食品科学 ›› 2010, Vol. 31 ›› Issue (14): 182-185.doi: 10.7506/spkx1002-6630-201014041

• 分析检测 • 上一篇    下一篇

固相萃取- 气相色谱法检测4 种植物源食品中莠灭净的残留量

王玉健1,黄惠玲1,江林娟2,卓海华1,刘红专1   

  1. 1.海南出入境检验检疫局技术中心
    2.海南大学儋州校区食品学院
  • 收稿日期:2009-09-21 修回日期:2010-05-05 出版日期:2010-07-15 发布日期:2010-12-29
  • 通讯作者: 王玉健 E-mail:wyj_success@sohu.com
  • 基金资助:

    全国进出口食品安全检测标准化技术委员会资助项目(20073758-T-424)

Determination of Ametryn Residue in Four Plant-derived Foods by Gas Chromatography Coupled with Solid Phase Extraction

WANG Yu-jian1,HUANG Hui-ling1,JIANG Lin-juan2,ZHUO Hai-hua1,LIU Hong-zhuan1   

  1. (1. Technology Center of Hainan Entry-Exit Inspection and Quarantine Bureau, Haikou 570311, China;
    2. College of Food Science, Hainan University, Danzhou 571737, China
  • Received:2009-09-21 Revised:2010-05-05 Online:2010-07-15 Published:2010-12-29
  • Contact: WANG Yu-jian1, E-mail:wyj_success@sohu.com

摘要:

为建立植物源食品中莠灭净残留量的气相色谱检测法,样品以乙腈为提取溶剂,提取液以ENVI-Carb/NH2柱净化,乙腈- 甲苯(7:2,V/V)洗脱,以气相色谱- 火焰光度(GC-FPD,S 型滤光片)检测,外标法定量。结果表明,该方法的检出限为0.01mg/kg,实际检测大米、苹果、香蕉、茄子样品时,平均添加回收率在88.0%~100.0% 之间,相对标准偏差在3.71%~11.71% 之间。该方法灵敏度、精密度高,重复性好,回收率稳定,具有较强的适用性。

关键词: 莠灭净, 植物源食品, 残留, 气相色谱- 火焰光度检测器, S 型滤光片

Abstract:

A method using solid phrase extraction (SPE) followed by gas chromatography with flame photometric detection (GC-FPD, S-type filter) has been developed for determining ametryn residue in 4 plant-derived foods. Samples were extracted and cleaned up on an ENVI-Carb/NH2 column using acetonitrile/toluene (7:2) as elution solvent. The quantification method employed was external standard method. Under the selected analytical conditions, the detection limit was 0.01 mg/kg. Average recovery rates for the analyte in rice, apple, banana and eggplant spiked at 3 levels ranged from 88.0% to 100.0% with relative standard deviations (RSD) from 3.71% to 11.71%. This method is sensitive, precise and reproducible and has stable recovery. These figures of merit demonstrate its good applicability.

Key words: ametryn, plant-derived food, residue, GC-FPD, S-type filter

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