PHOTOMETRIC DETERMINATION OF THORIUM BY MEANS OF THORON

Journal Article · Thu Jan 01 04:00:00 EST 1959 · Magyar Tudomanyos Akad., Kem. Tudomanyok Osztalyanak, Kozlemenyei

OSTI ID:4161562

Almassy, G; Hadobas, B

A technique was developed for the determination of thorium in ores. The ore specimen is melted with KHSO/sub 4/ (5 g per 1 g of ore), the melt is dissolved in concentrated HC1 during a 30 to 40 min period, the solution is filtered (to eliminate SiO/sub 2/ and TiO/sub 2/) and Fe/sup 3+/, Al/sup 3+/, and Th/sup 4+/ in the filtrate are precipitated with ammonia. The precipitate is dissolved in HC1, tartaric acid is introduced, a 10% solution of ascorbic acid (to reduce Fe/sup 3+/) is added, 5 ml of 0.04% aqueous solution of thoron are added, and the solution is photometrically analyzed. The sensitivity of Th determination is increased (up to 0.001%) if ethanol, methanol, or acetone (up to 40 to 70%) is added to the analyzed solution.

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-14-022872
• OSTI ID: 4161562
• Journal Information: Magyar Tudomanyos Akad., Kem. Tudomanyok Osztalyanak, Kozlemenyei, Journal Name: Magyar Tudomanyos Akad., Kem. Tudomanyok Osztalyanak, Kozlemenyei Vol. Vol: 11, No. 1
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACETONE
ALUMINUM
AMMONIA
CHEMICAL REACTIONS
CHEMISTRY
ETHANOL
FILTERS
HYDROCHLORIC ACID
IRON
MELTING
METHANOL
ORES
ORGANIC ACIDS
PHOTOMETRY
POTASSIUM SULFATES
PRECIPITATION
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
RADON 220
SEPARATION PROCESSES
SILICON OXIDES
SOLUTIONS
TARTARIC ACID
THORIUM
TITANIUM OXIDES
VITAMIN C
VITAMINS
WATER