Determination of Lithium and Strontium at High Concentration by ICP-AES
ZHAO Jing1, 2, LI Hai-jun1, SUN Bai1*, SONG Peng-sheng1
1. Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China
Abstract：The concentrations of lithium and strontium of highly concentrated lithium-strontium mixed solution were determined simultaneously by inductively coupled plasma-atomic emission spectroscopy (ICP-AES). After considering total salinity, relation coefficient and intensity at different wavelengths of lithium and strontium respectively, the determination wavelength was chosen for lithium and strontium separately. Using the determined wavelength, the result varies in terms of acid effect, equipment operating parameters and total salinity in the mixed solution. When the total salinity was in the range of 0.20%～0.60%, the linear correlation coefficient of Li and Sr was better than 0.999 9. After optimizing the instrument parameters, the standard solutions relative errors were within +0.59%～-0.66%, and the samples recoveries were within 99.14%～100.4%. This method is reliable due to stability and good recurrence. It can be used to determine high concentration of lithium and strontium ions in the lithium-strontium mixed solution accurately and rapidly.
Key words：ICP-AES;Lithium chloride;Strontium chloride;Orthogonal test
赵 静1, 2, 李海军1, 孙 柏1*, 宋彭生1 . ICP-AES测定卤化物溶液中高浓度锂锶含量的研究[J]. 光谱学与光谱分析, 2012, 32(06): 1666-1670.
ZHAO Jing1, 2, LI Hai-jun1, SUN Bai1*, SONG Peng-sheng1 . Determination of Lithium and Strontium at High Concentration by ICP-AES. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(06): 1666-1670.
[1] ZHENG Xi-yu, ZHANG Ming-gang, XU Chang(郑喜玉, 张明刚, 徐 昶). China Salt Lake Blog(中国盐湖志). Beijing: Science Press(北京: 科学出版社), 2002. [2] Farrell J R, Iies P J, Dimitrakopoulos T. Analytica Chimica Acta, 1996, 335(1): 111. [3] Hodge E M, Martinez P, Sweetin D. Journal of Chromatography A, 2000, 1075(1-2): 223. [4] Choi M S, Shin H S, Kil Y W. Microchemical Journal, 2010, 95(2): 274. [5] Detcheva A, Daskalova N, Velichkov S, et al. Spectrochimica Acta Part B, 2003, 58: 1481. [6] Lewen N, Nugent D. Journal of Pharmaceutical and Biomedical Analysis, 2010, 52(5): 652. [7] Idriss K A, Sedaira H, Ahmed S S. Talanta, 2009, 78: 81. [8] WANG Jin-cheng, ZHENG Yan-sheng(王金成, 郑衍生). Chemical J. of Chinese Universities(高等学校化学学报), 1992, 13(2): 163. [9] Djingova R, Ivanova Ju, Kuleff I. Journal of Radioanalytical and Nuclear Chemistry, 1998, 237(1-2): 25. [10] XIN Ren-xuan(辛仁轩). Plasma Emission Spectral Analysis(等离子体发射光谱分析). Beijing: Chemical Industry Press(北京: 化学工业出版社), 2004. [11] Mermet J M. Analytical Chimica Acta, 1991, 250: 85.
