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农学学报

农学学报 ›› 2017, Vol. 7 ›› Issue (3): 80-85.doi: 10.11923/j.issn.2095-4050.cjas16080024

所属专题： 植物保护； 食用菌； 食用菌

• 农业工程 农业机械 生物技术 食品科学 • 上一篇    下一篇

气相色谱法检测平菇中9种农药残留分析

王洁莲   

  1. 山西省农产品质量安全检验检测中心
  • 收稿日期:2016-08-29 修回日期:2016-12-08 接受日期:2016-12-14 出版日期:2017-03-27 发布日期:2017-03-27
  • 通讯作者: 王洁莲 E-mail:agilent2006@163.com
  • 基金资助:
    山西省科技攻关项目“农药残留与农田鼠害防治技术研究”(20130310011-4)。

Determination of 9 Pesticide Residues in Oyster Mushroom by Gas Chromatography

  • Received:2016-08-29 Revised:2016-12-08 Accepted:2016-12-14 Online:2017-03-27 Published:2017-03-27

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摘要： 为解决食用菌中的农药残留检测问题，以基地生产的平菇样品为实验材料，采用固相萃取方法对平菇中白菌清、三唑酮等9 种农药残留的检测方法进行研究，用石墨碳黑氨基柱净化样品，利用气相色谱作为检测手段，ECD检测器进行定性定量分析。研究表明，平菇中9 种农药的含量重复性实验相对标准偏差为2.05%~6.35%，检出限为0.0003~0.005 mg/kg，定量限为.0009~0.02 mg/kg。9 种农药在0.05~2.0 mg/L范围内线性关系良好，r 值均大于0.990。此方法检测平菇中9种农药残留分析准确、可行。

关键词: 肉桂人工林, 肉桂人工林, 生物量, 模型, 密度。

Abstract: To detect pesticide residues in edible mushrooms, oyster mushroom samples were taken as the experiment material. The solid-phase extraction method was adopted to study the detection methods for 9 pesticide residues such as chlorothalonil and triadimefon in oyster mushrooms. The samples were extracted with acetonitrile, further cleaned-up by graphite carbon amino columns and detected by gas chromatography with electron capture detector (GC- ECD). The result showed that the relative standard deviations of nine pesticides content were 2.05%-6.35% under this method, the limits of detection were 0.0003-0.005 mg/kg and the limits of quantification were 0.0009-0.02 mg/kg. The nine pesticides had a good linearity from 0.05 to 2.0 mg/L and the r values were greater than 0.990. The method is feasible and accurate for determining nine residues in oyster mushroom.