食品科学 ›› 2006, Vol. 27 ›› Issue (12): 319-322.

• 工艺技术 • 上一篇    下一篇

超声波提取植物性食品中六氯苯的研究

万大娟,贾晓珊,余光辉,周国华   

  1.  湖南师范大学资源与环境科学学院; 中山大学环境科学与工程学院;
  • 出版日期:2006-12-15 发布日期:2011-11-23

Ultrasonic Extraction of Hexachlorobenzene in Plant Food

WAN Da-juan,JIA Xiao-shan,YU Guang-hui,ZHOU Guo-hua   

  1. 1.College of Resource and Environment Science, Hunan Normal University, Changsha 410081, China; 2.School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
  • Online:2006-12-15 Published:2011-11-23

摘要: 采用超声波提取—气相色谱法,对植物性食品中六氯苯含量进行了定量分析。研究结果表明:在一定的超声波处理条件下,六氯苯较稳定且降解比率很小;三种不同的提取方法(索氏、振荡和超声波)相比,以超声波提取法最优;最适宜的超声波提取条件为:超声波功率20W、提取温度35℃、提取时间60min、以石油醚-丙酮混合溶剂(1:1)为提取剂;本方法的平均回收率为90.80%、变异系数2.23%、检测限0.0001μg/g,可满足植物性食品中微量有机物定量分析要求。

关键词: 超声波提取, 植物性食品, 六氯苯, 微量有机物

Abstract: Ultrasonic extraction-GC of hexachlorobenzene in plant food was studied in this paper. Results showed that the degradation rate of hexachlorobenzene in different treatments of ultrasonic extraction was very low. The best ultrasonic extraction conditions were as follows: power 20W, temperature 35℃, time 60min and the mixture of petroleum ether and acetone (1:1) as solvent. Under the best ultrasonic extraction conditions, the average recovery of hexachlorobenzene in samples was 90.80%, CV 2.23% and the detection limits 0.0001μg /g.

Key words: ultrasonic extraction, plant food, hexachlorobenzene, trace organic contamination