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报道了利用顶空气相色谱 -电子捕获检测法测定玉米、大米、黄豆、大麦等粮食中熏蒸剂硫酰氟残留量的方法。该法回收率(硫酰氟含量为2.0×10-6时)为95.7%~101.3% ,相对标准偏差为1.4%~3.5% ,线性范围在1×10-1~1×10-7 g/L ,粮食中硫酰氟检出限低于1.0×10-8 。该法操作简单 ,分析时间短 ,可用于粮食中残留硫酰氟含量的检测
A method for the determination of sulfuryl fluoride residues in fumigants such as corn, rice, soybeans and barley by headspace gas chromatography-electron capture detection was reported. The recovery of this method was 95.7% ~ 101.3% with the relative standard deviation of 1.4% ~ 3.5% (the content of sulfuryl fluoride was 2.0 × 10-6) and the linear range was 1 × 10-1 ~ 1 × 10-7 g / L. The detection limit of sulfuryl fluoride in grain is less than 1.0 × 10-8. The method is simple in operation and short in analysis time, and can be used for the determination of residual sulfuryl fluoride content in grain