DOI: 10.1016/j.marpolbul.2017.04.003
Scopus记录号: 2-s2.0-85017410752
论文题名: Effects of short-term weathering on the stable carbon isotope compositions of crude oils and fuel oils
作者: Liu Y. ; Xu J. ; Chen W. ; Li Y.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2017
卷: 119, 期: 1 起始页码: 238
结束页码: 244
语种: 英语
英文关键词: Diagnostic ratios
; n-Alkanes
; Oil spills
; Short-term weathering
; Stable carbon isotope
Scopus关键词: Chromatography
; Gas chromatography
; Gas oils
; Isotopes
; Mass spectrometry
; Oil spills
; Paraffins
; Principal component analysis
; Spectrometry
; Weathering
; Carbon isotope discrimination
; Diagnostic ratios
; Fingerprint identification
; Gas chromatography-mass spectrometry
; n-Alkanes
; Short term
; Stable carbon isotope compositions
; Stable carbon isotopes
; Fuel oils
; carbon 14
; fuel oil
; petroleum
; carbon
; petroleum
; alkane
; carbon isotope
; crude oil
; fuel
; identification method
; isotopic analysis
; isotopic composition
; isotopic ratio
; stable isotope
; weathering
; Article
; chemical composition
; controlled study
; isotope analysis
; mass fragmentography
; molecular stability
; simulation
; weathering
; analysis
; oil spill
; Carbon
; Carbon Isotopes
; Fuel Oils
; Gas Chromatography-Mass Spectrometry
; Petroleum
; Petroleum Pollution
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: A short-term simulated weathering experiment was performed on two crude oils and two heavy fuel oils under natural conditions to evaluate the effects of natural weathering processes by using gas chromatography–mass spectrometry combined with gas chromatography–isotopic ratio mass spectrometry. The results of diagnostic ratios of n-alkanes show that only odd to even predominance (OEP1, OPE2) and carbon preference index (CPI) remain stabilized during the 28 d weathering process, but they cannot effectively distinguish the four types of oils. Statistical analyses based on paired sample t-test and principal component analysis (PCA) revealed that stable carbon isotope compositions of n-alkanes in the four studied oils have no significant changes over the weathering time, and that the carbon isotope discrimination (Δδ13C) of n-alkanes is < 3‰. We have provided evidence that the stable carbon isotope compositions of n-alkanes compared to n-alkanes diagnostic ratios significantly improve the efficiency and fidelity of the oil fingerprint identification. © 2017 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/87576
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: College of Environmental Science and Engineering, Dalian Maritime University, Dalian, China; College of Environmental Science and Engineering, Maritime Safety Administration of the People's Republic of China, Beijing, China; College of Navigation, Dalian Maritime University, Dalian, China
Recommended Citation:
Liu Y.,Xu J.,Chen W.,et al. Effects of short-term weathering on the stable carbon isotope compositions of crude oils and fuel oils[J]. Marine Pollution Bulletin,2017-01-01,119(1)