气相色谱-串联质谱法检测新疆地区水稻及其产地环境中咪鲜胺残留量

Determination of prochloraz residues in rice and environmental samples from Xinjiang by gas chromatography-tandem mass spectrometry

中文关键词:  水稻  咪鲜胺  气相色谱-串联质谱法  固相萃取

英文关键词:rice  prochloraz  gas chromatography-tandem mass spectrometry  solid phase extraction

中文摘要:

      目的 采用气相色谱-三重四极杆串联质谱法(gas chromatography-triple quadrupole mass spectrometry, GC-MS/MS)对新疆阿克苏地区的水稻及种植地的环境样品(水和土壤)中咪鲜胺的残留量进行检测与分析。 方法 不同样品采用相应的有机溶剂提取、固相萃取柱净化, 氮吹浓缩后上机测定。结果 不同样品的质控添加回收率在78.4%~108.1%之间, 相对标准偏差(RSD)范围在4.9%~8.3%之间, 在0.05~2.00 mg/L浓度范围内工作曲线的线性关系良好(r2>0.999)。结论 该方法的灵敏度、精密度和准确度均满足农药残留的检测分析要求, 适用于不同类型的样品中咪鲜胺残留的筛查与定性、定量分析。

英文摘要:

      Objective To detect and analyze the prochloraz residues in rice and environmental samples (water and soil) in Aksu region of Xinjiang by gas chromatography-triple quadrupole mass spectrometry (GC-MS/MS). Methods Different samples were extracted with corresponding organic solvents, purified by solid phase extraction column, concentrated by nitrogen blowing, and then determined. Results The recoveries of different samples were 78.4%–108.1%, the relative standard deviations (RSDs) were 4.9%–8.3%, and the linear relationship of the working curve was good in the concentration range of 0.05–2.00 mg/L (r2>0.999). Conclusion The sensitivity, precision and accuracy of this method meet the requirements of detection and analysis of pesticide residues, and which is suitable for screening, qualitative and quantitative analysis of prochloraz residues in different types of samples.