Determination of fluoride in urinary calculi using a quantitative microdiffusion method.
A microdiffusion method for the separation of fluoride from other ions in urinary calculi has been developed, tested and assessed. The procedure involves digestion at 75 degrees C of samples with silicone-impregnated mixtures of nitric and perchloric acids in a specially designed diffusion cell and determination of the diffused fluoride with an ion-sensitive electrode. Several test samples were used to assess the recovery, accuracy and reproducibility of the procedure. Results for 20 stones of Indian origin are presented and discussed.
Wandt
M A
MA
Department of Physical Chemistry, University of Cape Town, Rondebosch.
Rodgers
A L
AL
D005459:Fluorides / Q000032:analysis*; D006801:Humans; D014545:Urinary Calculi / Q000032:analysis* / Q000209:etiology
D005459:Fluorides