A rapid, simple and accurate method for the simultaneous determination of residues of the imidazolinone herbicides (imazapyr, imazaquin, imazamethabenz and imazamethabenz-methyl) in soil is described. The basis of the method is the formation of a supernatant by sonication of the soil with 0.1 M KCI. After removal from the soil particles, the pesticides are quantified by reversed-phase liquid chromatography-mass spectrometry with an electrospray interface (LC-ESI-MS). Recoveries from a variety of soil types, fortified over the range of 50 - 200 ppb, are essentially quantitative for each imidazolinone and the detection limits (signal-to-noise ratio = 3) of the method are always lower than 14 ng/g.
RAPID AND SIMPLE METHOD FOR EXTRACTION AND DETERMINATION OF IMIDAZOLINONE HERBICIDES IN SOIL / D'Ascenzo, Giuseppe; Gentili, Alessandra; Marchese, Stefano; Marino, Aldo; Perret, Daniela. - In: ANALUSIS. - ISSN 0365-4877. - STAMPA. - 26:7(1998), pp. 251-255. [10.1051/analusis:1998169]
RAPID AND SIMPLE METHOD FOR EXTRACTION AND DETERMINATION OF IMIDAZOLINONE HERBICIDES IN SOIL
D'ASCENZO, Giuseppe;GENTILI, Alessandra;MARCHESE, Stefano;MARINO, Aldo;PERRET, Daniela
1998
Abstract
A rapid, simple and accurate method for the simultaneous determination of residues of the imidazolinone herbicides (imazapyr, imazaquin, imazamethabenz and imazamethabenz-methyl) in soil is described. The basis of the method is the formation of a supernatant by sonication of the soil with 0.1 M KCI. After removal from the soil particles, the pesticides are quantified by reversed-phase liquid chromatography-mass spectrometry with an electrospray interface (LC-ESI-MS). Recoveries from a variety of soil types, fortified over the range of 50 - 200 ppb, are essentially quantitative for each imidazolinone and the detection limits (signal-to-noise ratio = 3) of the method are always lower than 14 ng/g.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
