Determination of Zirconium in Magnesium Alloys Using p-Bromo- or p-Chloromandelic Acid

Extraction of Zirconium with Di-n-butyl Phosphate and Direct Determination in the Organic Phase with 1-(2-Pyridylazo)-2-naphthol. Application to Fluoride Solutions

“…The specific activity of the irradiated zirconium was determined from a radiochemical assay using a fluozirconate procedure and a chemical assay using the p-bromomandelic acid method (13). The zirconium content of the alloy was obtained by using the specific activity of the radiochemical assay of the alloy.…”

“…of 1 to 1 hydrochloric acid and dilute to 1 liter. Standardize the stock solution by the p-bromomandelic acid method (13). Prepare a wrorking solution containing 10 pg.…”

“…These results may be readily improved in a few additional days by correcting for impurities on the basis of decay measurements. Various methods (2,4,5,13) have been utilized for the determination of low levels of the biologically important radionuclide strontium-90 in environmental samples. Basically these involve concentration, separation of strontium from interfering radioactive and inert materials, and finally separation and counting of the yttrium-90 daughter after waiting a suitable time for its formation from strontium-90.…”

Titrimetric Determination of Zirconium in Magnesium Alloys

“…The dissolution procedures used in the present study are based on those proposed by Wengert (5), which separate acidsoluble and acid-insoluble zirconium by treating the sample with dilute (1 to 4) hydrochloric acid; the insoluble fraction is changed to a soluble form by fusion with potassium hydrogen sulfate. Essentially the same dissolution procedure tvas used by Papucci and Klingenberg (4). EXPERIMENTAL Reagent grade sulfuric acid (specific gravity 1.84) -was diluted 1 to 10 by volume with distilled water.…”

Determination of Zirconium in Titanium Alloys Using p-Bromo- or p-Chloromandelic Acid

“…This difference in distribution of lipoproteins in dog and human serum has been observed by other investigators. Nikkilá (3) observed that the greatest reduction on delipidation of dog serum occurs in the «-globulin portion and not in the ßglobulin portion, whereas the greatest reduction in human serum on delipidation occurs in the beta fraction.…”