| 光谱学与光谱分析 |
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| Determination of Free Chlorine with Spectrophotometric Method Using N,N-diethyl-1,4-Phenylenediamine |
| XU Xiao-jie, LIN bin, CHEN Yu-qing |
| State Key Lab of Modern Optical Instrumentation, Department of Optical Engineering，Chinese National Engineering & Technology Research Centre for Optical Instrument，Zhejiang University，Hangzhou 310027, China |
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Abstract In this paper, the absorption spectra of free chlorine in the visible region has been measured after free chlorine in the solution had reacted with N,N-diethyl-1,4-phenylenediamine(DPD). The relation between the absorption spectra and peak wavelength has been discussed. From the experiment of liquor with different concentration, the error of spectral measurement is less than 0.04%. By nonlinear data fitting, the relation between the concentration of free chlorine and the transmittivity has been given.
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Received: 2004-01-18
Accepted: 2004-04-16
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Corresponding Authors:
XU Xiao-jie
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| Cite this article: |
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XU Xiao-jie,LIN bin,CHEN Yu-qing. Determination of Free Chlorine with Spectrophotometric Method Using N,N-diethyl-1,4-Phenylenediamine [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(10): 1235-1237.
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| URL: |
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http://www.gpxygpfx.com/EN/Y2004/V24/I10/1235 |
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[2] WANG Gui-hua, TAN Bing-he(王桂华, 谭秉和). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2002，22(3)：498.
[3] ZHANG Ming-hao, XU Shu-bai(张明浩, 许树柏). Chinese Journal of Analytical Chemistry(分析化学)，1992，20(5)：591.
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