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

Journal Article · Sat Feb 01 00:00:00 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), Vol. 40:9
• Country of Publication: United States
• Language: English

Related Subjects

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