Construction and Application of Electrolytic Cell for Iodine Determination

Iodine is very important element and has a key role in different fields of life so its analysis is of great significance. For the determination of iodine usually iodometric methods are used, but the range of this method is up to molar level. In the present work a simple, easy and economically feasible method is electroanalytical method is developed. An electrolytic cell for the determination of iodine was constructed which was based on redox reaction. The determination of iodine was done by using KI electrolysis mechanism. NaCl (10 ppm) was taken as a standard and solutions of different iodine concentration were added at each time and current (μA) were recorded, with the help of which standard curve was prepared. It was applied to various unknown standard samples and appropriate results were obtained. Similarly to check the practical applicability of the method it was successfully applied to different table salts (Swaad and Raaz). The range of this method is up to micro level (upto 10 ppm) and also had a considerable error rang but that will be overcome by further modification of this method.