HBTMPDTP-TBP从硝酸中协同萃取镅  

SYNERGISTIC EXTRACTION OF AMERICIUM WITH HBTMPDTP TBP FROM NITRIC ACID

作　　者：王兴海[1] 焦荣洲[1] 朱永 

机构地区：[1]清华大学核能技术设计研究院,北京102201

出　　处：《核化学与放射化学》1999年第4期213-218,共6页Journal of Nuclear and Radiochemistry

基　　金：国家自然科学基金

摘　　要：研究了二(2,4,4三甲基戊基)二硫代膦酸(HBTMPDTP)磷酸三丁酯(TBP)煤油(OK)从pH=2～4的10molLNaNO3介质中萃取示踪量镅的行为。结果表明,HBTMPDTPTBP体系有明显的协萃效应。考察了HBTMPDTP和TBP浓度及平衡水相pH值对镅的分配比的影响,用斜率法测定了协萃配合物的组成为:AmA3·HA·TBP。计算了协萃平衡常数并讨论了萃取机理。Extraction of trace amount of americium with HBTMPDTP TBP from nitric acid solution is studied and obviously synergistic extraction occurrs. The influences of HBTMPDTP concentration, TBP concentration and pH value in equilibrated aqueous solution are investigated. The complex is assumed as AmA 3·HA·TBP with slop method. The extraction constant is calculated and extraction mechanism is discussed.

关 键 词：HTMPDTP TBP 协同萃取 镅 硝酸 

分 类 号：O614.354[理学—无机化学] O658.2[理学—化学]