Determination of Aluminium in Iron and Steel by Flame Photometry

概要

論文の詳細を見る
Flame photometric determination of Al in iron and steel by the use of a Tokoshi-type premixing burner in O_2-C_2H_2 gas was examined as to the measuring condition, especially to the influence of acid concentration and the interference of coexistent elements. The analytical line employed has the wavelength of 396.15 nm. The proportionality of line intensity and Al concentration is held well for 0〜40 ppm in a methanolic solution, when the photometry was applied for iron and steels, the matrix Fe being removed by methyl isobutyl ketone extraction. The acid-soluble Al was directly concentrated and adjusted to a definite volume with water (with methanol when the amount of Al was minute) to measure the flame intensity. The acid-insoluble Al was extracted with water from the pyrosulfate melt of the insoluble residue and then extracted as oxine complex salt into methyl isobutyl ketone which was then subjected to the flame photometry. The results measured for several samples of standard iron and steel concentrations were very satisfactory.
東北大学の論文