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Trends in Photochemistry & Photobiology   Volumes    Volume 3  Issue 2
Photodegradation of organic pollutants by complexation with transition metals (Fe3+ and Cu2+) present in natural waters
S. Andrianirinaharivelo, G. Mailhot, M. Bolte
Pages: 361 - 370
Number of pages: 10
Trends in Photochemistry & Photobiology
Volume 3  Issue 2

Copyright © 1994 Research Trends. All rights reserved

The photodegradation of aminopolycarboxylic acid (NTA, IDA) and aminopolyphosphonic acid (EDTMP) induced by complexation with iron(III) or copper(III) is described. The phenomenon generally observed is a photoredox process giving rise to the reduced metal and oxidized ligand. The quantum yields of the reaction can vary from 10-6 to 0.5 according to the ligand, the metal, the pH and the excitation wavelength. Apart from EDTMP-Cu complex, the complexation of these non absorbing compounds by iron(III) and copper(III) makes their photodegradation possible with solar light. The half lives of the pollutants when involved in such a process in the environment are estimated.
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