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Elimination of metoxuron and carbetamide in the presence of oxygen species in aqueous solutions.
Sci. Total Environ. 123-124, 183-193 (1992)
Photodegradation of carbetamide ((R)-1-(ethylcarbamoyl)ethyl carbanilate) and metoxuron (3-(3-chloro-4-methoxyphenyl)-1,1-dimethylurea) in the presence of hydrogen peroxide, titanium dioxide and ozone was investigated with ultraviolet radiations (λ > 290 nm). Several photoproducts were isolated and identified by spectrometric methods. The results suggest that the degradation pathways of these compounds in the presence of UV-H2O2 and UV-TiO2 are hydroxylations of the aromatic ring. UV-ozonation rapidly photooxidized all pesticides. The opening of the aromatic rings was observed, producing lower molecular weight carboxylic acids. Further photooxidation converts the acids to CO2, H2O, HCl and NH3.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Schlagwörter
metoxuron; carbetamide; oxygen species; aqueous solutions; elimination
ISSN (print) / ISBN
0048-9697
e-ISSN
1879-1026
Zeitschrift
Science of the Total Environment, The
Quellenangaben
Band: 123-124,
Seiten: 183-193
Verlag
Elsevier
Nichtpatentliteratur
Publikationen
Begutachtungsstatus
Peer reviewed
Institut(e)
Institute of Ecological Chemistry (IOEC)