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Harir, M. ; Frommberger, M. ; Gáspár, A. ; Martens, D.* ; Kettrup, A. ; El Azzouzi, M.* ; Schmitt-Kopplin, P.

Characterization of imazamox degradation by-products by using liquid chromatography mass spectrometry and high-resolution Fourier transform ion cyclotron resonance mass spectrometry.

Anal. Bioanal. Chem. 389, 1459-1467 (2007)
DOI PMC
Open Access Green as soon as Postprint is submitted to ZB.
The photodecomposition of imazamox, a herbicide of the imidazolinone family, was investigated in pure water. The main photoproducts from the photolysis were followed over time by liquid chromatography mass spectrometry and structures were proposed from exact mass determinations obtained by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry. The method comprised exact mass determination with better than 0.2 ppm mass accuracy and a corresponding structural visualization taking care of respective isotopes with an adapted van Krevelen diagram that enabled a systematic approach to the characterisation of the elementary composition of each photoproduct. By taking advantage of the high resolving power of FT-ICR MS to make precise formula assignments, the derived 2D van Krevelen diagram (O/C; H/C; m/z) enabled one to structurally differentiate the formed photoproducts and to propose a degradation pathway for imazamox.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Photolysis; Imazamox; LC/MS; FT-ICR MS; Photoproducts
ISSN (print) / ISBN 1618-2642
e-ISSN 1618-2650
Quellenangaben Volume: 389, Issue: 5, Pages: 1459-1467 Article Number: , Supplement: ,
Publisher Springer
Publishing Place Heidelberg
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Institute of Ecological Chemistry (IOEC)