Apparatus and method for uranium determination

Patent · Tue Apr 15 04:00:00 EST 1980

OSTI ID:5590346

Kinrade, J D; Robbins, J C

A method is claimed of detecting uranium compounds in an aqueous sample, containing uranium compounds that phosphoresce in response to ultraviolet light and other compounds which luminesce but have a shorter lifetime of phosphorescence than uranium compounds comprising the steps of increasing the phosphorescent characteristics of the uranium compounds and simultaneously diminishing the quenching efficiency of interfering ions in the sample by adding a polyphosphate compound and a buffer; projecting ultraviolet light into the sample; terminating said projection of ultraviolet light into the sample; measuring intensity of the decaying uranium phosphorescence at a time delay after the termination of the ultraviolet light, the time delay being longer than the time for luminescence due to materials other than uranium compounds possibly in the sample to substantially decay.

• Assignee: Scintrex Ltd (Canada)
• Patent Number(s): US 4198568
• OSTI ID: 5590346
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
ACTINIDES
AQUEOUS SOLUTIONS
CHEMICAL ANALYSIS
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
LIFETIME
LUMINESCENCE
MEASURING INSTRUMENTS
METALS
MIXTURES
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORESCENCE
PHOSPHORUS COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
RADIATIONS
SOLUTIONS
ULTRAVIOLET RADIATION
URANIUM