Wandt MA, Rodgers AL. Determination of fluoride in urinary calculi using a quantitative microdiffusion method.
UROLOGICAL RESEARCH 1988;
16:431-6. [PMID:
3232277 DOI:
10.1007/bf00280024]
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Abstract
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.
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