Simultaneous gas-liquid chromatographic analysis of trifluralin and benfluralin residues in turfgrass thatch and soil by solid-phase extraction technique
Titel:
Simultaneous gas-liquid chromatographic analysis of trifluralin and benfluralin residues in turfgrass thatch and soil by solid-phase extraction technique
Auteur:
Krause, A. A. Niemczyk, H. D.
Verschenen in:
Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes
Paginering:
Jaargang 27 (1992) nr. 1 pagina's 39-51
Jaar:
1992-02
Inhoud:
A method is presented for either simultaneous or separate residue analysis of 2,6-dinitro-N,N-dipropyl-4-trifluoromethylaniline (trifluralin) and N-butyl-N-ethyl-2, 6-dinitro-4-trifluoromethylaniline (benfluralin) in turfgrass thatch and soil. Trifluralin and/or benfluralin residues are extracted from thatch and soil with acetohitrile-water mixture, reextracted and purified with C18 solid-phase extraction (SPE) tubes, and quantified by megabore column gas chromatography with a nitrogen specific detector. Method sensitivity for both compounds is 0.05 mg/kg for thatch and 0.02 mg/kg for soil.
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