Determination of Iodide and Fluoride in Brassica Oleraceae Var. Acephale with Ion Selective Electrodes
Şükrü Kalaycı *
Department of Chemistry, Gazi University, Ankara, Turkey.
*Author to whom correspondence should be addressed.
Abstract
Black dandelion is widely grown in the Black Sea region, consumption as food is quite high. There are many trace elements important in terms of nutritional value. Goitre disease, which is common in this region, is caused by iodide deficiency. Fluoride is of great importance for the health of the teeth. Therefore, in our study, we wanted to measure the iodide and fluoride found in the most consumed dandelions in this region with iodide and fluoride selective electrodes.
The black cabbage samples were dried to constant weighing. It was made soluble by wet burning method. Iodide and fluoride ions were determined by dilution. Our electrode consisting of ion exchange, PVC and plasticizer has a sensitivity of 59 mV to 10-5 - 10-1 M iodide. Our electrode, which is composed of calcium fluoride and less soluble silver salts, shows a sensitivity of 28 mV to 10-5 - 10-1 M fluoride. Iodide and fluoride measurements can be made with our electrodes which are not sensitive to any other anion and cation.
Keywords: Determination, fluoride, iodide, selective electrode, Brassicia oleracase var. Acephale.