食品科学 ›› 2007, Vol. 28 ›› Issue (6): 265-268.

• 分析检测 • 上一篇    下一篇

基质固相分散-气相色谱法测定蔬菜中的甲胺磷

 张倩, 王明林, 杜海云, 贝峰   

  1. 山东农业大学食品科学与工程学院; 山东农业大学园艺科学与工程学院; 泰安市出入境检验检疫局 山东泰安271018; 山东泰安271018; 山东泰安271000;
  • 出版日期:2007-06-15 发布日期:2011-12-31

Determination of Vegetables Methamidophos by Matrix Solid-phase Disperse and Gas Chromatography

 ZHANG  Qian, WANG  Ming-Lin, DU  Hai-Yun, BEI  Feng   

  1. 1.Department of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China; 2.College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China; 3.Taian Entry-Exit Inspection and Quarantine Bureau, Taian 271000, China
  • Online:2007-06-15 Published:2011-12-31

摘要: 建立了弗罗里硅土-石墨化炭黑的基质固相分散样品前处理法,并将该方法用于不同蔬菜中甲胺磷的残留分析,GC-NPD分析检测。对固相分散剂、样品与分散剂用量比例、洗脱溶剂及用量进行了选择和优化。结果表明,五种蔬菜中甲胺磷的回收率在85.7%~109.2%之间,相对标准偏差小于8%,可见本法可以用于各种新鲜蔬菜样品中甲胺磷的残留分析。

关键词: 基质固相分散(MSPD), 蔬菜, 甲胺磷, 气相色谱, 回收率

Abstract: A new method based on matrix solid-phase dispersion (MSPD) extraction with florisil-graphitized carbon black has been developed to determine methamidophos in various vegetables. The methamidophos was assayed by gas chromatography with nitrogen-phosphorus detector. Optimization of different parameters such as the type of solid supports for matrix dispersion, the ratio of sample, sorbent, different eluents and dosage was carried out. The results showed that the recovery range is 85.7%~109.2% with relative standard deviation lower than 8%. It proved that MSPD is a valid method to analyze methamidophos for most vegetables.

Key words: matrix solid-phase dispersion(MSPD), vegetables, methamidophos, gas chromatography, recovery