摘要
研究了高效液相色谱－气相色谱（ＨＰＬＣ－ＧＣ）联用技术及其应用。采用正相微柱ＨＰＬＣ－ＧＣ联用及完全溶剂蒸发方式，分析了煤焦油馏分──蒽油，显示了微柱ＨＰＬＣ－ＧＣ联用的应用潜力。采用正相ＨＰＬＣ－ＧＣ联用结合反冲技术，分离了重质石油中的饱和烃、芳烃和极性化合物（含氮化合物等）。
The new technique of on-line coupling of HPLC to GC has been developed in recent decade. In this paper the technique of on-line coupled HPLC-GC and its applications were investigated. First,the normal paraffin standard sample was separated by coupled normal microbore HPLC-GC using concurrent eluent evaporation method with a retention gap of 4m. Then a complex fraction of coal tar anthracene oil was analysed under the same condition, which showed the application potentialities of this multidimensional chromatographic system when separating complex material. Finally, the saturated paraffins, polycyclic aromatic hydrocarbons and polar compounds(including nitrogen-containing compounds) in a heavy oil distillate (bp. 335-500℃ ) were successfully separated by a system of on-line coupled normal cyano-HPLC-GC combined with column backflush technique.Being compared with conventional procedure which involves the very laborious pre-treatment process,this method has advantages of reducing lose of sample material during preparation,significant short analysis time and ease of automation and suits for analysis of the morphology and distribution of nitrogen-containing compounds in heavy oil.
出处
《色谱》
CAS
CSCD
北大核心
1996年第1期10-13,共4页
Chinese Journal of Chromatography
基金
国家自然科学
关键词
气相色谱
重质石油
含氮化合物
蒽油
煤焦油
on-line coupled high performance liquid chromatography/gas chromatography,heavy oil,nitrogencontaining compounds,anthracene oil,coal tar
