title: Determination of glyphosate in biological fluids by 1H and 31P NMR spectroscopy.
abstract: Identification of glyphosate in four cases of poisoning, using nuclear magnetic resonance spectroscopy of biological fluids is reported. It has been performed by using a combination of 1H and 31P NMR analyses. Characterization of the N-(phosphonomethyl) glycine herbicide was achieved by chemical shift considerations and coupling constant patterns: CH2-(P) presents specific resonance at 3.12 ppm and appears as a doublet with a H-P characteristic coupling constant of 12.3 Hz. Moreover, resonances due to isopropylamine were present, confirming the ingestion of the considered trade formulation. After a calibration step, quantitation was performed by 1H and 31P NMR spectroscopy. The benefit and reliability of NMR investigations of biological fluids are discussed, particularly when the clinical picture is quite confusing.
authors.affiliation: Laboratoire de Biochimie et de Biologie Moléculaire, Hôpital Calmette, 59045 Lille Cedex, France.
authors.forename: B
authors.initials: B
authors.lastname: Cartigny
authors.forename: N
authors.initials: N
authors.lastname: Azaroual
authors.forename: M
authors.initials: M
authors.lastname: Imbenotte
authors.forename: D
authors.initials: D
authors.lastname: Mathieu
authors.forename: G
authors.initials: G
authors.lastname: Vermeersch
authors.forename: J P
authors.initials: JP
authors.lastname: Goullé
authors.forename: M
authors.initials: M
authors.lastname: Lhermitte
mesh_terms: D000328:Adult; D005554:Forensic Medicine / Q000379:methods*; D005750:Gastric Juice / Q000737:chemistry; D005998:Glycine / Q000031:analogs & derivatives* / Q000032:analysis* / Q000506:poisoning; D006540:Herbicides / Q000032:analysis* / Q000506:poisoning; D006801:Humans; D006859:Hydrogen; D016014:Linear Models; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008297:Male; D008875:Middle Aged; D010758:Phosphorus; D000097797:Glyphosate
chemical_list: D005998:Glycine; D006540:Herbicides; D006859:Hydrogen; D010758:Phosphorus; D000097797:Glyphosate