Open AccessDetermination of Vanadium in Heavy Oils by Atomic Absorption Spectrometry Using a Graphite Furnace Coated with Tungsten
Author(s) -
Yoshikazu Nakamoto,
Tatsuro Ishimaru,
Nobutaka Endo,
Koji Matsusaki
Publication year - 2004
Publication title -
analytical sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 73
eISSN - 1348-2246
pISSN - 0910-6340
DOI - 10.2116/analsci.20.739
Subject(s) - vanadium , chemistry , ashing , tungsten , graphite furnace atomic absorption , graphite , sulfur , atomic absorption spectroscopy , analytical chemistry (journal) , nickel , sample preparation , oil refinery , mass spectrometry , metallurgy , inorganic chemistry , chromatography , physics , organic chemistry , quantum mechanics , materials science
A simple and rapid method was established for the direct determination of vanadium in an oil sample using the tungsten-coated graphite-furnace AAS. The interference of the sulfur compound could be suppressed by choosing the ashing temperature. If the sulfur concentration in the sample is diluted to 1.0 wt% or less, the interference can be suppressed. This proposed method should make important contributions to the quality control of petroleum refineries.