Laser-luminescent determination of uranium in natural waters with concentration of titanium hydroxide and using sodium polysilicate

Journal Article · Fri May 01 04:00:00 EDT 1987 · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:5728948

Nikitina, S A; Stepanov, A V

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), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 28:5; ISSN SVRDA
• Country of Publication: United States
• Language: English

Related Subjects

520101* -- Environment
Aquatic-- Basic Studies-- Radiometric Techniques-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACTINIDE COMPOUNDS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ADSORPTION
ALKALI METAL COMPOUNDS
ALPHA DECAY RADIOISOTOPES
BALTIC SEA
BAYS
COUNTING TECHNIQUES
ELECTROMAGNETIC RADIATION
EMISSION SPECTRA
EVEN-EVEN NUCLEI
HEAVY NUCLEI
HYDROGEN COMPOUNDS
HYDROXIDES
ISOTOPE APPLICATIONS
ISOTOPES
LASER RADIATION
LUMINESCENCE
MONITORING
NUCLEI
OXYGEN COMPOUNDS
PHOTOELECTRON COUNTING
PHOTOLUMINESCENCE
POLLUTION
QUENCHING
RADIATIONS
RADIOISOTOPES
SEAS
SEAWATER
SILICATES
SILICON COMPOUNDS
SODIUM COMPOUNDS
SODIUM SILICATES
SORPTION
SORPTIVE PROPERTIES
SPECTRA
SURFACE PROPERTIES
SURFACE WATERS
TITANIUM COMPOUNDS
TITANIUM HYDROXIDES
TRACER TECHNIQUES
TRANSITION ELEMENT COMPOUNDS
URANIUM 232
URANIUM COMPOUNDS
URANIUM ISOTOPES
URANYL COMPOUNDS
WATER
WATER POLLUTION
YEARS LIVING RADIOISOTOPES