Ion-selective electrode in determining fluorine in binary fluorides of metals of groups II-V
The authors have developed a method of determining fluorine by ion-selective electrode techniques in specimens containing mixtures of the fluorides of magnesium and the rare-earth elements (REE), as well as scandium and bismuth. The specimens after treatment at high temperatures are sparingly soluble at room temperature in water and also in aqueous solutions of acids and bases. The authors found that a mixture of KNaCO/sub 3/ and K/sub 2/S/sub 2/O/sub 8/ with a mass ratio of 2:1 was an effective flux for MgF/sub 2/-MeF/sub 3/ specimens, where Me is an REE ion. The combined method of analyzing binary mixtures of fluorides (Mg and REE, Sc and Bi) which provides satisfactory accuracy and reliability in determining the fluoride and two different metals whose compounds may have various ratios in the samples.
- Research Organization:
- Bogatskii, Physiochemical Institute, Odessa
- OSTI ID:
- 5399631
- Journal Information:
- Ind. Lab. (Engl. Transl.); (United States), Vol. 51:7
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
FLUORIDES
ION SELECTIVE ELECTRODE ANALYSIS
QUANTITATIVE CHEMICAL ANALYSIS
ION-SELECTIVE ELECTRODES
ACCURACY
RARE EARTH COMPOUNDS
BINARY MIXTURES
BISMUTH FLUORIDES
FLUORINE
HEAT TREATMENTS
MAGNESIUM FLUORIDES
POTASSIUM CARBONATES
POTASSIUM SULFATES
SAMPLE PREPARATION
SCANDIUM FLUORIDES
SODIUM CARBONATES
TITRATION
ZIRCONIUM FLUORIDES
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHEMICAL ANALYSIS
DISPERSIONS
ELECTRODES
ELEMENTS
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HALOGENS
MAGNESIUM COMPOUNDS
MIXTURES
NONMETALS
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
SCANDIUM COMPOUNDS
SODIUM COMPOUNDS
SULFATES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
400102* - Chemical & Spectral Procedures