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Se pu = Chinese journal of chromatography

[Determination of oxadiazon residues in cereals by gas chromatography-mass spectrometry].


PMID 12541984

Abstract

An efficient method with microchemical method and solid phase extraction (SPE) technique for the determination of oxadiazon residues in cereals by gas chromatography-mass spectrometry (GC-MS) has been established. The oxadiazon was extracted from the sample with benzene-hexane(1:1, V/V). The extract was cleaned-up by a column of 500 mg Supelclean LC-Alumina-N. When the blank rice and corn were spiked with oxadiazon in the range of 0.005 mg/kg-5.00 mg/kg, the recoveries were 90.4%-115.7% for rice and 81.3-109.7% for corn, and with RSD of 2%-6% and 4%-9% respectively. The limit of detection was 0.005 mg/kg. The method is rapid, sensitive, accurate and suitable for the analysis of pesticide residues.

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