摘要
利用石墨晶体预衍射X射线荧光法同时测定后处理工艺料液中的低浓铀和钚,建立了测定工艺料液中低浓铀和钚的分析方法。采用Ag靶散射线校正基体效应,以I(U)/Ic(Ag)-ρ(U)和I(Pu)/Ic(Ag)-ρ(Pu)作校正曲线,铀和钚的质量浓度均在2.00～1 000.00mg/L时线性相关系数(r2)均大于0.9990。测定结果表明U和Pu的精密度(sr)均优于5%,U的相对误差小于3.0%,Pu的相对误差小于4.0%。
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）-ρ（U） and I（Pu）/Ic（Ag）-ρ（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.
出处
《核化学与放射化学》
CAS
CSCD
北大核心
2012年第5期275-280,共6页
Journal of Nuclear and Radiochemistry
