A5077439745- Petroleum Processing and Analysis
- Hydrocarbon exploration and reservoir analysis
- Mass Spectrometry Techniques and Applications
- Enhanced Oil Recovery Techniques
- Catalysis and Hydrodesulfurization Studies
- Analytical chemistry methods development
- Analytical Chemistry and Chromatography
- Isotope Analysis in Ecology
- Water Treatment and Disinfection
- Thermochemical Biomass Conversion Processes
- Water Quality Monitoring and Analysis
- Marine and coastal ecosystems
- Atmospheric and Environmental Gas Dynamics
- Environmental Chemistry and Analysis
- Metabolomics and Mass Spectrometry Studies
- Toxic Organic Pollutants Impact
- Microbial Community Ecology and Physiology
- Advanced oxidation water treatment
- Atmospheric chemistry and aerosols
- Lignin and Wood Chemistry
- Coal Combustion and Slurry Processing
- Radioactive element chemistry and processing
- NMR spectroscopy and applications
- Ionic liquids properties and applications
- Arsenic contamination and mitigation
China University of Petroleum, Beijing
2016-2025
State Key Laboratory of Heavy Oil
2020
First People's Hospital of Nanning
2008
A Liaohe crude oil was separated as saturates, aromatics, resins, and asphaltenes (SARA) neutral nitrogen fractions. The its subfractions were analyzed by negative-ion electrospray ionization (ESI) Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). results show that acidic heteroatom compounds in the contain 15−55 carbon atoms with double-bond equivalent (DBE) values of 1−27, containing N1, N2, N1O1, N1O2, N1O3, N1O4, O1, O2 classes. No molecules saturate fraction can...
Electrospray ionization (ESI) coupled with Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) has been widely used for molecular characterization of dissolved organic matter (DOM). However, ESI FT-ICR MS generally poor repeatability and reproducibility because its inherent mechanism structural characteristics, which severely hindered application in quantitative analysis complex mixtures. In this article, we developed an in-house standard method DOM by MS. Instead...
Natural organic matter (NOM) can affect the performance of water treatment processes, and serves as a main precursor for formation disinfection byproduct (DBPs) during chlorination. To minimize such undesirable effects, better understanding its structural information reactivity toward chlorine is necessary. In this study, electrospray ionization coupled to Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR MS) was used study molecular composition NOM in source water....
A Chinese crude oil was distilled into multiple narrow boiling fractions. The oil, 39 distillate fractions (up to 560 °C), and atmospheric vacuum residues were analyzed using negative electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR MS). heteroatoms, N1, N2, N1O1, N1O2, O1, O2 class species, identified characterized by double-bond equivalent (DBE) values carbon numbers. composition of correlated with increased point. Most abundant O1 species had...
Venezuela crude oil was separated into saturates, aromatics, resins, and asphaltenes (SARA) fractions. The sulfur compounds in the its SARA fractions were reacted with iodomethane presence of silver tetrafluoroborate converted to methylsulfonium salts. salts characterized by positive-ion electrospray ionization (ESI) Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). S1, S2, S3, O1S1, O1S2, O2S1, N1S1 class species identified derived molecular composition distribution...
A red pine fast pyrolysis bio-oil was subjected to sequential solvent fractionation into n-hexane soluble (HS), ether (ES), insoluble (EIS), dichloromethane (DS), and methanol (MeS) fractions. The volatile components of were analyzed by gas chromatography–mass spectrometry (GC–MS), indicating the presence acids, aldehydes, ketones, alcohols, phenols, anhydromonosaccharides, which consisted methoxy, hydroxy, carbonyl functional groups. These results imply that similar most reported samples in...
Venezuela Orinoco heavy crude oil was sequentially separated into several subfractions to determine the contents and types of vanadyl porphyrins contained in products. Vanadium each subfraction were detected using an atomic absorption spectrometer (AAS) combined with characterization by ultraviolet–visible (UV–vis) spectroscopy positive-ion electrospray ionization (ESI) Fourier transform-ion cyclotron resonance mass spectrometry (FT-ICR MS). Six petroleum porphyrins, which have been...
Brominated disinfection byproducts (Br-DBPs), formed from the reaction of disinfectant(s) with natural organic matter in presence bromide raw water, are generally more cytotoxic and genotoxic than their chlorinated analogues. To date, only a few Br-DBPs drinking water have been identified, while significant portion is still unknown. In this study, negative ion electrospray ionization ultrahigh resolution Fourier transform cyclotron resonance mass spectrometry (ESI FT-ICR MS) was used to...
