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Fluoreszenzspektroskopische Untersuchungen an Huminsäuren
Author(s) -
MüllerWegener U.
Publication year - 1977
Publication title -
zeitschrift für pflanzenernährung und bodenkunde
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 0044-3263
DOI - 10.1002/jpln.19771400509
Subject(s) - fluorescence , chemistry , humic acid , humin , fluorescence spectroscopy , wavelength , chromatography , organic chemistry , materials science , optoelectronics , fertilizer , physics , quantum mechanics
Fluorescence Spectroscopic Studies on Humic Acids The procedures of the fluorescence spectra of three humic acids have been investigated and compared. Differences were found in three points:1 To get the maximum of fluorescence emission, different concentrations of the three humic acids were necessary. 2 The humic substances differed in pH‐dependence of the fluorescence. 3 With nearly equal wavelength of fluorescence emission, distinct deviations of the exciting wavelength were pointed out.The results show a connection between the conditions of the fluorescence and the contents of phenolic hydroxyl groups of the selected humic acids. The measurement of fluorescence is a relatively simple method for the characterization of humic acids.