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.
3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF EXPRESS-IDENTIFICATION OF COBALT (II) AND COPPER (II) IN WATER-SALT SOLUTIONS FOR ENVIRONMENTAL OBJECTS ANALYSIS | 2014 |
|
RU2556199C1 |
| INDICATOR COMPOSITION TO DETECT PALLADIUM ( II ) IN AQUEOUS SOLUTIONS | 2002 |
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| INDICATOR COMPOSITION FOR DETERMINING GOLD(III) IN AQUEOUS SOLUTIONS | 2005 |
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| INDICATOR COMPOSITION FOR DETERMINING GOLD(III) IN AQUEOUS SOLUTIONS | 2006 |
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| METHOD FOR COPPER (II) AND MANGANESE (II) DETERMINATION BY INDICATING TUBE IN CASE OF THEIR JOINT PRESENCE IN SOLUTIONS FOR NATURAL WATERS ANALYSIS | 2015 |
|
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| METHOD OF CONCENTRATION AND SEPARATION OF IONS OF METALS | 2001 |
|
RU2192300C1 |
| METHOD OF DETERMINING COBALT (II) | 2011 |
|
RU2456592C1 |
| METHOD OF DETECTING COBALT (II) | 2008 |
|
RU2374638C1 |
| INDICATOR COMPOSITION FOR JOINT DETERMINATION OF COPPER(II) AND MANGANESE(II) IN AQUEOUS SOLUTIONS | 2004 |
|
RU2253864C1 |
| INDICATOR COMPOSITION FOR DETERMINING SILVER(I) IN AQUEOUS SOLUTIONS | 2005 |
|
RU2291421C1 |
