一种小规模的石凝列染色法,用于从高度成熟的原油中分离碳醇化合物
Zhongdeng Lu1, Zulin Chen2, Hongwei Ping3
1School of Earth Resources, China University of Geosciences, Wuhan, Hubei, China.
Journal of chromatography. A
|November 29, 2023
概括
一种新的小规模列色谱法有效地将低度的碳醇化合物从成熟的原油中分离出来. 这种技术增强了检测和分析,为各种油类提供了多功能解决方案.
科学领域:
- 石油地质化学 石油地质化学
- 分析化学 分析化学
背景情况:
- 碳醇化合物存在于高度成熟的原油中的低度,这对通过气色谱质谱法 (GC-MS) 进行分离和检测提出了挑战.
- 传统的分离方法可能是低效或有害的,需要开发改进的技术.
研究的目的:
- 开发和优化小型柱状染色法,以有效地从高度成熟的原油中分离碳醇.
- 调查试剂极性和注射方式对碳醇分离和回收的影响.
主要方法:
- 在巴斯图尔管管管中使用小规模的柱状染色学系统,用凝作为吸附剂.
- 使用n-hexane和二甲混合物进行化,探索了不同的溶剂极性.
- 使用GC-MS分析解分数以评估碳素度和纯度.
- 直接注射与二氧化凝吸附相比,用于卡巴索尔回收.
主要成果:
- 优化的溶剂极性 (8:2至6:4 n-hexane:dichloromethane) 实现了>98%的碳醇度.
- 在碳素醇之前对芳香碳化合物的选择性化得到了 9:1 的极性比.
- 与二氧化凝吸附相比,直接注射模式的碳素度和恢复率大约高出10%.
- 该方法在并行实验中显示出高可重现性,标准偏差<0.2%.
结论:
- 与传统技术相比,开发的小规模染色学方法提供了更高的分离效率和更低的健康风险.
- 这种多功能方法适用于高度成熟的原油,可生物降解的油,以及潜在的其他类型的油类,用于炭醇分析.
- 该技术为了解复杂地质样本中炭石的地化学意义提供了有价值的技术支持.
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