臭化水素酸-臭素溶解によるマンガン-ロジウム合金の誘導結合プラズマ発光分析

概要

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A new dissolution method of a Mn-Rh alloy including trace amounts of Al and Si has been developed for the precise analysis by inductively coupled plasma-optical emission spectrometry (ICP-OES). For the determination of Mn, Rh, Al and Si in Mn-Rh alloy samples (100 mg), the samples were dissolved with 20 ml of HBr-Br_2, followed by the addition of 20 ml of HClO_4 at room temperature; then, most of HBr was decomposed into Br_2 with drops of H_2O_2. The resulting solution was concentrated to about 10 ml after the addition of 10 ml of HNO_3, and MnO_2 was decomposed with H_2O_2 after adding 10 ml of HCl (1+1) and 10 ml of H_2O to obtain a clear solution. Si was determined by a gravimetric method. Moreover, after being measured by ICP-OES, the analytical results were estimated with the sequential correction method.
2003-05-05