Summary
A method for the determination of Li, Na, K and Ca in steel by flame photometry is described. The main components of steel (Fe, Cr, Ni and partially Mn) were electro-deposited on a mercury cathode from 1M HCl medium. Titanium and the remaining manganese were precipitated with ammonia at 60° C and a pH of 10–11. Li, Na, K and Ca were determined at 670.8, 588.9, 766.5 and 624.0 nm respectively, and the values for a blank were subtracted.
Zusammenfassung
Eine Methode zur flammenphotometrischen Bestimmung von Li, Na, K und Ca in Stahl wurde beschrieben. Die Hauptbestandteile (Fe, Cr, Ni und teilweise Mn) werden an einer Quecksilberkathode aus 1-m HCl abgeschieden. Titan und das restliche Mangan werden bei 60° C und pH 10–11 mit Ammoniak ausgefällt. Li, Na, K und Ca werden bei den Wellenlängen 670,8, 588,9, 766,5 und 624,0 nm gemessen, wonach man die Blindwerte in Abzug bringt.
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Sobkowska, A., Basińska, M. Flame photometry determination of Na, K, Li, and Ca traces in Cr-Ni steel. Mikrochim Acta 64, 227–234 (1975). https://doi.org/10.1007/BF01219389
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DOI: https://doi.org/10.1007/BF01219389