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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
Author(s) -
Mohammad Abdul KarimTalaq,
Hameed Abdullah Thamer,
Alhamdany Mohammed Affan,
Mohammad Al Azzam Khaldun,
Talk Gaidaa Abd Alkareem
Publication year - 2019
Publication title -
biomedical chromatography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 65
eISSN - 1099-0801
pISSN - 0269-3879
DOI - 10.1002/bmc.4481
Subject(s) - chemistry , microwave digestion , inductively coupled plasma mass spectrometry , inductively coupled plasma atomic emission spectroscopy , inductively coupled plasma , nitric acid , detection limit , chromatography , mass spectrometry , analytical chemistry (journal) , inorganic chemistry , plasma , physics , quantum mechanics
A method for digestion of light and medium Iraqi crude oils (Basrah and Khanaken oils) 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 by inductively coupled plasma optical emission spectrometry (ICP–OES) and Mo, Ti, Mn, Li, Se −1 , Rb, Ag, Ba, Pb, As, Cd, Cr, Fe, Ni, V and Zn by inductively coupled plasma mass spectrometry (ICP–MS). Upon using MIC it was possible to obtain lower limits of detection by ICP–MS and also by ICP–OES compared with those obtained by microwave‐assisted digestion. The MIC was the best choice with regard to the possibility of using dilute nitric acid as an absorbing solution, which is important to minimize the interference 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 spectroscopy as an alternativee to traditional petroleum geochemical methods for crude oil characterization. The infrared fingerprints agree with the results obtained from GC–MS analysis.