Natural organic matter (NOM) represents the major source of precursors for disinfection byproducts (DBPs), such as trihalomethanes (THMs) and haloacetic acids (HAAs), formed during drinking water, but molecular composition reactivity NOM remain not well understood. In this study, electrospray ionization coupled to Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) was used characterize 20 waters taken across China purpose determining THMs HAAs at level. It found that...
Six coker gas oils (CGOs) and three basic fractions extracted from one of the CGOs by 0.1, 0.4, 1 M HCl hydrochloric acid were characterized positive-ion electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR MS) compared to those analyzed chromatography (GC-MS). The ultra high resolving power accuracy MS allow assignment a unique elemental composition each peak in spectrum. Basic nitrogen species class, type, carbon number. spectra at 200−500 Da...
A novel analytical method for identifying sulfides in petroleum and its fractions was developed. Sulfides were selectively oxidized into sulfoxides using tetrabutylammonium periodate (TBAPI) identified by positive-ion electrospray ionization (ESI) Fourier transform-ion cyclotron resonance mass spectrometry (FT-ICR MS). variety of model sulfur compounds examined to evaluate the selective oxidization efficiencies petroleum. Two fractions, straight-run diesel saturates Athabasca oilsands...
Sulfur compounds in Canadian oilsands bitumen were reacted with methyl iodide the presence of silver tetrafluoroborate and converted to methylsulfonium salts. The salts characterized by positive-ion electrospray ionization (ESI) Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry (MS). Heteroatoms their class (number nitrogen, oxygen, sulfur heteroatoms), type [rings plus double bonds (DBE)], carbon number distribution. S1, S2, S3, O1S1, O1S2, O2S1, N1S1 sulfur-containing...
Molecular composition of dissolved organic matter (DOM) is a hot topic in subjects such as environmental science and geochemistry. Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) has been applied to molecular characterization DOM successfully. However, high instrument maintenance costs have constrained its wider application. A high-resolution Orbitrap spectrometer (Orbitrap can provide approximately 500,000 resolving power (at m/z 200), which potentially capable...
Heavy oil is an important resource in current petroleum exploitation, and the chemical composition information of heavy crucial for revealing its viscosity-inducing mechanism solving practical exploitation issues. In this study, techniques high-temperature gas chromatography high-resolution mass spectrometry equipped with electrospray ionization source were applied to reveal typical oils from western, central, eastern China. The results indicate that these display significant variations...
A coker heavy gas oil (CHGO) was separated into saturates, aromatics, resins, and asphaltenes (SARA) fractions. The resin fraction six subfractions by high-performance liquid chromatography (HPLC). CHGO its were characterized electrospray ionization (ESI) Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). spectra showed that the range of basic neutral nitrogen compounds 200−450 160−400 Da, respectively. Five class species, N1, N2, N1O1, N1O2, N1S1, assigned in...
A middle-temperature coal tar (MTCT) was distilled into multiple narrow boiling point fractions. The MTCT and its distillate fractions were subjected to bulk property analysis molecular compositional characterization by gas chromatography–mass spectrometry. Acid/basic liquid extraction performed separate the acidic, basic, neutral fractions, which characterized positive-ion electrospray ionization (ESI) Fourier transform ion cyclotron resonance (FT-ICR) mass dominant compounds in aromatics,...
A commercial lignite gasification-derived middle-temperature coal tar (MTCT) was subjected to acid–base extraction obtain acidic, basic, and neutral fractions. The fraction characterized by mass spectrometry (MS) for hydrocarbon-group-type analysis further fractionated extrography into six subfractions, which were gas chromatography–mass (GC–MS). Saturate, aromatic, resin fractions of the accounted 16.4, 47.6, 36.0 wt %, respectively. GC–MS showed that first subfraction (15.7 %) contained...
A Venezuela Orinoco petroleum vacuum residue (VR) was subjected to supercritical fluid extraction fractionation (SFEF) and separated into 13 extractable fractions an unextractable end-cut. Detailed molecular composition of polar heteroatom species in the SFEF subfractions were determined by electrospray ionization (ESI) Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). The also high-temperature gas chromatography (GC) for their simulated distillation analysis, gel...