原油中金刚烷化合物的高效分析方法

A novel method for the determination of diamondoids in crude oils

张万峰 童婷 李东浩 代威 国朋飞 何生 朱书奎

Zhang Wanfeng Tong Ting Li Donghao Dai Wei Guo Pengfei He Sheng Zhu Shukui

中国地质大学(武汉)构造与油气资源教育部重点实验室, 武汉 430074 2. 中国地质大学(武汉)生物地质与环境地质国家重点实验室, 武汉 430074 3. 中国科学院广州地球化学研究所同位素地球化学国家重点实验室, 广州 510640 4. 延边大学长白山生物资源与功能分子教育部重点实验室, 吉林延吉 133002

Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan, Hubei 430074, China 2. State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, Hubei 430074, China 3. State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Geosciences, Guangzhou, Guangdong 510640, China 4. Key Laboratory of Nature Resource of the Changbai Mountain and Functional Molecular of Ministry of Education, Yanbian University, Yanji, Jilin 133002, China

应用一种新型高效的预处理装置——气流吹扫-注射器微萃取仪(GP-MSE),对原油样品进行预处理,并利用全二维气相色谱-飞行时间质谱对样品中金刚烷化合物进行了定性定量分析。结果表明,GP-MSE与传统柱层析法相比,具有快速、操作简便、回收率高、重现性好等优点。单金刚烷、双金刚烷的相对标准偏差分别为1.57%和2.63%,能有效对原油样品进行净化和富集;与直接进样相比,相对偏差均小于9%,相关系数均大于0.997。

A novel device, termed as gas purge microsyringe extraction (GP-MSE), has been developed and applied to the preparation of different kinds of oil samples, including condensates, light and normal oils for the first time.Oils from the Pearl River Mouth Basin were firstly extracted by GP-MSE and then qualitatively and quantitatively analyzed by comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry (GC×GC-TOFMS).The proposed method has many advantages over traditional column chromatography, such as simple and fast steps, satisfactory recoveries, and lower consumption of solvents and samples.The relative standard deviations (RSD%) of adamantane and diamantane are 1.57% and 2.63%, respectively.Crude oil samples are purified and enriched effectively. The relative deviation is less than 9%, and the correlation coefficient is over 0.997.

国家自然科学基金项目(21077039)和高等学校学科创新引智计划(B14031)资助。

https://doi.org/10.11781/sysydz201506796