QuEChERS-气相色谱法测定牛奶中24 种有机氯及菊酯类农药残留

doi:10.7506/spkx1002-6630-201618023

食品科学

QuEChERS-气相色谱法测定牛奶中24 种有机氯及菊酯类农药残留

邓小娟1，李文斌2，晋立川2，顾春燕2，陈小平1,*

1.天津大学分析中心，天津 300072；2.迪马科技有限公司，天津 300402

出版日期:2016-09-25 发布日期:2016-09-26
通讯作者: 陈小平
基金资助:
国家自然科学基金青年科学基金项目（201506147）

Determination of 24 Organochlorine and Pyrethroid Pesticide Residues in Milk by Modified QuEChERS Method and Gas Chromatography

DENG Xiaojuan1, LI Wenbin2, JIN Lichuan2, GU Chunyan2, CHEN Xiaoping1,*

1. Analysis Center, Tianjin University, Tianjin 300072, China; 2. Dikma Technologies Inc., Tianjin 300402, China

Online:2016-09-25 Published:2016-09-26
Contact: CHEN Xiaoping

摘要/Abstract

摘要：

建立QuEChERS快速净化结合气相色谱法测定牛奶中24 种有机氯及菊酯类农药残留的分析方法。样品经乙腈提取，QuEChERS法净化，气相色谱-电子捕获检测器分析，外标法定量。结果表明，待测物质在5～250 μg/L范围内线性关系良好，相关系数大于0.99，检出限为0.06～0.30 μg/kg，样品加标平均回收率为85.5%～111.2%，相对标准偏差为3.2%～10.8%。该方法简单、准确、高效，可用于牛奶样品中有机氯及菊酯类农药残留的快速筛查和定量检测。

关键词: QuEChERS, 气相色谱, 有机氯, 菊酯类农药, 牛奶

Abstract:

In this study, a modified quick, easy, cheap, effective, rugged and safe (QuEChERS ) approach was applied for
the determination of 24 organochlorine pesticide and pyrethroid residues in milk samples by gas chromatography-electron
capture detector (GC-ECD). Milk samples were extracted with acetonitrile, purified with the modified QuEChERS approach,
and detected by GC-ECD. The external standard method was used for quantification. Excellent linearities were achieved for
all target analytes in the range of 5–250 μg/L with correlation coefficients greater than 0.99. The limits of detection (LODs)
ranged from 0.06 to 0.30 μg/kg. The recoveries were in the range of 85.5%–111.2%, with relative standard deviations (RSDs)
less than 11%. In summary, the proposed method was simple, accurate, efficient and adequate for the rapid screening and
quantitative analysis of organochlorine pesticide and pyrethroid residues in milk.

Key words: QuEChERS (quick, easy, cheap, effective, rugged and safe), gas chromatography, organochlorine, pyrethroid pesticide, milk

中图分类号:

O657

邓小娟，李文斌，晋立川，顾春燕，陈小平. QuEChERS-气相色谱法测定牛奶中24 种有机氯及菊酯类农药残留[J]. 食品科学, doi: 10.7506/spkx1002-6630-201618023.

DENG Xiaojuan, LI Wenbin, JIN Lichuan, GU Chunyan, CHEN Xiaoping. Determination of 24 Organochlorine and Pyrethroid Pesticide Residues in Milk by Modified QuEChERS Method and Gas Chromatography[J]. FOOD SCIENCE, doi: 10.7506/spkx1002-6630-201618023.

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QuEChERS-气相色谱法测定牛奶中24 种有机氯及菊酯类农药残留

Determination of 24 Organochlorine and Pyrethroid Pesticide Residues in Milk by Modified QuEChERS Method and Gas Chromatography

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