| Minimizing chemical interference errors for the determination of lithium in brines by flame atomic absorption spectroscopy analysis |
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| 引用本文： | WEN Xianming MA Peihua ZHU Geqin WU Zhiming. Minimizing chemical interference errors for the determination of lithium in brines by flame atomic absorption spectroscopy analysis[J]. 北京科技大学学报, 2006, 28(8): 732-732 |
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| 作者姓名： | WEN Xianming MA Peihua ZHU Geqin WU Zhiming |
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| 作者单位： | [1]Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China [2]Graduate School of Chinese Academy of Sciences, Beijing 100039, China |
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| 摘 要： | Chemical interferences （ionization and oxide/hydroxide tormarlon/ on me atomic absorbance signal of lithium in FAAS analysis of brine samples are elaborated in this article. It is suggested that inadequate or overaddition of deionization buffers can lead to loss of sensitivities under particular operating conditions. In the analysis of brine samples, signal enhancing and oxide/hydroxide formation inducing signal reduction resulting from overaddition of deionization buffers can be seen with varying amounts of chemical buffers. Based on experimental results, the authors have arrived at the optimized operating conditions for the detection of lithium, under which both ionization and stable compound formation can be suppressed.
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| 关 键 词： | 分析化学 简便方法 锂 火焰原子吸收光谱法 |
Minimizing chemical interference errors for the determination of lithium in brines by flame atomic absorption spectroscopy analysis |
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| WEN;Xianming;MA;Peihua;ZHU;Geqin;WU;Zhiming. Minimizing chemical interference errors for the determination of lithium in brines by flame atomic absorption spectroscopy analysis[J]. Journal of University of Science and Technology Beijing, 2006, 28(8): 732-732 |
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| Authors: | WEN Xianming MA Peihua ZHU Geqin WU Zhiming |
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| Abstract: | Chemical interferences (ionization and oxide/hydroxide formation) on the atomic absorbance signal of lithium in FAAS analysis of brine samples are elaborated in this article. It is suggested that inadequate or overaddition of deionization buffers can lead to loss of sensitivities under particular operating conditions. In the analysis of brine samples,signal enhancing and oxide/hydroxide formation inducing signal reduction resulting from overaddition of deionization buffers can be seen with varying amounts of chemical buffers. Based on experimental results,the authors have arrived at the optimized operating conditions for the detection of lithium,under which both ionization and stable compound formation can be suppressed. This is a simplified and quick method with adequate accuracy and precision for the determination of lithium in routine brine samples from chemical plants or R&D laboratories,which contain comparable amounts of lithium with some other components. |
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| Keywords: | analytical chemistry simplified method FAAS lithium brine deionization oxide/hydroxide formation |
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