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Single Reagent Cu(II) Analysis

IP.com Disclosure Number: IPCOM000085084D
Original Publication Date: 1976-Feb-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Grande, JA: AUTHOR [+3]

Abstract

Two standard and recommended procedures for the analysis of Cu(II) in solution are the use of neocuproine or bathocuproine as a color forming reagent. In both procedures, after any necessary other sample preparation, add (successively with mixing between each addition) measured amounts of hydroxylamine hydrochloride solution, sodium citrate solution and the color-forming reagent.

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Single Reagent Cu(II) Analysis

Two standard and recommended procedures for the analysis of Cu(II) in solution are the use of neocuproine or bathocuproine as a color forming reagent. In both procedures, after any necessary other sample preparation, add (successively with mixing between each addition) measured amounts of hydroxylamine hydrochloride solution, sodium citrate solution and the color- forming reagent.

It has been shown that these addition-of-reagent steps (without the extraction preliminary steps) can be reduced in one of two ways without affecting the results obtained. In the first, the hydroxylamine hydrochloride and sodium citrate can be premixed as they are prepared and added as a single reagent, to be followed by the color-forming reagent. The second combines all three into a single reagent to be added to the copper solution being analyzed. The first case eliminates one step, the second, two. In both cases there is a time saving.

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