色谱 ›› 2018, Vol. 36 ›› Issue (4): 362-369.DOI: 10.3724/SP.J.1123.2017.07017

• 研究论文 • 上一篇    下一篇

新型包覆Pd纳米粒子液相色谱-串联质谱法用于鉴定沙特阿拉伯原油中的含氧化合物(英文)

Nagy E. MOUSTAFA1, Kout El-Kloub Fars MAHMOUD2   

  1. 1. Egyptian Petroleum Research Institute, 11727 Cairo, Egypt;
    2. Department of Chemistry, Women's College for Arts, Science and Education, Ain Shams University, 11341 Cairo, Egypt
  • 收稿日期:2017-09-27 出版日期:2018-04-08 发布日期:2014-02-26
  • 通讯作者: Nagy E. MOUSTAFA,E-mail:nemoustaf@yahoo.com

Novel caped Pd nanoparticles-liquid chromatography-tandem mass spectrometry for the identification of oxygenates in Saudi Arabian crude oil

Nagy E. MOUSTAFA1, Kout El-Kloub Fars MAHMOUD2   

  1. 1. Egyptian Petroleum Research Institute, 11727 Cairo, Egypt;
    2. Department of Chemistry, Women's College for Arts, Science and Education, Ain Shams University, 11341 Cairo, Egypt
  • Received:2017-09-27 Online:2018-04-08 Published:2014-02-26

摘要:

Saudi Arabian crude oil is a super complex mixture and, up to now, there has been little research into its heteroatom-containing compounds.First, oxygenated compounds (OCs) were isolated from Saudi Arabian oil using a Pd nanoparticle exchange complex, which formed between the nano-Pds and the oxygenated ligands.Normally, polycyclic aromatic sulphur heterocycles (S-PAHs) are separated from petroleum oil via the same method.The obtained results reveal that all the OC formulations with S-PAHs can be separated from the pre-isolated aromatic fraction of crude oil via this approach.S-PAHs are mixtures of benzothiophene and dibenzothiophene congeners.The isolated OCs are composed mainly of hydroxyl compounds.The liquid chromatography (LC)/electrospray ionization (ESI) in positive ion mode ESI (+)/tandem mass spectrometry (MS/MS) technique was used to assign the molecular weight distribution and identify the isolated OCs.The LC/ESI (+)-MS/MS technique differentiates S-PAHs and OCs using protonated ions.Thus, LC/ESI (+)-MS/MS can be used to assign molecular weight distributions for both the groups as a single mixture.MS/MS in precursor ion mode was used for the immediate identification of the target S or O analytes.

关键词: crude oil, liquid chromatography (LC), oxygenates, Pd nanoparticles, tandem mass spectrometry (MS/MS)

Abstract:

Saudi Arabian crude oil is a super complex mixture and, up to now, there has been little research into its heteroatom-containing compounds.First, oxygenated compounds (OCs) were isolated from Saudi Arabian oil using a Pd nanoparticle exchange complex, which formed between the nano-Pds and the oxygenated ligands.Normally, polycyclic aromatic sulphur heterocycles (S-PAHs) are separated from petroleum oil via the same method.The obtained results reveal that all the OC formulations with S-PAHs can be separated from the pre-isolated aromatic fraction of crude oil via this approach.S-PAHs are mixtures of benzothiophene and dibenzothiophene congeners.The isolated OCs are composed mainly of hydroxyl compounds.The liquid chromatography (LC)/electrospray ionization (ESI) in positive ion mode ESI (+)/tandem mass spectrometry (MS/MS) technique was used to assign the molecular weight distribution and identify the isolated OCs.The LC/ESI (+)-MS/MS technique differentiates S-PAHs and OCs using protonated ions.Thus, LC/ESI (+)-MS/MS can be used to assign molecular weight distributions for both the groups as a single mixture.MS/MS in precursor ion mode was used for the immediate identification of the target S or O analytes.

Key words: crude oil, liquid chromatography (LC), oxygenates, Pd nanoparticles, tandem mass spectrometry (MS/MS)

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