Determination of eight elements in niobium-molybdenum alloy by inductively coupled plasma atomic emission spectrometry
LU Qing1,2, FAN Li-xin3, LI Jian-qiang4
1.Central Iron & Steel Research Institute, Beijing 100081, China; 2. NCS Testing Technology Co., Ltd., Beijing 100094, China; 3.Beijing General Research Institute of Mining and Metallurgy,Beijing 102628, China; 4.Department of Chemistry, University ofScience and Technology Beijing,Beijing 100083, China
Abstract：The sample was digested with the mixed acid combined with 5.0 mL of hydrofluoric acid and 10.0 mL of nitric acid. Ce 407.570 nm, Cu 217.895 nm, Fe 234.350 nm, Er 390.631 nm, Mg 383.829 nm, Mn 257.610 nm, Pb 283.305 nm and Zn 213.857 nm were selected as analytical lines. Consequently, an analysis method of eight elements (including Ce, Cu, Fe, Er, Mg, Mn, Pb and Zn) in molybdenum-niobium alloy by inductively coupled plasma atomic emission spectrometry (ICP-AES) was established. The influence of major elements (Mo, Nb and Al) on test elements was investigated. The results indicated that these elements had no significant influence on determination. The linear correlation coefficients of calibration curves were all higher than 0.999. The detection limits of elements were between 5.4 μg/g and 63 μg/g. The proposed method was applied for the determination of Ce, Cu, Fe, Er, Mg, Mn, Pb and Zn in molybdenum-niobium alloy samples. The relative standard deviations (RSD, n=6) were between 0.89% and 4.4%. The recoveries were between 98% and 102%. The content of Ce, Cu, Fe, Er, Mg, Mn, Pb and Zn in molybdenum-niobium alloy samples was determined according to the experimental method. The results were consistent with those obtained by inductively coupled plasma mass spectrometry (ICP-MS).
陆青,范丽新,李建强. 电感耦合等离子体原子发射光谱法测定钼铌合金中8种元素[J]. 冶金分析, 2017, 37(3): 64-69.
LU Qing, FAN Li-xin, LI Jian-qiang. Determination of eight elements in niobium-molybdenum alloy by inductively coupled plasma atomic emission spectrometry. , 2017, 37(3): 64-69.
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