| 光谱学与光谱分析 |
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| Fluorescence Characterization of Oxygen Sensing Film for BOD Determination |
| LIN Ling1, XIAO Lai-long1,XIN Ling-ling1,ZHAO Li1,CHEN Xi1,２* |
1. Key Laboratory of Analytical Sciences of MOE and Department of Chemistry, Xiamen University, Xiamen 361005, China
2. State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China |
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Abstract The film doped with tris-(4,7-diphenyl-1,10-phenanthroline) ruthenium (Ⅱ) ([Ru(dpp)3]2+) as an oxygen quenching indicator exhibited a good linear relationship, fast response time, long-term stability, and enhanced sensitivity to dissolved oxygen after optimizing the sol-gel processing parameters. Fiber-optical microbial sensors for the determination of biochemical oxygen demand (BOD) were described. The sensing films consist of two layers of an oxygen-sensitive fluorescent material, and three different kinds of seawater microorganisms immobilized in poly(vinyl alcohol) sol-gel matrix. The fluorescent properties and the response behaviors of the film were investigated. The effects of temperature, pH and sodium chloride concentration on the sensing films were studied as well. For low biochemical oxygen demand, the film of sieved bacteria from seawater was superior in respect of sensitivity and is expected for further development.
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Received: 2004-10-16
Accepted: 2005-03-02
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Corresponding Authors:
CHEN Xi
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| Cite this article: |
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LIN Ling,XIAO Lai-long,XIN Ling-ling, et al. Fluorescence Characterization of Oxygen Sensing Film for BOD Determination[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(01): 15-18.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2006/V26/I01/15 |
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