title: Preparation of multiwalled carbon nanotubes/hydroxyl-terminated silicone oil fiber and its application to analysis of crude oils.
abstract: A simple and efficient method to analyze the volatile and semivolatile organic compounds in crude oils has been developed based on direct immersion solid-phase microextraction coupled to comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry (DI-SPME-GC × GC/TOFMS). A novel fiber, multiwalled carbon nanotubes/hydroxyl-terminated silicone oil (MWNTs-TSO-OH), was prepared by sol-gel technology. Using standard solutions, the extraction conditions were optimized such as extraction mode, extraction temperature, extraction time, and salts effect. With the optimized conditions, a real crude oil sample was extracted and then analyzed in detail. It shows that the proposed method is very effective in simultaneously analyzing the normal and branched alkanes, cycloalkanes, aromatic hydrocarbons, and biomarkers of crude oil such as steranes and terpanes. Furthermore, the method showed good linearity (r > 0.999), precision (RSD < 8%), and detection limits ranging from 0.2 to 1.6 ng/L.
authors.affiliation: Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan 430074, China ; Faculty of Earth Resources, China University of Geosciences, 388 Lumo Road, Wuhan 430074, China.
authors.forename: Shukui
authors.identifier: 0000-0002-4563-6681
authors.initials: S
authors.lastname: Zhu
authors.affiliation: Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan 430074, China ; Faculty of Earth Resources, China University of Geosciences, 388 Lumo Road, Wuhan 430074, China.
authors.forename: Ting
authors.initials: T
authors.lastname: Tong
authors.affiliation: Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan 430074, China ; Faculty of Earth Resources, China University of Geosciences, 388 Lumo Road, Wuhan 430074, China.
authors.forename: Wanfeng
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan 430074, China ; Faculty of Earth Resources, China University of Geosciences, 388 Lumo Road, Wuhan 430074, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Dai
authors.affiliation: Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan 430074, China ; Faculty of Earth Resources, China University of Geosciences, 388 Lumo Road, Wuhan 430074, China.
authors.forename: Sheng
authors.initials: S
authors.lastname: He
authors.affiliation: Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan 430074, China ; Faculty of Earth Resources, China University of Geosciences, 388 Lumo Road, Wuhan 430074, China.
authors.forename: Zhenyang
authors.initials: Z
authors.lastname: Chang
authors.affiliation: Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan 430074, China ; Faculty of Earth Resources, China University of Geosciences, 388 Lumo Road, Wuhan 430074, China.
authors.forename: Xuanbo
authors.initials: X
authors.lastname: Gao
mesh_terms: D002623:Chemistry Techniques, Analytical / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010578:Petroleum / Q000032:analysis*; D012827:Silicone Oils / Q000737:chemistry*
chemical_list: D037742:Nanotubes, Carbon; D010578:Petroleum; D012827:Silicone Oils