阳离子交换分离ICP-AES法测定高放废液中微量钌、铑、钯  

A DETERMINATION METHOD OF Ru, Rh AND Pd IN HIGH-LEVEL LIQUID WASTE(HLLW) BY CATIONEXCHANGE SEPARATION AND ICP-AES MEASUREMENT

作　　者：曹德声 段世蓉 秦凤洲[1] 李金英[1] 张怀礼[1] 

机构地区：[1]中国原子能科学研究院,北京102413

出　　处：《原子能科学技术》1992年第5期31-35,共5页Atomic Energy Science and Technology

摘　　要：用盐酸及氯化钠处理后的高放废液试样,通过强酸型阳离子交换树脂柱,杂质元素被吸附在树脂上,Ru、Rh和Pd以氯络阴离子形式存在,流入淋洗液中。分离纯化后的试液用ICP-AES法测定其中Ru、Rh和Pd的含量。Ru含量在(35—230)×10^(-6)范围内,重加回收率为90%,相对标准偏差(RSD)为6%;Rh含量在(2—20)×10^(-6)时,重加回收为106%,RSD为10%;Pd含量小于2×10^(-6)时重加回收为72%。The paper describes a determination method of Ru. Rh and Pd in HLLW with cation-exchange separation and ICP-AES measurement. A sample of HLLW was treated with the hydrochloride acid containing enough sodium chloride, then passed through a strongly acidic cation-exchange resin col umn, the Ru, Rh and Pd as ehloro-complexs go to the eluate while the interference elements are ab sorbcd on the resins in the column. The Ru, Rh and Pd are collected and determined by ICP-AES. The obtained results show that the recovery is 90% and the relative standard deviation is 6% as the Ru con tent within the range (35—230)×10^(-6) the recovery is 106% and RSD is 10% as the Rh content within (2 20)×10^(-6); and the recovery of Pd is 72% as its content less than 2×10~6.

关 键 词：阳离子交换 高放废液 钌 铑 钯 

分 类 号：TL941.101[核科学技术—辐射防护及环境保护]