论文成果
Origin of polar organic sulfur compounds in immature crude oils revealed by ESI FT-ICR MS
摘要:Organic sulfur compounds (OSCs) are abundant in immature crude oils, including "polar" OSCs that are defined here as compounds containing one or more heteroatom(s) in addition to sulfur atoms having sufficient polarity to be analyzable by electrospray ionization (ESI) without derivatization. An understanding of the origins of polar OSCs in crude oils has been hampered by limitations in their analytical characterization. In this paper, we employed a high field (9.4 T) Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) coupled with ESI to study the sulfur-rich immature crude oils from the Jianghan Basin in China. The results show that the polar OSCs usually have non-sulfur counterparts, i.e., heteroatom-containing compounds without sulfur, with similar carbon number ranges, but slightly lower DBE (double bond equivalence) distributions. The similar or even identical carbon number distributions of the polar OSCs and their non-sulfur counterparts indicate their inheritance from the same precursors. The sulfur rings in polar OSCs are formed by intramolecular sulfurization that leads to the increases in DBEs compared to their non-sulfur counterparts. The results also indicate that the number of sulfur rings that can be formed in polar OSCs is largely controlled by the number of available reactive functional groups in their precursors. This paper extends our knowledge of intramolecular sulfurization during early diagenesis, especially for polar heteroatom-containing compounds. (C) 2018 Elsevier Ltd. All rights reserved.
关键字:Polar organic sulfur compounds Sulfurization ESI FT-ICR MS Carotenoids
ISSN号:0146-6380
卷、期、页:卷: 121 页: 36-47
发表日期:2018-07-01
期刊分区(SCI为中科院分区):二区
收录情况:SCI(科学引文索引印刷版),ESI(基本科学指标数据库),EI(工程索引),SCIE(科学引文索引网络版)
发表期刊名称:Organic Geochemistry
参与作者:刘为民,廖玉宏,许强,蒋彬,彭平安
第一作者:史权
论文类型:期刊论文
论文概要:刘为民,廖玉宏,史权,许强,蒋彬,彭平安,Origin of polar organic sulfur compounds in immature crude oils revealed by ESI FT-ICR MS,Organic Geochemistry,2018,卷: 121 页: 36-47
论文题目:Origin of polar organic sulfur compounds in immature crude oils revealed by ESI FT-ICR MS