| 光谱学与光谱分析 |
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| Determination of Chromphoric Dissolved Organic Matter in Water from Different Sources |
| LIU Xian-ping, LI Lei*, DAI Jin-feng, WANG Xiao-ru, Frank Lee S C |
| The First Institute of Oceanography of State Oceanic Administration, Qingdao 266061, China |
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Abstract Chromophoric dissolved organic matter (CDOM) represents the fraction of the dissolved organic pool which absorbs light in the visible as well as UV ranges. It could affect the color of the waters. It is necessary to study it during in research on ecosystem, remote sensing of the water color and the cycle of carbon in waters. CDOM can fluoresce when excited, so fluorescence spectrum has been used to study its origin, distribution, and change.In the present article the fluorescence spectrophotometer was used to study the relation between the fluorescence intensity, spectrum area and the concentration of CDOM. When the concentration of CDOM is low(less than 75 mg·L-1), there is a better linear relationship(r2＞0.98)between the fluorescence intensity, the spectrum area and the concentration of CDOM. Meanwhile good linear relations were found between the fluorescence intensity and spectrum area, which showed the same changeable trend of the fluorescence intensity and spectrum area with the concentration change of CDOM. A method was established to quantify the concentration of CDOM in water from different source using the linear relationship between the spectrum area and the concentration. It suits the complicated constituent analysis of CDOM and could really and accurately show the concentration of CDOM in natural water.
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Received: 2006-05-28
Accepted: 2006-10-13
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Corresponding Authors:
LI Lei
E-mail: lilei@fio.org.cn
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| Cite this article: |
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LIU Xian-ping,LI Lei,DAI Jin-feng, et al. Determination of Chromphoric Dissolved Organic Matter in Water from Different Sources[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(10): 2083-2087.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2007/V27/I10/2083 |
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