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U.S. Department of Health and Human Services

Scientific Publications by FDA Staff

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Biomed Environ Mass Spectrom 1986 Apr;13(4):181-6

Chemical ionization mass spectrometry of dichlofluanid and its major metabolite.

Cairns T, Siegmund EG


Gas chromatographic/mass spectrometric techniques using chemical ionization have been employed to characterize the fungicide dichlofluanid and its major metabolite. The results have indicated some unusual fragmentation pathways for perhalogenmethylmercapto compounds. Use of deuterated ammonia as reagent gas has permitted a comparative assessment of protonation and exchangeable hydrogens within the major fragment ion structures. Resultant structural information has been employed to confirm residue findings in strawberries at the low part-per-million level.

Category: Journal Article
PubMed ID: #2939900 DOI: 10.1002/bms.1200130406
Includes FDA Authors from Scientific Area(s): Regulatory Affairs
Entry Created: 2012-12-16