| 光谱学与光谱分析 |
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| Study on Solid Phase Extraction and Spectrophotometric Determination of Uranium in Water with 2-(2-Quinolylazo)-5-Dimthylaminophenol |
| WANG Liang1, 2，YUAN Zhuo-bin1，2, HU Qiu-fen3, YANG Guang-yu3 , YIN Jia-yuan3 |
| 1. Department of Chemical Engineering, Dalian Nationalities University, Dalian 116600, China2. Institute of Applied Chemistry, Graduate School of Chinese Academy of Sciences, Beijing 100039, China3. Department of Chemistry, Yunnan University, Kunming 650091, China |
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Abstract A new chromogenic reagent 2-(2-quinolylazo)-5-Dimthylaminophenol (QADMAP) was synthesized, and its structure was verified by elemental analysis, infrared spectrum, 1H nuclear magnetic resonance spectrum，mass spectrum and UV-spectrum. The color reaction of QADMAP with uranium was studied. In the presence of pH 7.8 buffer solution, when fluorin ion and Triton X-100 medium exist, QADMAP can react with uranium and fluorin to form a stable 1∶1∶1 stable complex [F-∶QADMAP∶U(Ⅵ)]. The molar absorptivity is 1.05×105 L·mol-1·cm-1 at 590 nm. Beer’s law is obeyed in range of 0-20 μg/10 mL. The uranium in samples can be enriched and separated by solid phase extraction with TBP resin cartridge. This method is applied to the determination of uranium in water sample. The relative standard deviations are 2.2%-3.6%, and the recoveries are 94%-105%.
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Received: 2003-12-03
Accepted: 2004-04-18
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Corresponding Authors:
WANG Liang
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| Cite this article: |
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WANG Liang,YUAN Zhuo-bin,HU Qiu-fen, et al. Study on Solid Phase Extraction and Spectrophotometric Determination of Uranium in Water with 2-(2-Quinolylazo)-5-Dimthylaminophenol [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(05): 768-771.
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| URL: |
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http://www.gpxygpfx.com/EN/Y2005/V25/I05/768 |
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