中文摘要：

采用改进的离子交换色谱、配位色谱和吸附色谱组合分离方法从焦化蜡油（CGO）中依次分离出酸性分、碱性分、中性分、芳香分和饱和分,并采用红外（FT-IR）和电喷雾-傅里叶变换离子回旋共振质谱（ESI FT-ICR MS）表征了各组分中的氮化物。采用全二维气相色谱及质谱联用仪（GC×GC-TOFMS）对芳香分的组成进行了研究。结果表明,CGO中的氮化物主要集中在酸性分、碱性分、中性分中,主要为N1类氮化物。碱性氮化物可能是带烷基侧链或环烷基侧链的吡啶类、喹啉类、吖啶类或菲啶类衍生物;非碱性氮化物主要可能是咔唑、苯并咔唑或二苯并咔唑类的衍生物。芳香分中,三环及三环以上芳烃质量分数高达68.53%,主要是苝、苯并（k）荧蒽、芘类、苯并蒽类、屈类、芴类、蒽类、菲类和苯基萘类;双环芳烃主要为萘、联苯和二氢化茚类,其质量分数和单环芳烃接近,占15%~16%。

英文摘要：

By combination method of ionexchange chromatography, coordination chromatography and adsorption chromatography, the acid fraction, basic fraction, neutral fraction and aromatic fraction were separated from coker gas oil （CGO） in turn. The acid, basic and neutral fraction were then characterized by FTIR and ESI FTICT MS, and the molecular structure of aromatics were studied by GC×GCTOFMS. The results showed that the nitrogen compounds were concentrated in the acid, basic and neutral fractions, which were mainly N1 class compounds. The basic nitrogen compounds were mainly the derivatives of pyridine, quinoline and acridine or phenanthridine with alkyl and cycloalkyl chains, while nonbasic nitrogen compounds were mainly the derivatives of carbarzole, benzocarbarzole and dibenzocarbazole. The mass fraction of tricyclic and aromatics with more than three rings in aromatics fraction of CGO was up to 6853%, including the derivatives of perylene, benzo（k）fluoranthene, pyrene, benzoanthracene, chrysene, fluorine, anthracene phenanthrene and phenylnaphthalene etc, while the two rings aromatics were mainly the naphthalene, biphenyl and indane etc, with the same mass fraction of 15%-16% as monocyclic aromatics.