色谱

色谱 ›› 2011, Vol. 29 ›› Issue (02): 141-145.DOI: 10.3724/SP.J.1123.2011.00141

• 研究论文 • 上一篇    下一篇

气相色谱-表面电离检测器分析汽油中含氮化合物的分布

李伟伟1,2, 丁坤1,2, 王华1, 陈士恒1,2, 沈铮1, 关亚风1*   

  1. 1. 中国科学院大连化学物理研究所仪器分析化学室　中国科学院分离分析化学重点实验室, 辽宁 大连 116023; 2. 中国科学院研究生院, 北京 100039
  • 收稿日期:2010-11-10 修回日期:2010-12-28 出版日期:2011-02-28 发布日期:2007-03-25
  • 通讯作者: 关亚风,博士生导师,研究员,主要研究方向为微型分离分析.
  • 基金资助:

    国家自然科学基金科学仪器专项基金项目(No. 20627006)和科技部资源环境“863”课题(No. 2007AA06Z419).

Determination of nitrogen compounds in gasoline by gas chromatography-surface ionization detector

LI Weiwei1,2, DING Kun1,2, WANG Hua1, CHEN Shiheng1,2, SHEN Zheng1, GUAN Yafeng1*   

  1. 1. Department of Instrumentation and Analytical Chemistry, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; 2. Graduate University of Chinese Academy of Sciences, Beijing 100039, China
  • Received:2010-11-10 Revised:2010-12-28 Online:2011-02-28 Published:2007-03-25

PDF

474

被引次数

6

摘要： 采用液液萃取的方法分别从90#、93#、97#汽油中提取了含氮化合物,并将气相色谱(GC)和作者所在研究组研制的表面电离检测器(SID)联用对含氮化合物进行了分析。结合GC-氢火焰离子化检测器(FID)、GC-氮磷检测器(NPD)和GC-质谱(MS)的分析结果,可鉴定出GC-SID谱图中的峰基本为含氮化合物,且大部分为NPD和FID未检出的峰,说明SID的选择性和灵敏度更好。分析结果表明,这3种汽油含氮化合物种类相似,含量有所差异；所提取的含氮化合物主要是苯胺类化合物；SID能从汽油样品中检出多种痕量的高沸点含氮组分,对于检测含氮组分而言,SID具有优于商品NPD的灵敏度和选择性。SID为GC分析提供了一种性能优异的选择性检测器。

关键词: 分布, 含氮化合物, 气相色谱-表面电离检测器, 汽油

Abstract: Nitrogen compounds in gasoline were extracted by liquid-liquid extraction and analyzed by gas chromatography-surface ionization detector (GC-SID). Compared with the chromatograms obtained from GC-flame ionization detector (FID), GC-thermal ionization detector (NPD) and GC-mass spectrometry (MS), the peaks in the chromatogram obtained by GC-SID were assigned to the nitrogen compounds in gasoline. Most of these nitrogen compounds could not be detected by FID or NPD, which demonstrated the high selectivity and sensitivity of the SID. The types of nitrogen compounds in three gasoline samples (90#、93#、97#) were similar, but their contents varied with different gasoline brands. The extracted nitrogen compounds were mainly anilines, the amounts of which in the three gasoline samples were different. Trace amounts of several high boiling point nitrogen compounds were successfully detected because of the high sensitivity of SID. The SID is superior to the commercial NPD in detecting the nitrogen compounds in gasoline samples. In view of its high sensitivity and selectivity, the SID is a promising GC detector.

Key words: distribution, gas chromatography-surface ionization detector (GC-SID), gasoline, nitrogen compounds