湖北农业科学 ›› 2020, Vol. 59 ›› Issue (15): 126-128.doi: 10.14088/j.cnki.issn0439-8114.2020.15.025

• 检测分析 • 上一篇    下一篇

气相色谱法快速测定大米中禾草敌残留量

孟庆顺, 孙丽   

  1. 淮安市食品药品检验所,江苏 淮安 223300
  • 收稿日期:2020-04-21 出版日期:2020-08-10 发布日期:2020-09-24
  • 作者简介:孟庆顺(1977-),男,江苏泗阳人,高级工程师,主要从事食品产品检验工作,(电话)13861555340(电子信箱)13094936334@163.com。

Rapid determination of molinate residues in rice by gas chromatography

MENG Qing-shun, SUN Li   

  1. Huai'an Institute for Food and Drug Control, Huai'an 223300,Jiangsu,China
  • Received:2020-04-21 Online:2020-08-10 Published:2020-09-24

摘要: 试验建立了用气相色谱法对大米中禾草敌残留量进行测定的方法,采用火焰光度检测器FPD,外标法,自动进样。结果表明,大米中禾草敌检出限2 μg/kg(进样量为1 μL,S/N=3),标准曲线的线性范围为10~100 μg/kg(r=0.999 74),样品加标回收率80.0%~97.5%,相对标准偏差RSDn=10)3.28%。该方法回收率高、重现性好、分析时间短,是一种准确快速简单的检测方法。

关键词: 气相色谱法, 大米, 禾草敌, 火焰光度检测器

Abstract: A method for the determination of herbicide residues in rice was established by gas chromatography. The method was validated by flame photometric detector FPD, external standard method and automatic injection. The results showed that the detection limit of diclofenac sodium was 2 μg/kg (injection volume was 1 μL, S/N 3), the linear range of standard curve was 10~100 μg/kg (r =0.999 74), the recovery of standard addition was 80.0%~97.5%, RSDn=10) was 3.28%. The method has the advantages of high recovery rate, good reproducibility and short analysis time. It is an accurate, fast and simple detection method.

Key words: gas chromatography, rice, molinate, flame photometric detector

中图分类号: