Abstract
By using a Tokoshi type oxygen-acetylene premixing burner, the flame photometric determination of vanadium in iron and steel was investigated on the measuring conditions, the influences of coexistent elements and the method of separation of molybdenum from matrix elements. The 379.82 mμ line was used for the determination, and the line intensity had good linearity with Mo concentration. Molybdenum was separated from matrix iron by MIBK extraction of the precipitate of Mo-α-benzoin oxime complex from 2.5 N sulfuric acid acidity. By this means, almost all elements did not interfere except for Cr, Bi, Co, Ce and Nb giving lower results. The influences of the latters were avoided by the standard addition method. The variation coefficient of the analytical results was 4.4%.
