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- W1980311543 abstract "Abstract A rapid graphite-furnace atomic absorption procedure with simple dilution of samples was tested for the direct determination of sub-ppm levels of nickel in gas oils. The selection of appropriate graphite-furnace parameters, the type of solvent and organometallic standard, the effect of gas oil concentration in diluted samples, precision, accuracy and detection limit were investigated. Sample dilution was necessary because of high viscosity. Results obtained by standard addition for heavy gas oils were confirmed by a wet-ashing flame atomic absorption procedure. The relative standard deviation (r.s.d.) for consecutive determinations of nickel in gas oil solution containing 19 μg Ni l−1 was 3.1%, and day-to-day r.s.d. for a reference gas oil sample was 5.3%. Accuracy was determined with an NBS standard reference oil GM-5 (4.6 ± 4.7% relative error in four determinations). Recovery experiments gas 104 ± 12% of the added nickel." @default.
- W1980311543 created "2016-06-24" @default.
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- W1980311543 date "1983-01-01" @default.
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- W1980311543 title "Direct determination of nickel in gas oil by atomic absorption spectrometry with electrothermal atomization" @default.
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- W1980311543 doi "https://doi.org/10.1016/0003-2670(83)80084-1" @default.
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