Luminescence properties of thallium crystal phosphors and their use in determining microgram quantities of thallium

Journal Article · Sat Feb 01 04:00:00 EST 1986 · J. Anal. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:6867620

Matveets, M A

The preparation and luminescence properties of crystal phosphors based on alkali metal iodide and calcium oxide substrates were studied. The highest luminescence intensities were achieved with iodide substrates at 200/sup 0/ and with the calcium oxide substrate at 800/sup 0/. The calibration graphs were linear in the thallium concentration ranges 0.03-5.0 and 0.1-2.0 mu g using sodium and potassium oxides, respectively, and in the range 0.05-5 mu g using cesium iodide and calcium oxide. A method is proposed for the determination of down to 3 x 10/sup -4/% thallium in rocks, using a crystal phosphor with sodium iodide substrate.

• Research Organization: Institute of Mineral Resources, Alma - Ata
• OSTI ID: 6867620
• Journal Information: J. Anal. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Anal. Chem. USSR (Engl. Transl.); (United States) Vol. 40:9; ISSN JACUA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
AMMONIUM COMPOUNDS
AMMONIUM HALIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CESIUM COMPOUNDS
CESIUM IODIDES
CHALCOGENIDES
CRYSTALS
DISPERSIONS
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
HIGH TEMPERATURE
HYDROFLUORIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
INORGANIC PHOSPHORS
IODIDES
IODINE COMPOUNDS
LUMINESCENCE
MATERIALS TESTING
METALS
MIXTURES
OXIDES
OXYGEN COMPOUNDS
PHOSPHORS
POTASSIUM COMPOUNDS
POTASSIUM IODIDES
SAMPLE PREPARATION
SODIUM COMPOUNDS
SODIUM IODIDES
SOLUTIONS
SUBSTRATES
SULFURIC ACID
TEMPERATURE EFFECTS
TESTING
THALLIUM
TRACE AMOUNTS