Journal of Environmental Science and Health, Part B: Pesticides, Food Contaminants and Agricultural Wastes 2011-01-01

Residues of pirimiphos-methyl in cereals and processed fractions following post harvest spray application.

Luigi Lucini, Gian Pietro Molinari

Index: J. Environ. Sci. Health B 46(6) , 518-24, (2011)

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Abstract

The aim of this work was to comparatively assess the persistence of pirimiphos methyl residues in cereals and in their milling fractions after spray application in post harvest. An analytical method, based on a slightly modified QuEChERS extraction followed by liquid chromatography tandem mass spectrometry (LC-MS/MS) determination was validated: mean recovery was in the range 73% to 92% depending on the spiking level, and precision as RSD ranged from 11% to 16%. The analysis of treated samples revealed that pirimiphos-methyl residues were highly persistent and that no differences could be observed between wheat, durum wheat and oat. As far as the impact of the milling process on residues is concerned, pirimiphos methyl contamination was significantly reduced during both cleaning and processing, and most of the contamination was related to outer kernel fractions.

Related Compounds

  • Pirimiphos-methyl

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