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- 2009 (8) (entfernen)
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Schlagworte
- 2,4-Dinitrophenylhydrazin (1)
- 2,4-Dinitrophenylhydrazine (1)
- Carbonyle (1)
- Cereals (1)
- Derivatisierung (1)
- Derivatization (1)
- Foods (1)
- ID-HPLC-MS/MS (1)
- Liquid chromatography-electrospray ionization ion-trap multistage mass spectrome (1)
- Luft (1)
- Measurement uncertainty (1)
- Mycotoxins (1)
- PET (1)
- Tenuazonic acid (1)
- Trinkwasser (1)
- Validation (1)
Eingeladener Vortrag
- nein (1)
Tenuazonic acid (TA) is a major Alternaria mycotoxin. In the present work a novel approach for the detection of TA in cereals by liquid chromatographyion-trap multistage mass spectrometry after derivatization with 2,4-dinitrophenylhydrazine is described. The product of the derivatization reaction and its major MS2 fragments were characterised by Fourier transform-ion cyclotron resonance tandem mass spectrometry. Without preconcentration, the established method features a limit of detection of 10 µg/kg using 2 g of sample in a rapid workup procedure. Accuracy, precision and linearity were evaluated in the working range of 505000 µg/kg. TA was detected in 13 and quantified in 3 out of 27 cereal samples obtained from a local supermarket, the average content being 49 µg/kg (highest incidence: 851 ± 41 µg/kg).