Determination of REEs in geological samples by preconcentration-neutron activation analysis on mini-reactor

JIANG Huaikun XU Weidong

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Determination of REEs in geological samples by preconcentration-neutron activation analysis on mini-reactor

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- Determination of REEs in geological samples by preconcentration-neutron activation analysis on mini-reactor
- NUCLEAR TECHNIQUES Issue 4, (1998)
- 作者机构：
  
  山东省地质科学实验研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TL271.99
- Published：01 April 1998
- 稿件说明：
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[1]姜怀坤,徐卫东.前处理─微堆中子活化分析测定地学样品中的稀土元素[J].核技术,1998(04):242-246.

JIANG Huaikun XU Weidong. Determination of REEs in geological samples by preconcentration-neutron activation analysis on mini-reactor[J]. Nuclear techniques, 1998, (4).
[1]姜怀坤,徐卫东.前处理─微堆中子活化分析测定地学样品中的稀土元素[J].核技术,1998(04):242-246. DOI：

JIANG Huaikun XU Weidong. Determination of REEs in geological samples by preconcentration-neutron activation analysis on mini-reactor[J]. Nuclear techniques, 1998, (4). DOI：

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。

Abstract

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.

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