Abstract：The scandium could react with arsenazo-Ⅲ in HCl-KCl buffer solution at pH 1.8 to form stable purple red complex with maximum absorption peak at 680 nm. The effect of acidity, arsenazo-Ⅲ dose, reaction time and coexisting element on the coloring was studied. The results indicated that the acidity and arsenazo-Ⅲ dose had great influence on the system absorbance. The optimal range of pH and arsenazo-Ⅲ dose was 1.5-2.0 and 1.5-2.5 mL, respectively. The temperature exhibited little influence on the coloring reaction. The determination could be conducted after coloring at room temperature for 5 min. Moreover, the absorbance could be basically remained within 120 min. The determination of scandium was seriously interfered by iron, titanium and zirconium, which could be eliminated by precipitation separation using cupferron. Beer’s law was obeyed for scandium in range of 0-1.0 μg/mL under the optimal conditions. The apparent molar absorptivity was 1.8×104 L·mol-1·cm-1. The proposed method was applied to the determination of trace scandium in aluminum alloy, and the relative standard deviations (RSD) were not more than 2%. The determination results were basically consistent with the certified values of standard samples or those obtained by comparative method (inductively coupled plasma atomic emission spectrometry).
杨涛, 刘吉波, 包新军. 新疆某铜钪矿中钪的分布状态研究[J]. 稀土, 2014, 35(4):35-41. YANG Tao, LIU Ji-bo, BAO Xin-jun.Distribution state of scandium in Xinjiang copper and scandium ore[J]. Chinese Rare Earths, 2014, 35(4):35-41.
[2]
Sun Y Y,Song M,He Y H. Effects of Sc content on the mechanical properties of Al-Sc alloys[J]. Rare Metals, 2010, 29(5):451-455.
[3]
Robert P. Adsorptive stripping determination of scandium with mordant blue 9 on silver amalgam film electrode[J]. Electroanalysis, 2010, 22(16):1851-1856.
[4]
Jerez J, Isaguirre A C, Bazan C, et al. Determination of scandium in acid mine drainage by ICP-OES with flow injection on-line preconcentration using oxidized multiwalled carbon nanotubes[J].Talanta,2014,124:89-94.
[5]
Cerutti S, Escudero L A, Gasquez J A, et al. On-line preconcentration and vapor generation of scandium prior to ICP-OES detection[J]. Journal of Analytical Atomic Spectrometry, 2011, 26(12):2428-2433.
[6]
李帆, 冯艳秋. ICP-AES法测定铝合金中钪元素的方法研究[J]. 光谱学与光谱分析, 2003, 23(5):968-971.LI Fan, FENG Yan-qiu. Determination of scandium in aluminum alloy by ICP-AES[J]. Spectroscopy and Spectral Analysis, 2003, 23(5):968-971.
[7]
李芬, 李启华, 樊朝英,等. 电感耦合等离子体原子发射光谱法测定镁钪合金中钪[J]. 理化检验:化学分册, 2011,47(7):816-817.LI Fen, LI Qi-hua, FAN Chao-ying, et al. ICP-AES determination of scandium in Mg-Sc alloy[J]. Physical Testing and Chemical Analysis Part B: Chemical Analysis, 2011, 47(7):816-817.
[8]
Liu J, Yang X L, Cheng X Z, et al. Synthesis and application of ion-imprinted polymer particles for solid-phase extraction and determination of trace scandium by ICP-MS in different matrices[J]. Analytical Methods, 2013(5):1811-1817.
[9]
胡珊玲, 周建光. 电感耦合等离子体质谱法测定稀土研究进展[J]. 稀土, 2012, 33(5):79-86. HU Shan-ling, ZHOU Jian-guang. Research progress in rare earth determination by inductively coupled plasma mass spectrometry[J]. Chinese Rare Earths, 2012, 33(5):79-86.
[10]
刘江斌, 赵峰, 余宇, 等. X射线荧光光谱法同时测定地质样品中铌钽锆铪铈镓钪铀等稀有元素[J]. 岩矿测试, 2010, 29(1):74-76.LIU Jiang-bin, ZHAO Feng, YU Yu, et al. Simultaneous determination of Nb, Ta, Zr, Hf, Ce, Ga, Sc and U in geological samples by X-ray fluorescence spectrometry[J]. Rock and Mineral Analysis, 2010, 29(1):74-76.
[11]
Shahida S, Ali A, Khan M H. On-line spectrophotometric determination of scandium after preconcentration on XAD-4 resin impregnated with nalidixic acid[J]. Journal of the Iranian Chemical Society, 2013, 10(3):461-470.
[12]
邓海霞, 王克勤, 王皓, 等. 赤泥盐酸浸出液中钪的分光光度测定[J]. 稀有金属, 2011, 35(5):764-769.DENG Hai-xia, WANG Ke-qin, WANG Hao, et al. Spectrophotometric determination of scandium in hydrochloric acid leaching solution of red mud[J]. Chinese Journal of Rare Metals, 2011, 35(5):764-769.
[13]
马淞江, 罗道成. 阴离子树脂萃取富集-埃铬青R光度法测定赤泥中痕量钪[J]. 冶金分析, 2011, 31(8):40-43.MA Song-jiang, LUO Dao-cheng. Spectrophotometric determination of trace scandium in red mud using eriochrome cyanine R after extraction enrichment with anion resin [J]. Metallurgical Analysis, 2011, 31(8):40-43.
[14]
王翠珍, 刘旭华, 周广柱, 等. CSPS显色剂光度法测定微量钪的研究[J].山东科技大学学报:自然科学版, 2011, 30(6):39-42.WANG Cui-zhen, LIU Xu-hua, ZHOU Guang-zhu, et al. Study on photometric determination of trace scandium with chromogenic reagent CSPS[J]. Journal of Shandong University of Science and Technology: Natural Science, 2011, 30(6):39-42.
[15]
段群章. 矿冶物料中钪的光度分析[J]. 湿法冶金, 1999(2):57-64.DUAN Qun-zhang.Progress in photometric determination of scandium in mining and metallurgy materials[J]. Hydrometallurgy of China, 1999(2):57-64.
