A Simple Procedure for Determination of Aminocyclopyrachlor and Aminopyralid in Soil, Corn Meal, and Soy Meal using Liquid Chromatography/Tandem Mass Spectrometry

Nicholas J. Baumhover, David Larabee-Zierath, John D. Vargo, David R. Spak, Derek Netzband, Susie Y. Dai

Abstract


An analytical method has been developed that efficiently extracts aminocyclopyrachlor and aminopyralid from a variety of matrices including soil, soy meal, and corn meal without the need of time-consuming matrix cleanup steps such as solid phase extraction. Following extraction, the samples are analyzed by positive mode LC-ESI-MS/MS. Spiking studies were conducted at low- and intermediate-concentrations to determine the method detection limit as well as to evaluate the accuracy and precision of the method. Generally, aminocyclopyrachlor and aminopyralid recoveries were acceptable following extraction from soil, soy meal, and corn meal.


Keywords


pesticide, aminocyclopyrachlor, aminopyralid, mass spectrometry, FIFRA, EPA

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References


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