摘要
提出了一种将全二维气相色谱与多检测器联用实现对燃料油组成研究的分析方法。在燃料油的全二维气相色谱分析中,只连接火焰离子化检测器(FID)无法获得详细组成的定性信息,而单使用质谱(MS)检测器则定量繁琐且耗时。为了结合两种检测器的优势,设计了新型的分流方案。并通过理论分析,采用辅助气程序升压的方法实现了检测器间的恒定比例分流。该方案不但实现了多检测器联用,而且还有效地防止了漏气可能给MS带来的损害。双检测器通道获得的实验结果吻合。结合适当的二维色谱柱搭配成功实现了柴油组成的研究。
A novel analysis method was presented to investigate the composition of fuels by integrating comprehensive two-dimensional gas chromatography （GC×GC） and simultaneous multi-channel detection. To apply GC×GC for fuels analysis, the flame ionization detector （FID） has no capability to identify com- ponents, whereas mass spectrometer （MS） needs complicated procedure to quantify analytes. To combine the advantages of these two detectors, this study proposed a way to split the column flow into both FID and MS. The consistent split ratio between two detectors relies on auxiliary pressure programming. In ad- dition to multi-channel detection, the method also effectively prevents MS from air leaks. The experimen- tal results from two detector channels are compatible. Together with the proper selection of column combi- nation, the composition of diesel fuel was successfully revealed.
出处
《化学世界》
CAS
CSCD
北大核心
2014年第1期10-14,共5页
Chemical World
关键词
全二维气相色谱
多检测器联用
毛细管流路技术
柴油组成
comprehensive two-dimensional gas chromatography （GC × GC）
simultaneous multi-channel detection
diesel composition capillary flow technology
