【作者】 张亚和； 史权； 何俊辉； 胡伟峰； 朱雷；

【Author】 ZHANG Ya-he,SHI Quan,HE Jun-hui,HU Wei-feng,ZHU Lei (State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102200,China)

【机构】 中国石油大学(北京)重质油国家重点实验室；

【摘要】 <正>咔唑类含氮化合物是原油中非烃类化合物的主要组成部分,可作为油气运移、油气成熟度和油源对比的有效指标。而原油中含氮化合物的含量一般为0.05%～0.5%,需分离富集后进行气相色谱-质谱(GC-MS)分析。目前,在油藏地球化学研究中普遍采用两步分离法,但该法没有考虑样品的收率,定量方法不够完善,缺乏质量保证,不符合定量分析的基本要求;对不同收率条件下含氮化合物的地化参数是否一致,也缺乏考察数据,而且该法复杂费时、样品用量大、分离成本高。尤其在地球化学研究中,通常需要对样品做大批量分析,因此亟需一种定量可靠的快速分离方法。更多还原

【Abstract】 A SPE/GG-MS method for separation and determination of carbazoles in crude oil was developed. Alumina and silicic acid solid-phase extraction(SPE) columns were used to separate resin from crude oil and neutral nitrogen compounds from nitrogen riched resin.Carbazole and its alkylation series were quantitatively analysed by use of deuterate carbazole as an internal standard and the 9-benzocarbazole as an recovery rate standard.The modified method was very suitable for batch processing in organic geochemistry owing to its low cost,time saving,environmental friendliness.更多还原