Determination of fluoride content in drinking water and tea infusions using fluoride ion selective electrode

Determination of Fluoride in Various Samples and Some Infusions Using a Fluoride Selective Electrode

Introduction Fluoride (F−) is an important anion, present in various environmental, clinical and food samples. Small amounts of fluoride are vital for the human organism, but it is toxic in larger amounts. For adults the lethal dose is 0.20–0.35 g F− per kg body weight. Fluoride is widely used in various branches of industry and some fluoride compounds are formed as by-products in certain proce...

Determination of fluoride in wine by fluoride selective ion electrode, standard addition method: collaborative study.

The accuracy, precision, and reproducibility of a rapid method for determination of fluoride in wine, using a fluoride selective ion electrode, were established by a collaborative study involving 12 laboratories, 5 in Europe and 7 in the United States. The laboratories assayed 6 Youden pairs of fluoride-fortified, red and white wine samples with fluoride concentrations ranging from 0.2 to 3.0 m...

Measurements with fluoride ion selective electrode

Where E0 is the standard electrode potential, R is the universal gas constant, T is the absolute temperature, z is the number of moles of electrons transferred in the cell reaction or halfreaction, F is the Faraday-constant, and cox and cred are the concentrations of the oxidized and reduced forms of the component. The potential of the hydrogen electrode is declared to be 0.000 V at all tempera...

Ion Selective Electrode. the Measurement of Fluoride Ion Activity in Mouth Wash, Toothpaste and Drinking

Remember to bring in your own drinking water sample to be tested for Fluoride. Ahead of the actual laboratory work, you need to sign-out from the stockroom a 500 mL plastic bottle in which to store your drinking water sample. Note valuable laboratory time can be saved if your group has read this experiment ahead of time. It is suggested that one of the partners start to dissolve the toothpaste ...

Fluoride in Drinking Water