19F NMR as an Analytical Tool for Fluorinated Agrochemical Research

Article abstract of DOI:10.1021/jf00055a017

19F NMR was utilized to monitor the photodegradation of trifluralin directly in NMR tubes without extraction, cleanup, concentration, or chromatographic separation.Dissipation curves were generated for the parent pesticide and degradation products, and the major products identified by addition of authentic standarts were α-α-α-trifluoro-2,6-dinitro-N-propyl-p-toluidine (II), α,α,α-trifluoro-2,6-dinitro-p-toluidine (III), and 2-ethyl-7-nitro-5-(trifluoromethyl)benzimidazole (VII).Numerous peaks were observed in the spectra that may represent labile intermediates not generally observed with other analytical techniques.Keywords: 19F NMR; trifluralin; photodegradation