title: Detection of trace levels of triclopyr using capillary gas chromatography-electron-capture negative-ion chemical ionization mass spectrometry.
abstract: Triclopyr, after esterification, is shown to be a suitable candidate for detection by gas chromatography-electron-capture negative-ion chemical ionization mass spectrometry forming a characteristic carboxylate anion which offers a high detection sensitivity. A detection limit of 70 fg reaching the ionizer is indicated. Low backgrounds and an absence of chemical interferences are shown for vegetation extracts, using a simple method of extraction and derivatisation. A similar behaviour is demonstrated for 2,4-D and 2,4,5-T.
authors: Chemistry and Materials Engineering Division, Admiralty Research Establishment, Poole, U.K.
authors: P
authors: P
authors: Begley
authors: B E
authors: BE
authors: Foulger
mesh_terms: D015085:2,4,5-Trichlorophenoxyacetic Acid / Q000032:analysis; D015084:2,4-Dichlorophenoxyacetic Acid / Q000032:analysis; D002849:Chromatography, Gas; D004563:Electrochemistry; D008401:Gas Chromatography-Mass Spectrometry; D006016:Glycolates / Q000032:analysis*; D006540:Herbicides / Q000032:analysis*; D010944:Plants / Q000032:analysis
chemical_list: D006016:Glycolates; D006540:Herbicides; D015084:2,4-Dichlorophenoxyacetic Acid; D015085:2,4,5-Trichlorophenoxyacetic Acid; C032742:triclopyr