Spectrophotometric determination of fluoride in fluoride-bearing minerals after decomposition by fusion with sodium hydroxide

6533b857fe1ef96bd12b3a94

RESEARCH PRODUCT

Spectrophotometric determination of fluoride in fluoride-bearing minerals after decomposition by fusion with sodium hydroxide

A C Moreno Jóse Vicente Gimeno Adelantado Francisco Bosch Reig Vicente Peris Martinez

subject

Chemistry Sodium Inorganic chemistry Sodium peroxide chemistry.chemical_element Cryolite Analytical Chemistry chemistry.chemical_compound Sodium hydroxide Aluminium Sodium fusion test Fluorine Fluoride Nuclear chemistry

description

The decomposition of highly insoluble minerals (fluorspar and cryolite) by fusion with molten alkali-metal hydroxides is studied. The introduction of additives such as aluminium compounds or sodium peroxide to obtain total liberation of fluoride from calcium fluoride samples, is tested. The fusion is done in a silver crucible with a Bunsen burner. The cooled melt is easily soluble, giving solutions suitable for spectrophotometric fluoride determination by the Zr(IV)-fluoride-Erichrome Cyanine R method.

year	journal	country	edition	language
1984-05-09	Talanta

https://doi.org/10.1016/0039-9140(85)80067-9

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