气相色谱法测定水果中氟虫腈农药残留
目的 建立气相色谱法检测水果中氟虫腈农药残留的方法。方法 样品提取液分别经N-丙基乙二胺净化柱、弗洛里硅土柱、QuEChERS净化管提取净化后, 采用外标法进行定量检测。结果 方法在0.01~0.2 μg/mL浓度范围内, 线性良好。在3个添加水平下, 经QuEChERS柱提取净化后的回收率为89.0%~104.0%, 较其他2种净化柱净化的回收率高。相对标准偏差为2.58%~4.08%(n=6), 氟虫腈的最低检出限为0.001 mg/kg, 定量限为0.003 mg/kg。结论 该方法准确、简单、重现性好, 能够用于水果中氟虫腈残留量的检测。
Objective To establish the method for determination of fipronil residues in fruit by gas chromatography (GC). Methods Samples were extracted and cleaned by PSA, Florisil-SPE, and QuEChERS, then tested with external standard method. Results This method showed a good linear relationship in the range of 0.01~0.2 μg/mL. The recovery rates of fipronil were ranged from 89.0% to 104.0% at spiked levels of 0.002~0.04 mg/kg, and the relative standard deviations were from 2.58% to 4.08% (n=6). The limit of detection of fipronil was 0.001 mg/kg and the limit of quantification was 0.003 mg/kg. Conclusion This method is accurate, simple and reproducible, which can be used in the determination of fipronil residues in fruit.
标题：气相色谱法测定水果中氟虫腈农药残留
英文标题：Determination of fipronil residues in fruit by gas chromatography
作者：
赵丽 昆明市疾病预防控制中心
洪雪花 昆明市疾病预防控制中心
荣国琼 昆明市疾病预防控制中心
董玉英 昆明市疾病预防控制中心
师真 昆明市疾病预防控制中心
中文关键词:水果,氟虫腈,气相色谱法,
英文关键词:fruit,fipronil,gas chromatography,
发表日期：2017-05-18
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