摘要
建立在线凝胶渗透色谱-气相质谱分析小麦粉中50种农药残留的方法。样品经乙腈超声提取,提取液经GPC-GCMS在线净化、分离和检测,方法的加标回收率为73.06%～119.9%,相对标准偏差为0.88%～11.02%。方法的检出限为0.000 3～0.009 mg/kg,该方法样品前处理简单、快速、灵敏度高、重现性好,能够满足农药多残留检测技术的要求。
The pesticide residues were extracted with acetonitrile under ultrasonic operation, and the extract was separated and detected with the on-line GPC-GC/MS system. The recoveries of the method ranged from 73.06 to 119.9 with the relative standard deviations （RSD） from 0.88 to 11.02. The limits of detection was 0.0003 ～0.009 mg/kg. The method is simple, rapid and characterized with acceptable sensitivity and reproducibility to meet the requirements for the analysis of multiple pesticide residues in oat flour.
出处
《热带农业科学》
2012年第11期90-96,共7页
Chinese Journal of Tropical Agriculture
关键词
在线凝胶渗透色谱
气相色谱-质谱
多农药残留
小麦粉
on-line gel permeation chromatography （GPC）
gas chromatography/mass spectrometry（GC/MS）
multiple pesticide residues
oat flour
