FIELD: chemistry.
SUBSTANCE: method for titrimetric determination of uranium in solutions in the presence of vanadium includes adding to the analysed solution phosphoric acid, followed by 10-15 ml of 2 mol/dm3 sulphuric acid and 5-10 ml tert-butanol. Further, uranium and other components of the mixture are reduced with titanium (III) chloride, followed by adding 2-3 droplets of saturated iron (III) chloride and sodium nitrite solution. Urea is then added. Titration is carried out by oxidising uranium with a sulphuric solution of ammonium vanadate while detecting a potential jump in the range of 550-600 mV. Concentration of uranium is determined from the amount of ammonium vanadate spent in order to reach the titration curve derivative peak.
EFFECT: high accuracy and sensitivity, faster analysis.
2 ex, 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR DETERMINING THE MASS FRACTION OF URANIUM (III) AND URANIUM (IV) IN THEIR JOINT PRESENCE IN URANIUM-CONTAINING CHLORIDE MELTS OF ALKALI METALS | 2023 |
|
RU2802629C1 |
| METHOD OF POTENTIOMETRIC DETECTION OF VANADIUM | 0 |
|
SU586377A1 |
| 0 |
|
SU217019A1 | |
| METHOD OF DETERMINING STRONG OXIDIZING AGENTS | 0 |
|
SU1270691A1 |
| METHOD FOR DETERMINING OXIDATION DEGREE OF POLYANILINE | 1992 |
|
RU2030745C1 |
| COMPLEX PROCESSING METHOD OF CARBON-SILICIC BLACK-SHALE ORES | 2011 |
|
RU2477327C1 |
| METHOD OF CHELATOMETRIC DETERMINING OF FERRUM(111) | 0 |
|
SU836587A1 |
| METHOD OF SEPARATE DETERMINATION OF TRI- AND TETRAVALENT VANADIUM | 0 |
|
SU710940A1 |
| PROCESSING METHOD OF BLACK-SHALE ORES WITH RARE METALS EXTRACTING | 2011 |
|
RU2493272C2 |
| PROCESS OF PICKLING OF METAL PRODUCTS | 1990 |
|
RU2168560C2 |
