Determination of N-methylcarbamate pesticides in foods using an accelerated solvent extraction with a mini-column cleanup.
Residual N-methylcarbamate pesticides in food were determined by accelerated solvent extraction (ASE) and HPLC with post-column fluorescence. Pesticides were extracted with acetonitrile at 100 degrees C under 2000 psi pressure in less than 20 min. Extracts were cleaned-up with a carboxylic acid mini-column eluted with 10% or 30% acetone in hexane. Eight foods were spiked with 17 pesticides at 0.2 ppm. The average recoveries of these pesticides were 70-100% and the relative standard deviations were < 10%. These results suggested that ASE can be used to extract residues of N-methylcarbamate pesticides in foods.
Osaka Prefectural Institute of Public Health, Japan. okihasi@iph.pref.osaka.jp
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Okihashi
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Obana
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D002219:Carbamates / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid; D005506:Food Contamination / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*
D002219:Carbamates; D010573:Pesticide Residues; C020401:N-methylcarbamate