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

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Abstract

The 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).

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Acknowledgement

This research project was funded by the European Union under the Global Change and Ecosystems (FP6) Water Cycle and Soil Related Aspects (AQUATERRA, Project number 505428 GOCE). This work reflects only authors’ views and the European Community is not liable for any use that may be made of the information contained. Financial support from the Spanish Ministry of Education and Science (Project number CTM2005-25168-E) is also acknowledged.

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Authors and Affiliations

  1. Europa University of Applied Sciences, Limburger Straße 2, 65510, Idstein, Germany

    Manuela Peschka & Thomas P. Knepper

  2. Centre de Investigació i Desenvolupament (CSIC), c/Jordi Girona 18-24, 08034, Barcelona, Spain

    Mira Petrovic & Damià Barceló

Authors
  1. Manuela Peschka
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  2. Mira Petrovic
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  3. Thomas P. Knepper
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  4. Damià Barceló
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Correspondence to Damià Barceló.

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Peschka, M., Petrovic, M., Knepper, T.P. et al. Determination of two phototransformation products of bentazone using quadrupole time-of-flight mass spectrometry. Anal Bioanal Chem 388, 1227–1234 (2007). https://doi.org/10.1007/s00216-007-1349-1

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  • DOI: https://doi.org/10.1007/s00216-007-1349-1

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