An improved method for fluorescence analysis of dissolved organic matter in cave drip water

An improved synchronous fluorimetric method for the determination of dissolved organic matter in cave drip water, by adding ascorbic acid, is described. The method is based on the redox reaction between ascorbic acid and the electron-withdrawing constituents in dissolved organic matter. The results...

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Bibliographic Details
Published in:Frontiers of earth science 2014-12, Vol.8 (4), p.595-598
Main Authors: LI, Xiuli, HU, Chaoyong, LIAO, Jin, BAO, Liangliang, MAO, Qixi
Format: Article
Language:English
Subjects:
Acids
ascorbic acid
Caves
Dissolved organic matter
drip water
Earth and Environmental Science
Earth Sciences
Fluorescence
pH范围
Redox reactions
Research Article
synchronous fluorescence spectroscopy
Water
同步荧光法
抗坏血酸
有机物质
氧化还原反应
洞穴滴水
溶解性有机物
荧光分析
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Summary:An improved synchronous fluorimetric method for the determination of dissolved organic matter in cave drip water, by adding ascorbic acid, is described. The method is based on the redox reaction between ascorbic acid and the electron-withdrawing constituents in dissolved organic matter. The results show that adding ascorbic acid can quench the minor peaks, at 200-300 nm, but does not affect the intensity of the main peaks at 300-500nm. In addition, adding ascorbic acid can maintain relatively high and constant fuorescence intensity over a wide pH range （9-4）.
ISSN:2095-0195
2095-0209
DOI:10.1007/s11707-014-0439-6