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选用TBP(磷酸三丁酯)柱上分离技术分离铀与待测元素,超声波雾化进样,ICP-AES法对二氧化铀中二十一个微量杂质元素测定的工作参数、酸度干扰、共存元素干扰、载气流量的选择、去溶温度等进行了试验研究。当取样量为250mg时,Al,Ag,Ba,Ca,Cd,Co,Cr,Cu,Fe,In,Li,Mg,Mn,Mo,Ni,Pb,Sn,Ti,V,Y和Zn的测定范围是0.2～100ng·g~(-1),回收率为94％～110％,RSD(n=8)为0.8％～6.2％。
The TBP (tributyl phosphate) column separation technology was used to separate uranium from the elements to be tested. Ultrasonic nebulization and ICP-AES were used to determine the working parameters, acidity and coexistence of twenty-one trace impurities in uranium dioxide Element interference, the choice of carrier gas flow, to the dissolution temperature were tested. Determination of Al, Ag, Ba, Ca, Cd, Co, Cr, Cu, Fe, In, Li, Mg, Mn, Mo, Ni, Pb, Sn, Ti, V, Y and Zn at a sample volume of 250 mg The recoveries ranged from 94% to 110% and RSD (n = 8) ranged from 0.8% to 6.2% with the range of 0.2-100 ng · g -1.