气相色谱法同时测定小麦粉中35种 有机磷农药残留量
目的 建立气相色谱-火焰光度检测器法(GC-FPD)测定小麦粉中有机磷残留量的方法。方法 小麦粉样品经过乙腈超声辅助提取后, 加入氯化钠盐析, 取上清液过膜, 利用气相色谱火焰光度检测器进行检测。结果 35种有机磷类农药在0.010~0.200 mg/L浓度范围内呈现良好线性关系, R2>0.99; 在0.200、0.100、0.040、0.020、0.010 mg/L的添加水平, 小麦粉中35种有机磷类农药平均回收率均在70.80%~115.43%之间, 各目标分析物的相对标准偏差(RSD)均小于10%。检出限是0.004~0.010 mg/kg。结论 该方法一次性可检测35种有机磷类农药, 前处理操作快速简单、效率高、重复性好且灵敏度高。
Objective To develop a method for the simultaneous determination of organic phosphorus pesticide residues in wheat flour by gas chromatography with flame photometric detector (GC-FPD). Methods Wheat flour samples were extracted with acetonitrile assisted by ultra-sonic, and the extracts were filtered by microporous membrane, then they were detected by GC-FPD. Results The method showed a good linearity in the range of 0.010~0.200 mg/L for 35 organophosphorus pesticides with R2>0.99. The recoveries were 70.80%~115.43% at 3 spiked levels of 0.200, 0.100, 0.040, 0.020, and 0.010 mg/L for 35 organophosphorus pesticide, and the relative standard deviations (RSDs) were less than 10%. The limits of detections were in the range of 0.004~0.010 mg/kg. Conclusion This method is suitable for fast, simple, and high sensitive detection of 35 organophosphorus pesticide residues simultaneously.
标题：气相色谱法同时测定小麦粉中35种 有机磷农药残留量
英文标题：Simultaneous determination of 35 organophosphorus pesticide residues in wheat flour by gas chromatography
作者：
高丁 中粮营养健康研究院,北京市营养健康与食品安全重点实验室
陈士恒 中粮营养健康研究院,北京市营养健康与食品安全重点实验室
章晴 中粮营养健康研究院,北京市营养健康与食品安全重点实验室
杨永坛 中粮营养健康研究院,北京市营养健康与食品安全重点实验室
中文关键词:有机磷农药,气相色谱法,小麦粉,
英文关键词:organophosphorus pesticides,gas chromatography,wheat flour,
发表日期：2015-03-24
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