INDICATOR COMPOSITION FOR DETERMINATION OF COBALT (II) IN AQUEOUS SOLUTION Russian patent published in 2006 - IPC G01N31/22 G01N21/78 

Abstract RU 2267778 C1

FIELD: analytical chemistry, inorganic chemistry.

SUBSTANCE: invention relates to indicator compositions and can be used in determination of cobalt (II) in aqueous solutions, in particular, in sewage and industrial solutions. Indicator composition for determination of cobalt (II) in aqueous solutions comprises nitroso-R-salt, water; as a sorbent it comprises cation-exchange resin KB-4P-2, and sodium acetate as a substance of medium, and these components are taken in the following ratio, wt.-%: cation-exchange resin KB-4P-2, 0.4; sodium acetate, 0.03; nitroso-R-salt, 0.0011, and water, the balance. Invention provides reducing volume of a sample and time for carrying out analysis with simultaneous enhancing sensitivity and selectivity of the procedure.

EFFECT: improved assay method.

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RU 2 267 778 C1

Authors

Kaljakina Ol'Ga Petrovna

Kononova Ol'Ga Nikolaevna

Kachin Sergej Vasil'Evich

Kholmogorov Aleksandr Gerasimovich

Dates

2006-01-10Published

2004-11-17Filed