Laser-luminescent determination of uranium in natural waters with concentration of titanium hydroxide and using sodium polysilicate
Two methods for determining uranium in samples with a high content of quenching agents are compared, taking as an example the analysis of waters from the Vuoksa River, Baltic Sea and Finnish Bay. The first of these methods was developed by the authors and consists in concentrating uranium on TiO/sub 2/ x nH/sub 2/O under dynamic conditions, followed by laser luminescent determination at 77/sup 0/K in 0.1 M H/sub 2/SO/sub 4/. The second method consists in direct recording of the luminescence of uranium in a 0.7% solution of sodium polysilicate at room temperature. The detection limit of the second method is estimated by the authors as 2 x 10/sup -11/ g/ml, while the detection limit of the first method is lower because concentration is used. The method is especially suitable for analysis of natural waters with a high concentration of hydrolyzable elements. Quenching rate constants of uranyl were measured for a large number of ions in a polysilicate medium.
- OSTI ID:
- 5728948
- Journal Information:
- Sov. Radiochem. (Engl. Transl.); (United States), Vol. 28:5; Other Information: Translated from Radiokhimiya; 28: No. 5, 606-610(Sep-Oct 1986)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SODIUM SILICATES
SORPTIVE PROPERTIES
SURFACE WATERS
MONITORING
WATER POLLUTION
TITANIUM HYDROXIDES
URANIUM COMPOUNDS
ADSORPTION
EMISSION SPECTRA
PHOTOELECTRON COUNTING
PHOTOLUMINESCENCE
TRACER TECHNIQUES
URANYL COMPOUNDS
BALTIC SEA
BAYS
LASER RADIATION
QUENCHING
SEAWATER
URANIUM 232
ACTINIDE COMPOUNDS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALI METAL COMPOUNDS
ALPHA DECAY RADIOISOTOPES
COUNTING TECHNIQUES
ELECTROMAGNETIC RADIATION
EVEN-EVEN NUCLEI
HEAVY NUCLEI
HYDROGEN COMPOUNDS
HYDROXIDES
ISOTOPE APPLICATIONS
ISOTOPES
LUMINESCENCE
NUCLEI
OXYGEN COMPOUNDS
POLLUTION
RADIATIONS
RADIOISOTOPES
SEAS
SILICATES
SILICON COMPOUNDS
SODIUM COMPOUNDS
SORPTION
SPECTRA
SURFACE PROPERTIES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
URANIUM ISOTOPES
WATER
YEARS LIVING RADIOISOTOPES
520101* - Environment
Aquatic- Basic Studies- Radiometric Techniques- (-1989)