铀矿冶2024，Vol.43Issue(3)：50-55,6.DOI:10.13426/j.cnki.yky.2024.03.06
氢化物发生一原子荧光法同时测定铀矿石中的砷和汞
Simultaneous Determination of As and Hg in Uranium Ore by Hydride Generation Atomic Fluorescence Spectrometer
丁媛媛 1卢阳 1杜凯华 1刘武燃 1郭国龙1
作者信息
- 1. 核工业北京化工冶金研究院,北京 101149
- 折叠
摘要
Abstract
A method for simultaneous determination of As and Hg in uranium ore by hydride genera-tion atomic fluorescence spectrometer was established,and the effects of digestion temperature,diges-tion time,medium system,KBH4 concentration,and uranium content on the detection results were investigated.The results show that the optimal conditions for this method are to dissolve uranium ore with(1+1)aqua regia for 60 minutes at 125 ℃,(5+95)HCl as the medium and 2.0％KBH4 solution as the reducing agent.The detection limits of this method are 0.006 μg/g(for As)and 0.001 μg/g(for Hg),with relative standard deviations of 2.46％(for As)and 4.22％(for Hg),and recovery rates of 98％～103％(for As)and 97％～106％(for Hg).This method has high accuracy and precision,and can meet the requirements for the determination of As and Hg in uranium ore.关键词
氢化物发生-原子荧光法/铀矿石/As/Hg/加标回收率Key words
hydride generation atomic florescence spectrometer/uranium ore/As/Hg/recovery分类
化学化工引用本文复制引用
丁媛媛,卢阳,杜凯华,刘武燃,郭国龙..氢化物发生一原子荧光法同时测定铀矿石中的砷和汞[J].铀矿冶,2024,43(3):50-55,6.
