期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1219, 期 -, 页码 47-53出版社
ELSEVIER
DOI: 10.1016/j.chroma.2011.11.006
关键词
Silver(I)-mercaptopropano stationary phase; Argentation chromatography; Crude oil; Polycyclic aromatic hydrocarbons; Polycyclic aromatic sulfur heterocycles; High resolution mass spectrometry; Kendrick mass scale
Crude oils are the most complex mixtures known and every speciation method relies on a simplification of their complexity. Argentation chromatography is shown to be superior to traditional liquid chromatographic ways of separating aromatic compounds based on the number of aromatic carbon atoms. A silver(I) mercaptopropano silica gel allows an efficient group separation of polycyclic aromatic compounds to be achieved. The usefulness of this phase is demonstrated for SRM 1582 Wilmington crude oil and a diesel fuel. Furthermore, the phase can also be used for semi-preparative purposes to collect fractions for further analysis with high resolution mass spectrometry. Orbitrap mass spectra are obtained here for the polycyclic aromatic sulfur heterocycles and it is demonstrated that they can contain one to five naphtheno rings. (C) 2011 Elsevier B.V. All rights reserved.
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