原油中的石油酸组分全二维气相色谱/飞行时间质谱分析

Analysis of organic acids in crude oil by comprehensive two-dimensional gas chromatography and time-of-flight mass spectrometry

马媛媛 蒋启贵 宋晓莹 钱门辉 刘鹏

Ma Yuanyuan Jiang Qigui Song Xiaoying Qian Menhui Liu Peng

中国石化 石油勘探开发研究院 无锡石油地质研究所, 江苏 无锡 214126 2. 中国石化 油气成藏重点实验室, 江苏 无锡 214126

Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214126, China 2. SINOPEC Key Laboratory of Petroleum Accumulation Mechanism, Wuxi, Jiangsu 214126, China

通过分析原油酸性组分衍生化样品，初次尝试了利用全二维气相色谱/飞行时间质谱技术（GC×GC-TOFMS）鉴定原油有机酸性化合物组成。研究结果表明：检测的原油中含有脂肪酸和环烷酸2类酸性化合物，其中脂肪酸类化合物主要由正构一元脂肪酸、类异戊二烯酸、2-乙基链烷酸和正构二元脂肪酸构成；环烷酸类化合物主要由单环长链脂肪酸、1，4-二甲氧基蒽、脱氢松香酸和甾烷酸等化合物构成。全二维气相色谱飞行时间质谱为石油酸组分的精细地球化学剖析提供了新的分析手段。

The composition of organic acids in crude oil samples was determined using comprehensive two-dimensional gas chromatography and time-of-flight mass spectrometry (GC×GC-TOFMS) for the first time by analyzing the deviations of acidic components in crude oil. Aliphatic acids (straight chain monocarboxylic acid, isoprenoid acid, 2-ethyl alkanoic acid methyl esters and straight chain dicarboxylic acid) and naphthenic acids (monocyclic long chain aliphatic acid, 1,4-dimethoxyanthracene, dehydroabietic acid and steroid acid) were detected in crude oil. GC×GC-TOFMS provides a new high resolution geochemical analysis of petroleum acid compositions.

中国石化科技开发（P11062）和中国石化石油勘探开发研究院院控项目（YK514009）资助。

https://doi.org/10.11781/sysydz201605685