Abstract：Scandium fluoride is one of the major feedstocks for scandium production. The determination of iron in scandium fluoride is very important to save resources and guarantee the quality of scandium product. Scandium is one of rare earth elements, but it is hardly and completely digested by nitric acid and perchloric acid which are usually used to decompose rare earth fluorides. The scandium fluoride sample was dissolved with nitric acid-perchloric acid-sulfuric acid (1+1). The volume fraction of nitric acid in testing solution was 10%. Fe 238.204 nm was chosen as the analytical line. Two-point method was used for background correction. The method for the determination of iron in scandium fluoride by inductively coupled plasma atomic emission spectrometry (ICP-AES) was established. The influence of matrix effect of scandium on the determination of iron could be ignored. Therefore, the matching of scandium matrix was not required, and only the acid with same concentration was added into testing solution in standard series solution for acid matrix matching to prepare the calibration curve. The correlation coefficient of calibration curve for iron was higher than 0.999. The limit of detection was 0.001 0%, and the limit of quantification was 0.003 3%. The proposed method was applied for the determination of iron in scandium fluoride sample. The relative standard deviations (RSD, n=11) of determination results was 2.2%. Meanwhile, the found results were consistent with those obtained by alkali fusion-spectrophotometry.
罗芝雅, 王贵超, 刘荣丽, 罗勉, 石雪峰, 吴希桃. 电感耦合等离子体原子发射光谱法测定氟化钪中铁[J]. 冶金分析, 2021, 41(2): 49-53.
LUO Zhiya, WANG Guichao, LIU Rongli, LUO Mian, SHI Xuefeng, WU Xitao. Determination of iron in scandium fluride by inductively coupled plasma atomic emission spectrometry. , 2021, 41(2): 49-53.
Cristina,Müeller,Katharina.Scandium and terbium radionuclides for radiotheranostics: current state of development towards clinical application[J].The British Journal of Radiology,2018,91(1091): 13-17.
[2]
C T Horovitz.Scandium its occurrence, chemistry physics, metallurgy, biology and technology[M].United States of America:Elsevier,2012.
[3]
Ninomiya Hiroki,Oka Kunihiko,Hase Izumi,et al.Superconductivity in a scandium borocarbide with a layered crystal structure[J].Inorganic Chemistry,2019,58(22):15629-15636.
[4]
Krystyna Pyrzyńska,Krzysztof Kilian,Mateusz Pńgier.Separation and purification of scandium: From industry to medicine[J].Separation & Purification Reviews,2019,48(1): 65-77.
[5]
杨峰.氟化稀土中铁量与铝量同时测定方法的试验研究[J].江西有色金属,1999,13(2):39-42.YANG Feng.Measuring iron content and aluminum content of RE fluorides at the same time[J].Jiangxi Nonferrous Metals,1999,13(2): 39-42.
[6]
高立红,周凯红,王燕霞,等.硅钼蓝分光光度法测定氟化稀土中二氧化硅[J].冶金分析,2017,37(4):57-61.GAO Lihong,ZHOU Kaihong,WANG Yanxia,et al.Determination of silicon dioxide in rare earth fluoride by silicomolybdic blue spectrophotometry[J]. Metallurgical Analysis,2017,37(4): 57-61.
[7]
Morrison C, Sun H,Yao Y,et al.Methods for the ICP-OES analysis of semiconductor materials[J]. Chemistry of Materials,2020,32(5):24-26.
[8]
Novaes C G, Bezerra M A,E G P da Silva,et al. A review of multivariate designs applied to the optimization of methods based on inductively coupled plasma optical emission spectrometry (ICP-OES)[J].Microchemical Journal,2016,128:331-346.
[9]
Samar Thiab,Mark Wainwright,Philip Riby.The development of analytical procedures using ICP-OES and ICP-MS for the analysis of trace metals in pharmaceutical formulations[J].British Journal of Pharmacy,2017,70(20):1155-1165.
[10]
陈维青,陈泽明.用ISO《测量不确定度表达指南》评估ICP-AES法测定不确定度[J].理化检验(化学分册),2003,39(1): 28-32.CHEN Weiqing,CHEN Zeming.Evaluation of uncertainty of ICP-AES measurements according to the ISO document guide to the expression of uncertainty in measurement[J].Physical Testing and Chemical Analysis (Part B:Chemical Analysis),2003,39(1): 28-32.
