Determination of Micro Amount of Iron in Aluminium Metals and Aluminium Alloys by Atomic Absorption Spectrometry

概要

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The method of determination of iron by atomic absorption spectrometry was applied to the analysis of aluminium metals and alloys. The optimum conditions for the determination were as follows : the wavelength 2483 A, the current of the hollow cathode lamp for Fe 30 mA, the slit width 0.11 mm, air pressure 1.5 kg/cm^2, acetylene pressure 0.5 kg/cm^2. In the case of the atomizing after an extraction with MIBK, the optimum acetylene pressure was 0.3 kg/cm^2 with water-cooling of the burner. The presence of alloying elements and acids did not interfere except nickel, the interference of which varied with the anions present. A rapid method of the determination of 0.05〜1.0% of iron in aluminium metals and alloys without any separation of main elements was established. Also, as small as 0.0005〜0.01% of iron in high purity aluminium was determined after the extractive concentration of Fe with MIBK.
東北大学の論文