色谱 ›› 2017, Vol. 35 ›› Issue (11): 1171-1176.DOI: 10.3724/SP.J.1123.2017.07023

• 研究论文 • 上一篇    下一篇

多管漩涡混合-气相色谱-三重四极杆质谱测定油茶籽中18种多氯联苯

沈丹玉1, 袁新跃2, 张延平1, 韩永翔1, 刘毅华1, 莫润宏1, 钟冬莲1, 汤富彬1   

  1. 1. 中国林业科学研究院亚热带林业研究所, 浙江 杭州 311400;
    2. 杭州市富阳区食品安全检验检测中心, 浙江 杭州 311400
  • 收稿日期:2017-07-31 出版日期:2017-11-08 发布日期:2014-01-17
  • 通讯作者: 汤富彬,Tel:(0571)63122616,E-mail:tfb22@163.com
  • 基金资助:

    中国林科院基本科研业务费专项资金(CAFYBB2017QA006,CAFYBB2017SZ002).

Determination of 18 polychlorinated biphenyls in camellia seeds by multiple vortex and gas chromatography-triple quadrupole mass spectrometry

SHEN Danyu1, YUAN Xinyue2, ZHANG Yanping1, HANan Yongxiang1, LIU Yihua1, MO Runhong1, ZHONG Donglian1, TANG Fubin1   

  1. 1. Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou 311400, China;
    2. Testing Center for Food Safety of Fuyang District of Hangzhou, Hangzhou 311400, China
  • Received:2017-07-31 Online:2017-11-08 Published:2014-01-17
  • Supported by:

    Fundamental Research Funds of Chinese Academy of Forestry (CAF) (Nos. CAFYBB2017QA006, CAFYBB2017SZ002).

摘要:

通过比较不同吸附剂的净化效果,建立了油茶籽中18种多氯联苯(PCBs)的气相色谱-三重四极杆质谱(GC-QQQ-MS/MS)检测方法。油茶籽样品用乙腈提取,加氯化钠盐析,离心分层后提取液加无水硫酸镁、C18、N-丙基二乙胺(PSA)和多壁碳纳米管(NANO)进行多管漩涡振荡分散固相净化,GC-QQQ-MS/MS多反应监测(MRM)模式进行检测。结果表明,油茶籽中18种多氯联苯具有良好的线性关系,检出限为5 μg/kg,平均回收率为109.2%,相对标准偏差为2.9%~6.2%(n=3)。方法应用于3个油茶主产省份油茶籽监测,48个油茶籽样品中18种多氯联苯均未检出。

关键词: 多管漩涡混合, 多氯联苯, 气相色谱-三重四极杆质谱, 油茶籽

Abstract:

A method based on the cleaning effects of different sorbents and gas chromatography-triple quadrupole mass spectrometry (GC-QQQ-MS/MS) was developed for the determination of 18 polychlorinated biphenyls (PCBs) in camellia seeds. The camellia seeds were extracted with acetonitrile, salted out with sodium chloride, then cleaned-up by QuEChERS with anhydrous MgSO4, C18, primary secondary amine (PSA), and multi walled carbon nanotubes (NANO) using multiple vortex after the centrifugal separation, and finally analyzed by GC-QQQ-MS/MS in multiple reaction monitoring mode via positive electrospray ionization. All the 18 PCBs could be completely separated with an excellent linear relationship. The limits of detection for the 18 PCBs were 5 μg/kg. For all the samples, the mean spiked recoveries was 109.2% with relative standard deviations (RSDs) of 2.9%-6.2% (n=3). The extraction, purification and analytical methods were developed and assessed. The method was successfully applied to the 48 samples from three main producing provinces of camellia seeds. All the 18 PCBs were not detected from the 48 samples.

Key words: camellia seeds, gas chromatography-triple quadrupole mass spectrometry (GC-QQQ-MS/MS), multiple vortex, polychlorinated biphenyls (PCBs)

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