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Open Access Green as soon as Postprint is submitted to ZB.
Chromatography and high-resolution mass spectrometry for the characterization of the degradation products of the photodegradation of amidosulfuron: An analytical approach.
J. Agric. Food Chem. 61, 5271-5278 (2013)
Simulated sunlight irradiation causing degradation of amidosulfuron, a pyrimidinylsulfonylurea herbicide, has been investigated in aqueous solution. The main degradation products were followed up by ultrahigh-pressure liquid chromatography with a UV detector (UHPLC-UV) and identified by combining ultrahight-pressure liquid chromatography-mass spectrometry (UHPLC-MS) and Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS). On the basis of the retrosynthetic analysis, the most identified degradation products were mainly due to the losses of methylsulfamic acid (CH5NO3S), sulfocarbamic acid (CH3NO5S), carbamic acid (CH3NO2), methyl(methylsulfonyl)sulfamic acid (C2H7NO5S2), N-methylmethanesulfonamide (C2H7NO2S), and sulfonic acid (H2SO4) molecules. Accordingly, O and S-demethylation as well as hydroxylation processes were also observed. Sum formulas of the main degradation products were assigned, and a mechanical pathway is proposed.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Amidosulfuron ; Degradation Products ; Uhplc-uv ; Uhplc-ms ; Ft-icr-ms; Sulfonylurea Herbicides ; Thifensulfuron-methyl ; Pyrazosulfuron-ethyl ; Metsulfuron-methyl ; Tribenuron Methyl ; Aqueous-solutions ; Soil ; Photoproducts ; Photolysis ; Water
ISSN (print) / ISBN
0021-8561
e-ISSN
1520-5118
Quellenangaben
Volume: 61,
Issue: 22,
Pages: 5271-5278
Publisher
American Chemical Society (ACS)
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Research Unit Analytical BioGeoChemistry (BGC)