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Application of coupled liquid chromatography–mass spectrometry in photolysis studies of the herbicide triflusulfuron‐methyl
Author(s) -
Chafik Nourrddine,
Mansour Mohammed,
Elamrani Btissam,
Schramm KarlWerner,
Kettrup Antonius,
Elamrani M Khalid
Publication year - 2001
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.314
Subject(s) - sulfonylurea , chemistry , photodissociation , photodegradation , mass spectrometry , chromatography , aqueous solution , tandem mass spectrometry , photochemistry , liquid chromatography–mass spectrometry , cleavage (geology) , organic chemistry , photocatalysis , medicine , insulin , endocrinology , catalysis , geotechnical engineering , fracture (geology) , engineering
Abstract The photochemical fate of the herbicide triflusulfuron‐methyl in aqueous solution under UV light (λ > 290 nm) was investigated. Nine photoproducts were detected and tentatively identified by LC/MS and LC/MS/MS analysis. The main routes of degradation involve the cleavage and/or contraction of the sulfonylurea bridge with the elimination of sulfur dioxide, which increases the acidity of the reaction medium. On the basis of the results obtained a photodegradation pathway is proposed. © 2001 Society of Chemical Industry