Catalytic determination of ultratrace amounts of ruthenium with oscillopolarography monitoring
- Guangxi Normal Univ., Guilin (China)
The single sweep oscillopolarographic behaviour of Rhodamine B in sulphuric acid medium was investigated. A novel, sensitive and selective catalytic method with oscillopolarography monitoring for the determination of ultratrace amounts of ruthenium was described, based on the catalytic effect of Ru(III) on the slow redox reaction occurring between Rhodamine B and potassium periodate in sulphuric acid medium at 25[degrees]C. Single sweep oscillopolarography is used to monitor the changes in concentration of Rhodamine B by means of the second derivative wave [minus]0.55 V vs. SCE. The determination range from 8.2x10[sup [minus]10] to 2.5x10[sup [minus]8] M Ru was obtained by the initial rate procedure. Influence of 30 foreign ions was considered. Ru in ore samples was analysed by this method, with satisfactory results.
- OSTI ID:
- 7197866
- Journal Information:
- Analytical Letters; (United States), Journal Name: Analytical Letters; (United States) Vol. 26:9; ISSN ANALBP; ISSN 0003-2719
- Country of Publication:
- United States
- Language:
- English
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THE CHEMISTRY OF RUTHENIUM. PART I. THE FORMATION AND EXAMINATION OF AN EXTRACTABLE RUTHENIUM NITRATE IN MACROSCOPIC AMOUNTS. PART II. THE EFFECT OF FERROUS SULPHAMATE TREATMENT
Related Subjects
400102* -- Chemical & Spectral Procedures
AMINES
CARBOXYLIC ACIDS
CATALYTIC EFFECTS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
DYES
ELEMENTS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
METALS
ORE COMPOSITION
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PLATINUM METALS
POLAROGRAPHY
QUANTITATIVE CHEMICAL ANALYSIS
REAGENTS
REDOX REACTIONS
RHODAMINES
RUTHENIUM
TRANSITION ELEMENTS