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Determination of two phototransformation products of bentazone using quadrupole time-of-flight mass spectrometry

AutorPeschka, Manuela; Petrovic, Mira; Knepper, Thomas P.; Barceló, Damià
Palabras claveBentazone
Structure elucidation
Quadrupole time-of-flight mass spectrometry (QqToF MS)
Fecha de publicación31-may-2007
CitaciónAnalytical and Bioanalytical Chemistry 388(5-6): 1227-1234 (2007)
ResumenThe transformation products 2-isopropylcarbamoyl) phenylsulfamic acid and 2-(1-hydroxypropane-2-yl)-1,2-dihydroindazol-3-one could be determined during the photolysis of the herbicide bentazone. Degradation experiments were carried out with different types of water in a natural sunlight simulating system. Besides the anticipated hydroxylated bentazone, the second transformation product was identified by means of exact mass measurement using ultra-performance liquid chromatography/quadrupole time-of-flight mass spectrometry (UPLC/QqToF MS). Both phototransformation products occurred in all water types tested. The required irradiation time was matrix dependent. 2-(Isopropylcarbamoyl)phenylsulfamic acid was detected in a drainage channel in the Ebro river delta (Catalonia, Spain).
Descripción8 pages, 4 figures, 1 table.-- PMID: 17541562 [PubMed].-- Printed version published Jul 2007.
Versión del editorhttp://dx.doi.org/10.1007/s00216-007-1349-1
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