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[目的]建立了一种固相萃取-气相色谱法测定粮谷中敌瘟磷残留量的方法。[方法]用85%乙腈水溶液提取试样,多功能固相萃取柱净化,磷滤光片检测器(FPD)测定。[结果]方法线性范围为0.01~1.0 mg/L(r为0.99986),检出限为0.01 mg/kg,加标回收率为85.14%~100.44%,相对标准偏差为3.58%~8.82%。[结论]该方法快速、灵敏、准确,适合粮谷中敌瘟磷残留量的定性和定量测定。
[Objective] The research aimed to establish a method of solid phase extraction and gas chromatography for the determination of paravopyrazol residue in grain. [Method] The sample was extracted with 85% acetonitrile aqueous solution, cleaned up by multi - function solid - phase extraction column, and measured by the phosphor filter detector (FPD). [Result] The linear range of the method was 0.01-1.0 mg / L (r = 0.99986). The detection limit was 0.01 mg / kg. The recoveries were 85.14% -100.44%. The relative standard deviations were 3.58% -8.82%. [Conclusion] The method was rapid, sensitive and accurate and suitable for the qualitative and quantitative determination of Residual Phosphorus in grain.