Determination of oxadiargyl residues in environmental samples and rice samples.
Oxadiargyl is a commonly used herbicide in China. We developed a simple, fast, and high-throughput method employing gas chromatography with electron capture detector to determine oxadiargyl residues in food samples (rice, straws) and environmental samples (soil, water). Samples were prepared by a modified QuEChERS procedure. In this method, acetonitrile was used as the extracting solvent. The purifying step was omitted when the chromatographic conditions were optimized. Recoveries ranged from 82.9 to 112.0% for oxadiargyl in all samples, with relative standard deviation values lower than 6.2% at 0.01 mg/kg fortified concentration level.
Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310029, People's Republic of China.
Chenhui
C
Shi
Wenjun
W
Gui
Jie
J
Chen
Guonian
G
Zhu
D002138:Calibration; D002681:China; D002849:Chromatography, Gas; D004784:Environmental Monitoring; D005433:Flour / Q000032:analysis; D006540:Herbicides / Q000032:analysis*; D012275:Oryza / Q000737:chemistry*; D010069:Oxadiazoles / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D018547:Plant Stems / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis*; D014867:Water / Q000032:analysis
D006540:Herbicides; D010069:Oxadiazoles; D010573:Pesticide Residues; D012989:Soil Pollutants; D014867:Water; C547731:oxadiargyl