Analytical Sciences
Online ISSN : 1348-2246
Print ISSN : 0910-6340
ISSN-L : 0910-6340
Notes
New Convenient Dissolution of Iron-Rhodium Alloys Using Hydrochloric Acid Containing a Small Amount of Nitric Acid without Heating for an ICP-AES Analysis
Yuetsu DANZAKITetsuya ASHINO
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JOURNALS FREE ACCESS

2001 Volume 17 Issue 8 Pages 1011-1013

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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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© 2001 by The Japan Society for Analytical Chemistry
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