New convenient dissolution of iron-rhodium alloys using hydrochloric acid containing a small amount of nitric acid without heating for an ICP-AES analysis

Y. Danzaki; T. Ashino

doi:10.2116/analsci.17.1011

New convenient dissolution of iron-rhodium alloys using hydrochloric acid containing a small amount of nitric acid without heating for an ICP-AES analysis

Y. Danzaki, T. Ashino

Institute for Materials Research (IMR)

Research output: Contribution to journal › Article

10 Citations (Scopus)

Abstract

A new convenient dissolution method for Fe-Rh alloys has been developed. Aqua regia has been used for the dissolution of rhodium alloy samples. However, it is difficult to dissolve high-concentration rhodium (more than 50 mass%) in aqua regia, because a rhodium-passivity on the alloys surface occurs with nitric acid. By using hydrochloric acid containing a small volume of nitric acid, Fe-Rh (24-64 mass%) alloys could be completely decomposed and dissolved under mild experimental conditions. The principal advantages of this method are simplicity and time-saving compared with other dissolution methods.

Original language	English
Pages (from-to)	1011-1013
Number of pages	3
Journal	analytical sciences
Volume	17
Issue number	8
DOIs	https://doi.org/10.2116/analsci.17.1011
Publication status	Published - 2001 Jan 1

ASJC Scopus subject areas

Analytical Chemistry

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abstract = "A new convenient dissolution method for Fe-Rh alloys has been developed. Aqua regia has been used for the dissolution of rhodium alloy samples. However, it is difficult to dissolve high-concentration rhodium (more than 50 mass%) in aqua regia, because a rhodium-passivity on the alloys surface occurs with nitric acid. By using hydrochloric acid containing a small volume of nitric acid, Fe-Rh (24-64 mass%) alloys could be completely decomposed and dissolved under mild experimental conditions. The principal advantages of this method are simplicity and time-saving compared with other dissolution methods.",

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AB - A new convenient dissolution method for Fe-Rh alloys has been developed. Aqua regia has been used for the dissolution of rhodium alloy samples. However, it is difficult to dissolve high-concentration rhodium (more than 50 mass%) in aqua regia, because a rhodium-passivity on the alloys surface occurs with nitric acid. By using hydrochloric acid containing a small volume of nitric acid, Fe-Rh (24-64 mass%) alloys could be completely decomposed and dissolved under mild experimental conditions. The principal advantages of this method are simplicity and time-saving compared with other dissolution methods.

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