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|Title||Analytical method for dimethenamid-P in selected raw agricultural commodities by gas chromatography with electron capture detection.|
|Publication Type||Journal Article|
|Year of Publication||2005|
|Authors||Anderson KA, Basile JL, Johnson ER|
|Journal||J AOAC Int|
|Acetanilides, Chromatography, Gas, Herbicides, Sensitivity and Specificity, Vegetables|
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.
|Alternate Journal||J AOAC Int|