76409-92-2Relevant articles and documents
Diuron degradation in irradiated, heterogeneous iron/oxalate systems: The rate-determining step
Mazellier, Patrick,Sulzberger, Barbara
, p. 3314 - 3320 (2001)
The purpose of this study was to examine the various factors that control the kinetics of diuron degradation in irradiated, aerated suspensions containing goethite (α-FeOOH) and oxalate, in the following denoted as heterogeneous photo-Fenton systems. In t
Degradation of diuron photoinduced by iron(III) in aqueous solution
Mazellier,Jirkovsky,Bolte
, p. 259 - 267 (2007/10/03)
The degradation of diuron photoinduced by iron(III) in aqueous solution has been investigated with different iron(III) species (monomeric species Fe(OH)2+, dimeric species Fe2(OH)2/4+ and water-soluble oligomeric species) under monochromatic excitation at 365 nm and under sunlight. The rate of degradation depends on the concentration in Fe(OH)2+, the most reactive species in terms of ·OH radical formation. The major photoproduct is 3-(3,4-dichlorophenyl)-1-formyl-1-methylurea which represents more than 60% of diuron disappearance. The mechanism only involves the attack by ·OH radicals arising from iron(III) excited species. The half-lives of diuron when submitted to such a process in the environment were estimated to be 1-2 h and a few days according to the concentration of Fe(OH)2+ (respectively 70% and 10% of total iron(III) concentration).