Novel Radiotracer Method for Fluoride Determination.

Abstract

uniform, the inability to apply this correction accurately probably contributes significantly (±5%) to the over-all standard error.The major error in the iron values was produced by the inability to correct adequately for the concentration of iron in the lead foil. A previous study of similar high purity lead foil (4) showed a variation amounting to a factor of 6.8 among 12 similar pieces of foil.In the case of the smallest particle in this study, 39% of the observed iron activity is calculated to have been produced by activation or iron impurities in the lead foil. A value of 3.79 p.p.m. iron in the foil was used for all specimens. It is obvious that

Solvent Extracting Studies of Tantalum Fluoride Complexes with N-Benzoylphenylhydroxylamine, Tri-n-octylphosphine Oxide and Methyl Isobutyl Ketone Using Computer Techniques.

“…The mechanism for extraction of tantalum from fluoride solutions involves either direct solvation of a neutral fluorotantalic acid or solvation of a proton followed by an ion association type of extraction (8,10,11). EXPERIMENTAL Apparatus.…”