食品科学 ›› 2004, Vol. 25 ›› Issue (9): 162-165.

• 分析检测 • 上一篇    下一篇

酸奶中持久性有机氯污染物的残留特征及其成因分析

 张鸿, 柴之芳, 孙慧斌, 张佳莉, 欧阳宏   

  1. 中国科学院高能物理研究所核分析技术重点实验室,深圳大学理学院核技术研究所
  • 出版日期:2004-09-15 发布日期:2011-10-24

Residues and Their Source Analysis of Persistent Organochlorine Contaminants in Yogurt

 ZHANG  Hong, CHAI  Zhi-Fang, SUN  Hui-Bin, ZHANG  Jia-Li, OU Yang-Hong   

  1. 1.Key Laboratory of Nuclear Analytical Techniques,Institute of High Energy Physics,Chinese Academy ofSciences;2.Institute of Nuclear Application,Shenzhen University Sciences College
  • Online:2004-09-15 Published:2011-10-24

摘要: 采用电子捕获检测器气相色谱(GC-ECD)研究了产自中国(北京、上海、天津、广州、石家庄)、法国和西班牙20种酸奶中有机氯杀虫剂(OCPs)和多氯联苯(PCBs)的残留水平与残留特征,并对残留特征的成因进行了分析。结果显示,六六六(HCHs)和滴滴涕(DDTs)仍是酸奶中OCPs的主要来源,虽无一超标,但100%检出。其中β-HCH和p,p-DDE分别是HCHs 和DDTs的特征残留单体。同时,5CBs和6CBs对∑PCBs残留的贡献最大,PCB202、103和128是所分析目标PCBs的主要来源,而4,4- 和2,3,5- 氯取代方式是PCBs在牛奶中的特征残留形式。

关键词: 电子捕获检测器气相色谱, 酸奶, 有机氯杀虫剂, 多氯联苯

Abstract: The residues of organochlorine pesticides(OCPs)and polychlorinated biphenyls (PCBs) in 20 different yogurtspecimens of 16 brands from China(Beijing, Tianjin, Shanghai, Guangzhou, Shijiazhuang), Spain and France were determined byGas Chromatography-Electron Capture Detector (GC-ECD). The sources of the characteristic residues of HCHs, DDTs andPCBs in yogurt were explained. The results indicated that all the yogurt samples contained the residues of HCHs and DDTs, whichwere still the main contributors to OCPs in yogurt samples. The β-HCH and p,p-DDE were the characteristic residues isomerof HCHs and DDTs in yogurt, respectively. Furthermore, the main contributors of ∑PCBs were the sum of the 5CBs and6CBs, and the PCB202. Also, the 4,4- and 2,3,5- substitution patterns were the characteristic residues of PCBs in yogurt.

Key words: gas chromatography-electron capture detector (GC-ECD), yogurt, organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs)