Volume 5
Issue 2
Environmental Development
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Available Online: http://www.ejpau.media.pl/volume5/issue2/environment/abs-05.html
SPECTROSCOPIC STUDIES ON UVC-INDUCED PHOTODEGRADATION OF HUMIC ACIDS
Danuta Sławińska, Krzysztof Polewski, Piotr Rolewski, Patryk Pluciński, Janusz Sławiński
ABSTRACT
The effect of UV radiation on absorption, fluorescence spectra and dynamics of phototransformation of five different humic acids (HA) of natural and synthetic origin were investigated. Two types of synthetic HA were prepared: one containing only C, H and O atoms, and another with content of C, H, O and N atoms. Natural HA were also diversified with respect to their origin. We used UV-C radiation (predominantly the wavelength of 254 nm) to provide a wide spectrum of photochemical mechanisms.
Key words: humic acids, fluorescence and absorption spectra, UV-C radiation, photodegradation.