核化学与放射化学2012，Vol.34Issue(5)：275-280,6.
石墨晶体预衍射X射线荧光法同时测定工艺样品中的低浓铀和低浓钚
Simultaneous Determination of Low Concentration Uranium and Plutonium in Reprocessing Samples by HOPG Pre-Diffraction EDXRF
吉永超 1牟凌 1马精德 1姜国杜1
作者信息
- 1. 中核集团四○四有限公司第三分公司,甘肃兰州 732850
- 折叠
摘要
Abstract
An analytical method for low concentration uranium and plutonium was developed. In this method uranium and plutonium sampled from nuclear fuel reprocessing solutions were simultaneously determined by highly oriented pyrolytic graphite (HOPG) pre-diffraction EDXRF. The matrix influence was corrected by plotting I(U)/Ic(Ag)-p(U) and I(Pu)/rc(Ag)-p(Pu) instead of I(U)-m(U) and I(Pu)-m(Pu) as their calibration curves where I(Ag) was the intensity of a scattered line from a silver target. The square of correlation coefficient (r2) is better than 0. 999 0 for both uranium and plutonium in the concentration range 2. 00-1 000. 00 mg/L. The experimental measurement results show that the precision (sr) is better than 5% for both uranium and plutonium, and the relative error is less than 3. 0% and 4. 0% for uranium and plutonium, respectively.关键词
石墨晶体预衍射X射线荧光法/U/PuKey words
HOPG pre-diffraction EDXRF/ uranium/ plutonium分类
化学化工引用本文复制引用
吉永超,牟凌,马精德,姜国杜..石墨晶体预衍射X射线荧光法同时测定工艺样品中的低浓铀和低浓钚[J].核化学与放射化学,2012,34(5):275-280,6.
