中文摘要：

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。

英文摘要：

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.