%0 Journal Article %J J AOAC Int %D 2005 %T Analytical method for dimethenamid-P in selected raw agricultural commodities by gas chromatography with electron capture detection. %A Kim A Anderson %A Basile, Jennifer L %A Johnson, Eugene R %K Acetanilides %K Chromatography, Gas %K Herbicides %K Sensitivity and Specificity %K Vegetables %X

A sensitive and simple method for the extraction and quantification of the herbicide dimethenamid-P from several raw agricultural commodities (RAC) is presented. The method provides sensitive and well-defined chromatography with baseline resolution in all matrixes tested. Homogenized samples were extracted with methanol-water, filtered, and then extracted with hexanes. A Florisil solid-phase extraction was then applied for the final cleanup. Sample separation and quantification were performed by gas chromatography with an electron capture detector. The instrument detection limit was 0.007 microg/mL, and the practical quantification limit was 0.003 microg/g (w/w) based on a 25 g sample. Recoveries for a series of fortified plant tissues ranged from 69 to 103%. The study demonstrated selective and sensitive recovery of dimethenamid-P from the RAC tested.

%B J AOAC Int %V 88 %P 1428-32 %8 09/2005 %G eng %N 5 %1 http://www.ncbi.nlm.nih.gov/pubmed/16385993?dopt=Abstract