Method for the determination of glyphosate and (aminomethyl)phosphonic acid in soil using electron capture gas chromatography

1991 ◽  
Vol 39 (10) ◽  
pp. 1776-1780 ◽  
Author(s):  
Philip L. Eberbach ◽  
Lyle A. Douglas
Keyword(s):  
Gas Chromatography ◽  
Electron Capture ◽  
Phosphonic Acid ◽  
Aminomethyl Phosphonic Acid

scholarly journals Determination of Glyphosate and Its Metabolite, (Aminomethyl)phosphonic Acid, in River Water

1996 ◽  
Vol 79 (1) ◽  
pp. 157-162 ◽  
Author(s):  
Paul S Mogadati ◽  
Judith B Louis ◽  
Joseph D Rosen
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
River Water ◽  
Phosphonic Acid ◽  
Exchange Resin ◽  
Ion Trap ◽  
Anion Exchange Resin ◽  
Ion Trap Mass Spectrometry ◽  
Aminomethyl Phosphonic Acid

Abstract A procedure for extracting glyphosate and its meta bolite, (aminomethyl)phosphonic acid, from river water and for determining these 2 compounds by gas chromatography/ion trap mass spectrometry is described. Both compounds were extracted with Bio-Rad AG 1-X8 anion-exchange resin (formate form) prior to derivatization with a mixture of trifluoroacetic anhydride and trifluoroethanol. Limits of detection for glyphosate and its metabolite were 1 ppb even when as little as 10 mL water was analyzed. Recoveries of both compounds from river water fortified at 50 ppb were >90%.

Gas Chromatographic Determination of N-Butyl-N-ethyl-α,α,α-trifluoro-2,6-dinitro-p-toluidine and α,α,α-Trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine in Formulations

1971 ◽  
Vol 54 (3) ◽  
pp. 711-712
Author(s):  
Martha Fuzesi
Keyword(s):  
Gas Chromatography ◽  
Quantitative Determination ◽  
Electron Capture ◽  
Chromatographic Method ◽  
Chromatographic Determination ◽  
Electron Capture Detector ◽  
Reference Solution ◽  
Gas Chromatographic Method

Abstract A gas chromatographic method is described for the quantitative determination of N-butyl-N-ethyl-α,α,α-trifluoro-2,6-dinitro-p-tolindine and α,α,α-trifluoro-2,6-dinitro-N,N-dipropyI-p-toluidine herbicides in formulations. The sample is extracted with benzene, and equal amounts of sample and reference solution in the same concentration range are analyzed by gas chromatography, using an electron capture detector and an SE-30/Diatoport S column. The method has been applied successfully to laboratory-prepared and commercial samples.

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