摘要
报道用过氧化钠熔样、阳离子树脂交换──ＰＭＢＰ－乙酸丁酯萃取、甲酸反萃取、再作微堆中子活化分析以测定Ｙ和Ｌａ系所有ＲＥＥ的工作。分析结果的相对标准偏差小于５％，相对误差小于１２％，检出限低（１０－６－１０－８）．满足地学样品中微量、痕量ＲＥＥ的分量测定。
A preconcentration-NAA method of measuring Y and all REEs in La series is described. The REE samples were melten with Na2O2 and interference elements were separated by ion exchange, PMBP extraction, formic acid antiextraction, etc. The determination of REEs was then completed by NAA on a miniatute reactor as neutron source. The whole 15 REEs including Y can be analysed by this method. In addition to higher precision (RSD<5%) and lower detection limits (10-6-10-8), the accuracies for REE determination are greatly improved.
出处
《核技术》
CAS
CSCD
北大核心
1998年第4期242-246,共5页
Nuclear Techniques
基金
地质矿产部"八五"重点地质科技项目
