Constant-Temperature Steam-Distillation Apparatus for Isolation of Fluorine

Abstract

An improved apparatus made entirely of glass for the isolation of fluorine is described, with details of design and a procedure for its use.The process is shorter and more convenient than processes previously described. Data are presented to show the accuracy and the effect of possible interfering agents. FLL'ORIXEhas been separated and isolated by evolution of silicon tetrafluoride in the absence of water in a glass system by Armstrong (1) and Kolthoff and Stansby (10). The isolation

Determination of Fluoride in Blood Serum

“…Keston (<?) described a method for testing for glucose utilizing the two enzymes, glucose oxidase (8,4) and horseradish peroxidase (7). The oxidation of glucose by oxygen is catalyzed by glucose oxidase, with the production of gluconic acid and hydrogen peroxide.…”

A New Microwave Acid Digestion Bomb Method for the Determination of Total Fluorine

“…We compared the results of our study to those obtained with the reverse extraction technique as the reverse extraction technique proved to have potential advantages over the conventional distillation [Huckabay et al, 1947] or diffusion procedures [Dabeka et al, 1979;Hinoide et al, 1992] for the isolation of fluorine from inorganic and organic materials [Venkateswarlu, 1974]. Furthermore, it was also found that the results of the reverse-extraction method compared favourably with those obtained with the aggressive oxygen bomb digestion method [Venkateswarlu, 1974].…”

Stoichiometry of Luminescent Apatites

“…Fluoride as F (16)(17)(18)(19).--Fluorine is separated from interfering ions by steam distillation from perchloric acid solution as hydrofluo-silicic acid. The fluoride is then determined by titration with thorium nitrate using sodium alizarin sulfonate as indicator.…”