The determination of vanadium and nickel in mineral oils by flameless graphite tube atomization

Vanadium content of selected foods as determined by flameless atomic absorption spectroscopy

“…Deuterium arc background correction further improves selectivity by eliminating the remaining effects of nonspecific absorbing substances. Analysis for vanadium by graphite furnace atomic absorption has been reported for several types of substances (Omang, 1971;Segar and Gilio, 1973;Chakrabarti and Hall, 1973;Schramel, 1973;Muzzarelli and Roccetti, 1974). The effectiveness of the deuterium arc in correcting for interferences has been reported (Quickert et al, 1974).…”

Direct determination of nickel in xylene solutions of raw material for catalytic cracking with application of graphite furnace atomic absorption spectrometry

“…GFAAS has been used for Ni determination in petroleum and its products since the early 70s. [7][8][9][10][11][12][14][15][16][17][18][19][20][21][22][23][31][32][33][34][35][36] A wide range of materials has been analysed (from gasoline up to residual oil, asphaltenes and lubricating oil), having various contents of Ni (<0.001-850 mg kg À1 ). Only a few studies were devoted to the analysis of oils of the cracking raw material type.…”

“…14 However, the simplest method of petroleum products analysis was direct analysis, using solid sampling accessories, 9,11,23 or aer dissolution in an organic solvent. 15,16,[19][20][21]35,36 The dissolution of crude oil in xylene (an efficient solvent for most petroleum products, also those containing asphaltenes) prior to GFAAS analysis was applied already in the work of Omang. 35 Since that time new facts have been discovered regarding the possible difficulties of GFAAS analysis of crude oil or its products.…”

“…15,16,[19][20][21]35,36 The dissolution of crude oil in xylene (an efficient solvent for most petroleum products, also those containing asphaltenes) prior to GFAAS analysis was applied already in the work of Omang. 35 Since that time new facts have been discovered regarding the possible difficulties of GFAAS analysis of crude oil or its products.…”

Determination of wear metals in engine oils by atomic absorption spectrometry with a graphite rod atomizer

“…Brodie and Matousek (14) have investigated the use of a graphite mini-furnace for the determination of Ag, Al, Cu, Cr, Mg, Ni, and Pb in lubricating oils, and have obtained good sensitivity using undiluted samples no larger than 1 µ . Alder and West (75) have studied graphite-rod atomization for copper and silver in dieselengine lubricating oils, and Omang (16) has reported the use of a graphite-tube furnace for determining nickel and vanadium in crude petroleum.…”