摘要
本法采用ＴＢＰ萃取树脂，利用革取色谱分离技术，使铀与待测杂质元素在３ｍｏｌ／ＬＨＮＯ３介质中得到定量分离。用９７５型ＩＣＰ直读光谱仪同时测定八氧化三铀系列标准物质中Ｃａ、Ｃｄ、Ｃｒ、Ｃｕ、Ｆｅ、Ｍｇ、Ｍｎ、Ｍｏ、Ｎｉ、Ｐｈ和Ｓｎ１１种杂质。测定下限为０．０２—１．６μｇ·ｇ－１，相对标准偏差＜１０％。
The TBP extractant-containing resin and extraction chromatography technique were used to separate 11 trace elements in U3O8 CRMs.The sample was separated at a flow rate of 0. 5 mL/min with 3mol/L HNO3 as medium.A model 975 ICP direct reading spectrometer was used to determine the trace elements of Ca, Cd,Cr, Cu, Fe, Mg, Mn, Mo, Ni, Pb and Sn in U3O8 CRMs. The lowest quantitatively determinable concentration of impurities in U3O8 CRMs are 0.02--1.6μg/g. The RSD is less than 10%. The proposed method provides excellent and accurate analytical data for the U3O8 samples prepared as certified reference materials (CRMs ).
出处
《铀矿冶》
CAS
1994年第4期250-253,共4页
Uranium Mining and Metallurgy
关键词
ICP-AES
杂质元素
八氧化三铀
测定
ICP-AES
TBP
extratant-containing resin
U3O8 certified reference Materials
Impurity element
