食品科学 ›› 2009, Vol. 30 ›› Issue (14): 188-190.doi: 10.7506/spkx1002-6630-200914036

• 分析检测 • 上一篇    下一篇

基质分散固相萃取—高效液相色谱法测定水果中的异菌脲残留量

吴春红,聂继云* ,李 静,李海飞,徐国锋   

  1. 中国农业科学院果树研究所
  • 收稿日期:2008-11-14 修回日期:2009-01-15 出版日期:2009-07-15 发布日期:2010-12-29
  • 通讯作者: 聂继云 E-mail:jiyunnie@163.com
  • 基金资助:

    2007 年农业行业标准制定项目(农财发[2007]40 号)

Combination of Matrix Solid Phase Dispersion Extraction with High Performance Liquid Chromatography for the Determination of Iprodione Residue in Fruits

WU Chun-hong,NIE Ji-yun*,LI Jing,LI Hai-fei,XU Guo-feng   

  1. Research Institute of Pomology, Chinese Academy of Agricultural Sciences, Xingcheng 125100, China
  • Received:2008-11-14 Revised:2009-01-15 Online:2009-07-15 Published:2010-12-29
  • Contact: NIE Ji-yun*, E-mail:jiyunnie@163.com

摘要:

以PSA(乙二胺基-N- 丙基硅烷)和ODS(十八烷基硅胶键合硅胶填料)为混合固相基质分散剂萃取净化,液相色谱柱分离,建立了水果中异菌脲残留量的测定方法。异菌脲在0.1~5.0μg/ml 的浓度范围内,峰面积和浓度的相关系数为0.9994。在香蕉、柑橘和芒果中分别添加0.5、1.0、2.0mg/kg 三个浓度异菌脲,回收率在82.70%~108.62% 之间,RSD 值在1.8%~5.3% 之间,方法的检出限为0.036mg/kg。此方法具有灵敏、准确、简便、重现性好等优点。

关键词: 分散固相萃取, 液相色谱法, 异菌脲, 水果

Abstract:

A high performance liquid chromatographic method was developed for the determination of iprodione in fruits. Samples were extracted using acetonitrile, cleaned up by solid phase extraction using PSA and ODS (1:1, m/m) as dispersants. The chromatographic seperation was achieved on an ODS reverse-phase (RP) column. There was a good linear calibration curve in the range from 0.1 to 5.0 μg/ml with the correlation coefficient of 0.9994. The recoveries for iprodione in banana, orange and mango spiked at 0.5, 1.0 and 2.0 mg/kg ranged from 82.70% to 108.62%, with the RSDs of 1.8%-5.3%. The method detection limit was 0.036 mg/kg. This method is simple, sensitive, accurate and reproducible.

Key words: matrix solid phase dispersion extraction, liquid chromatography, iprodione, fruits

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