Fluorescence decay of natural organic matter (NOM)-influence of fractionation, oxidation, and metal ion complexation

被引：24

作者：

Kumke, MU ^{[1
]}

Tiseanu, C ^{[1
]}

Abbt-Braun, G ^{[1
]}

Frimmel, FH ^{[1
]}

机构：

[1] Univ Karlsruhe, Engler Bunte Inst, Water Chem Div, D-76131 Karlsruhe, Germany

来源：

JOURNAL OF FLUORESCENCE | 1998年 / 8卷 / 04期

关键词：

natural organic matter; humic substances; time-resolved fluorescence; distribution analysis;

D O I：

10.1023/A:1020564229825

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Time-resolved fluorescence measurements of aquatic natural organic matter (NOM) derived from different origins were performed using the time-correlated. single-photon counting technique. The obtained experimental data were analyzed with nonlinear least-squares (NLLS) algorithms. The results of a global analysis with three exponential decay terms were compared with the results obtained in a distribution analysis (exponential series method; ESM). Fulvic acid fractions from a bog lake water, from a brown coal production effluent, and from a soil seepage water as well as NOM from a municipal waste water were investigated. The influence of the emission wavelength on the NOM fluorescence decay was monitored. Furthermore, the influence of fractionation using size exclusion chromatography, of ozonation, and of metal ion complexation on the fluorescence decay of the NOM samples was investigated.

引用

页码：309 / 318

页数：10

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