Stationary and time-resolved fluorescence for humic substances characterization
- Steady-state and time-resolved fluorescence methods were applied to investigate the fluorescence properties of humic substances of different origins. Using standard 2D emission and total luminescence spectra, fluorescence maxima, the width of the fluorescence band and a relative fluorescence quantum efficiency were determined. Different trends for fulvic acids and humic acids were observed indicating differences in the heterogeneity of the sample fractions. The complexity of the fluorescence decay of humic substances is discussed and compared to simple model compounds. The effect of oxidation of humic substances on their fluorescence properties is discussed as well.
| Author details: | Michael Uwe KumkeORCiDGND, Fritz Hartmann Frimmel |
|---|---|
| URN: | urn:nbn:de:kobv:517-opus-12353 |
| Publication series (Volume number): | Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe (paper 014) |
| Publication type: | Postprint |
| Language: | English |
| Publication year: | 2002 |
| Publishing institution: | Universität Potsdam |
| Release date: | 2007/01/26 |
| Source: | Refractory organic substances in the environment / Fritz Hartmann Frimmel et. al. - Wiley-VCH : Weinheim, 2002. - p. 215 - 231. - ISBN 978-3-527-30173-7 |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie |
| DDC classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften |
| External remark: | first published in: Refractory organic substances in the environment / Fritz Hartmann Frimmel et. al. - Wiley-VCH : Weinheim, 2002. - p. 215 - 231. - ISBN 978-3-527-30173-7 (Inhaltsverzeichnis) |
