摘要
建立了借助于铬天青S(CAS)、N-十二烷基二甲基铵基乙酸(DDMAA)测定高放废液中Al的分光光度法。20倍于Al的Cr、Fe、Mn、Mo和Ni,10倍于Al的Cu和5倍于Al的Ce、Ti和Zr等杂质的存在,对测定Al的干扰在允许范围内。U对Al的测定干扰严重,采用5%TOPO-CHCl_3萃取分离可予以消除。铝量在0—0.20μg/ml范围内服从比尔定律。合成样品的分析精密度为1.6%,回收率为(98102)%。后处理厂高放废液样品的分析精密度为3%,重加回收率为(96—104)%。
The spectrophotometric determination of Al in high-level liquid waste is described. It is based on the formation of Al-CAS-DDMAA ternary complex. When the quantities of Fe. Ni, Cr. Mo. Mn are 200 times of Al. the quantity of Cu is 10 times of Al and the quantities of Ce. Ti, Zr are 5 times of Al, there is no influence on the determination of Al. The interference of U in serious. but can be elimi nated by extraction with 5% TOPO-CHCl_3. The absorption obeys the Beer law when the content of A is in the range of 0—2; 00 μg/10 ml. The precision is 1.6% and the recovcry is (98—102 )% for the synthetic sample. The precision is 3% and the additional recovery is (96—104)% for the sample from the high level liquid waste (HLLw).
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
1992年第5期13-17,共5页
Atomic Energy Science and Technology
关键词
高放废液
分光光度法
铝
Spectrophotometry determination, Aluminium, HLLW.
