食品科学 ›› 2010, Vol. 31 ›› Issue (4): 175-178.doi: 10.7506/spkx1002-6300-201004039

• 分析检测 • 上一篇    下一篇

液相色谱- 串联质谱法测定八种食品中甲霜灵

徐 娟,陈 捷,林 峰,王 岚,邵琳智,吴映璇,焦 红   

  1. 广东检验检疫技术中心
  • 收稿日期:2009-03-31 修回日期:2009-08-30 出版日期:2010-02-15 发布日期:2010-12-29
  • 通讯作者: 徐娟 E-mail:coolspring@126.com
  • 基金资助:

    广东省科技厅“应对‘日本肯定列表’关键技术研究和应用”项目(2006Z1-E0121)

Liquid Chromatography-Tandem Mass Spectrometric Determination of Metalaxyl Residue in Animal-derived and Plant-derived Foods

XU Juan,CHEN Jie,LIN Feng,WANG Lan,SHAO Lin-zhi,WU Ying-xuan,JIAO Hong   

  1. Guangdong Inspection and Quarantine Technology Center, Guangzhou 510623, China
  • Received:2009-03-31 Revised:2009-08-30 Online:2010-02-15 Published:2010-12-29
  • Contact: XU Juan E-mail:coolspring@126.com

摘要:

为研究建立动物源性食品(鸽肉、鸭肾)、植物源性食品(蔬菜汁、苹果、橙子、葡萄、柠檬、奇异果)中农药甲霜灵残留的液相色谱- 串联质谱测定方法。采用外标法(添加水平分别为0.005、0.010、0.020mg/kg)测定回收率,其中:动物源性食品中平均回收率为95.9%~102.0%,相对标准偏差为2.13%~12.7%(n=5),方法检出限为0.002mg/kg;植物源性食品中平均回收率为116.4%~141.0%,相对标准偏差为0.37%~4.09%(n=5),方法检出限为0.001mg/kg。该方法的测定结果满足农残检测要求。

关键词: 甲霜灵, 液相色谱- 串联质谱, 食品, 农药残留

Abstract:

An analytical method using liquid chromatography-tandem mass spectrometry (LC-MS/MS) was presented for the determination of metalaxyl residue in 2 animal-derived foods, namely pigeon meat and duck kidney and 6 plant-derived foods, namely multiple vegetable juice, apple, sweet orange, grape, lemon and kiwifruit. The analyte was quantified by the external standard method. Mean spike recoveries of metalaxyl ranged from 95.9% to 102.0% for animal-derived foods (represented by duck kidney), and 116.4% and 141.0% for plant-derived foods (represented by sweet orange), with relative standard deviations ranging from 2.13% to 12.7% for duck kidney and from 0.37% to 4.09% for sweet orange. The limits of detection of the method for duck kidney and apple were 0.002 mg/kg and 0.001 mg/kg, respectively.

Key words: metalaxyl, liquid chromatography-tandem mass spectrometry (LC-MS/MS), food, pesticide residue

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