| 光谱学与光谱分析 |
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| Determination of Terbium(Ⅲ) with EHPG-Tb(Ⅲ) System by Fluorescence Spectroscopy |
| ZHAO Chun-gui,LI Xiao-li,YANG Bin-sheng |
| Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan 030006, China |
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Abstract The fluorescence of terbium was sensitized after addition of terbium to the ethylene-N, N’-bis (o-hydioxyphenylglycine) (EHPG) solution. A novel and simple method used for the determination of Tb(Ⅲ) was developed by means of fluorescence spectroscopy in the presence of EHPG. It was showed that the relative fluorescence intensity is proportional to the concentration of terbium ions, while the molar ratio of terbium to EHPG is less than 1.0 in the system. The maximum wavelengths of excitation and emission are 295 and 547 nm respectively. The optimal range of pH is 7-9. The linear range of detection of the concentration of terbium is from 1.0×10-8mol·L-1 to 1.0×10-5 mol·L-1,with a detection limit of 1.18×10-9 mol·L-1. The relative standard deviation is still within ±3% in the presence of other lanthanide ions. The method was applied to the determination of the recoveries of synthetic samples and a rare earth sample with satisfactory results.
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Received: 2006-05-15
Accepted: 2006-08-16
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Corresponding Authors:
ZHAO Chun-gui
E-mail: chungui@sxu.edu.cn
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| Cite this article: |
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ZHAO Chun-gui,LI Xiao-li,YANG Bin-sheng. Determination of Terbium(Ⅲ) with EHPG-Tb(Ⅲ) System by Fluorescence Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(12): 2546-2549.
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https://www.gpxygpfx.com/EN/Y2007/V27/I12/2546 |
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