析相结合的在线分析技术 ,对中空纤维膜器中氨化HEH/ EHP-煤油体系萃取钕、钐过程的氢离子及铵离子进行在线分析。结果表明 ,通过对电极流动池的改进及工作条件的选择 ,氢离子电极和氨气敏电极均可较好地实现离子的在线分析功能。通过对氨化 HEH/ EHP萃取钕、钐的研究 ,提出了氨化 HEH/ EHP在膜基萃取过程中 ,H+和 NH4+的传质规律。同级萃取反萃取过程中 ,也有相同的结论。Hydrogen ion selective electrode and ammonia electrode combined with flow injection analysis method were used to determine hydrogen and ammonia on-line in the hollow fiber flow injection membrane extraction of Nd(Ⅲ) and Sm(Ⅲ) with HEH/EHP.The results show that the two ions can be on-line analyzed successfully using the modified flow cell under the optimum conditions.The transfer of H + and NH 4 + was obtained according to the study on the based membrane extraction of Nd(Ⅲ) and Sm(Ⅲ)with saponificated HEH/EHP.The conclusions were almost the same when extraction and stripping were carried out simultaneously.

关 键 词：流动注射分析 氨气敏电极 膜基萃取 稀土 氢离子电极 在线分析技术 钕 钐 中空纤维膜器 氨化HEH/EHP 

分 类 号：TQ028.32[化学工程] TQ016.51