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Hydrogen peroxide

โœ Scribed by J.S.H.


Publisher
Elsevier Science
Year
1928
Tongue
English
Weight
26 KB
Volume
206
Category
Article
ISSN
0016-0032

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โœฆ Synopsis


Quantitative Determination of Nickel in the Presence of

Chromium. When alpha benzildioxime is added to the ammoniacal solution of a nickel salt, the nickel is precipitated quantitatively as the nickel derivative of the dioxime. However, if chromic salts are also present, they contaminate the precipitate even when tartrates or citrates have been added to the solution. FREDERICK G. GERMUTH of the Department of Public Works of Baltimore (Chemist Analyst, I928, 17, No. 2, pages 3, 7) finds that the addition of a minute quantity of cupric ammonium chloride to the solution prior to precipitation of the nickel prevents occlusion of chromium in the nickel precipitate, and thus increases the accuracy of the determination.


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Notes and Com~Jlents.