Residue characterization of triadimefon in grapes by gas chromatography and mass spectrometry/mass spectrometry

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Abstract
A field study of the use of the new fungicide triadimefon (Bayleton®) on grapes has indicated that residue levels of 0.01 ppm may be expected on the ripe fruit in spite of the 60–75 day interval from spray to harvest. Triadimefon and its primary metabolite triadimenol (Bayton®) have been characterized by gas chromatography and mass spectrometry to provide identification down to a detection level of 0.001 ppm. Recovery studies on these fungicides have indicated that they are completely extracted by the single multi-residue analytical methodology presently in use for monitoring fresh produce.