Abstract
In this paper, the structure and the identity of fully 13C-substituted T-2 toxin were confirmed using high-resolution mass spectrometry, 1H-NMR, 13C-NMR, tandem mass spectrometry and HPLC–DAD. The purity of this compound was estimated to be at least 98.8% according to UV data. The isotopic distribution of (13C24) T-2 toxin indicated a total isotopic enrichment of 98.2 ± 1.0 atom% 13C, and the application of different MS measurement modes revealed the MS/MS fragmentation pattern of T-2 toxin. Furthermore, a stable isotope dilution mass spectrometry method for the quantification of T-2 toxin was developed using (13C24) T-2 toxin as internal standard. The method was evaluated with and without conventional clean-up and validated for maize and oats. Both cereals showed strong matrix enhancement effects, which could be compensated for through the application of the isotope-substituted internal standard.
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The authors thank the Christian Doppler Society and the Lower Austrian Government for the financial support.
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Häubl, G., Berthiller, F., Hametner, C. et al. Characterization of (13C24) T-2 toxin and its use as an internal standard for the quantification of T-2 toxin in cereals with HPLC–MS/MS. Anal Bioanal Chem 389, 931–940 (2007). https://doi.org/10.1007/s00216-007-1493-7
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DOI: https://doi.org/10.1007/s00216-007-1493-7