[Determination of oxadiazon residues in cereals by gas chromatography-mass spectrometry].
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.
Li
Yong-Jun
YJ
Hunan Entry-Exit Inspection and Quarantine Bureau, Changsha 410007, China. lyjhnciq@163.com
Huang
Zhi-Qiang
ZQ
Yi
Wei-Liang
WL
D002523:Edible Grain / Q000737:chemistry*; D005506:Food Contamination / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006540:Herbicides / Q000032:analysis; D008832:Microchemistry; D010069:Oxadiazoles / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D012680:Sensitivity and Specificity; D012997:Solvents
D006540:Herbicides; D010069:Oxadiazoles; D010573:Pesticide Residues; D012997:Solvents; C012466:oxadiazon