| 光谱学与光谱分析 |
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| Preconcentration of Trace Pd(Ⅱ) on Crosslinked Chitosan and Determination by Graphite Furnace Atomic Absorption Spectrometry |
| QIAN Sha-hua, XIANG Luo-jing*,DENG Hong-bing, XIAO Mei, LIN Han, LI Xue-qin |
| College of Resource and Environmental Science, Wuhan University, Wuhan 430079, China |
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Abstract A novel crosslinked chitosan(CCTS) not dissolved in acidic or alkaline solutions was synthesized by the crosslinking reaction of chitosan (CTS) with crosslinking agent (3-chloro-1,2-epoxypropane). The adsorption capability of Pd(Ⅱ) by CCTS was studied at different pH value. The results showed that the adsorption efficiency was above 98% after preconcentration for 20 minutes when pH values were 1-4. The effects of preconcentration time, dosage of CCTS, adsorption capacity of CCTS, sample volume, coexistent elements, and elution of Pd(Ⅱ) were investigated. The mechanism of adsorption of CCTS for Pd(Ⅱ) was discussed. A novel method for the preconcentration and separation of trace Pd(Ⅱ) with crosslinked chitosan(CCTS) and its determination in water by graphite furnace atomic absorption spectrometry has been developed. The detection limit(3σ, n=8) was 0.143 μg·L-1,the relative standard deviation(RSD) was less than 5.47%, and this preconcentration method was used to detect Pd(Ⅱ) in lake water and sea water with recoveries of 92%-96%. It also can be used to recycle Pd(Ⅱ).
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Received: 2005-12-06
Accepted: 2006-03-30
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Corresponding Authors:
XIANG Luo-jing
E-mail: roking2008@hotmail.com
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| Cite this article: |
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QIAN Sha-hua,XIANG Luo-jing,DENG Hong-bing, et al. Preconcentration of Trace Pd(Ⅱ) on Crosslinked Chitosan and Determination by Graphite Furnace Atomic Absorption Spectrometry [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(03): 592-594.
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https://www.gpxygpfx.com/EN/Y2007/V27/I03/592 |
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