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.

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Metadaten
Author:Michael U. Kumke, Fritz Hartmann Frimmel
URN:urn:nbn:de:kobv:517-opus-12353
Series (Serial Number):Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe, ISSN 1866-8372 (paper 014)
Document Type:Postprint
Language:English
Date of Publication (online):2007/01/26
Year of Completion: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
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften
Collections:Universität Potsdam / Aufsätze (Pre- und Postprints) / Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie / Physikalische Chemie
Notes extern:
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)