Journal Highlight: Characterization and screening of metals, metalloids and biomarkers in crude oil by ICP‐MS/OES, and GC‐MS techniques after digestion by microwave‐induced combustion

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  • Published: Feb 8, 2019
  • Author: spectroscopyNOW
  • Channels: Atomic
thumbnail image: Journal Highlight: Characterization and screening of metals, metalloids and biomarkers in crude oil by ICP‐MS/OES, and GC‐MS techniques after digestion by microwave‐induced combustion

Medium and light crude oils obtained from different sources have been analyzed by various techniques such as ICP-OES, ICP-MS (following microwave‐induced combustion in closed vessels), asphaltene analyzer, RDE-AES, X-ray fluorescence spectroscopy and FT-IR spectroscopy.

Mohammad, A.K.-T., Hameed, A.T., Alhamdany, M.A., et al. (2019). Characterization and screening of metals, metalloids and biomarkers in crude oil by ICP‐MS/OES, and GC‐MS techniques after digestion by microwave‐induced combustion. Biomedical Chromatography e4481 online

Abstract: A method for light and medium Iraqi crude oils (Basrah and Khanaken oils) digestion using microwave‐induced combustion (MIC) in closed vessels is described for the determination of (Hg, Au, Cu, Al, Ca, Co, K, Mg, Si, and Sr) and (Mo, Ti, Mn, Li, Se‐1, Rb, Ag, Ba, Pb, As, Cd, Cr, Fe, Ni, V and Zn) by inductively coupled plasma optical emission spectrometry (ICP‐OES) and inductively coupled plasma mass spectrometry (ICP‐MS), respectively. Upon using MIC it was probable to obtain lower limits of detection by ICP‐MS and also by ICP‐OES compared with those obtained by microwave‐assisted digestion (MW‐AD). The MIC was the best choice in regard to the possibility of using diluted nitric acid as absorbing solution that is an important aspect to minimize interferences encountered by ICP‐MS and ICP‐OES. The physicochemical parameters and some contaminants of crude oil samples were analyzed to classify and assess the quality of the crude oils. This study determines the viability of the use of Fourier transform infrared (FT‐IR) spectroscopy as an alternate to traditional petroleum geochemical methods for crude oil characterization. The IR fingerprints agree with the results obtained from GC‐MS analysis.

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