| 光谱学与光谱分析 |
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| Separation of Cr(Ⅵ) and Organic Cr(Ⅲ) in Natural Water by Weak Basic Anion Exchange Resin and Determination by ICP-AES |
| MA Hong-mei, ZHU Zhi-liang*,ZHANG Rong-hua, ZHAO Jian-fu |
| State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China |
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Abstract For the separation and determination of inorganic Cr(Ⅵ) and organic Cr(Ⅲ) in natural water, a sensitive and selective method was developed using a weak basic anion exchange resin micro-column and inductively coupled plasma atomic emission spectrometry (ICP-AES). Under optimized conditions, organic Cr(Ⅲ) and inorganic Cr(Ⅵ) were retained on the column, and eluted with 1.0 mol·L-1 HCl and 2.0 mol·L-1 NH4NO3＋0.5 mol·L-1 NH3·H2O respectively. Then the concentrations of Cr(Ⅵ) and organic Cr(Ⅲ) were determined by ICP-AES. The detection limits of organic Cr(Ⅲ) and inorganic Cr(Ⅵ) were 1.1 and 1.4 μg·L-1,and relative standard deviations(RSD) were 3.8％ and 5.6％ respectively. The proposed method has been applied to the determination and separation of chromium in several practical water samples with a recovery between 90.4% and 106.3%.
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Received: 2005-11-01
Accepted: 2006-03-16
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Corresponding Authors:
ZHU Zhi-liang
E-mail: zzl@mail.tongji.edu.cn
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| Cite this article: |
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MA Hong-mei,ZHU Zhi-liang,ZHANG Rong-hua, et al. Separation of Cr(Ⅵ) and Organic Cr(Ⅲ) in Natural Water by Weak Basic Anion Exchange Resin and Determination by ICP-AES[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(01): 165-168.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2007/V27/I01/165 |
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