A dead-stop amperometric method based on electroactive equilibrium I-2 reversible arrow 21(-) redox couple is developed for the estimation of iodine in iodized salts locally marketed in Pakistan Twenty iodized salt samples. procured from local retailers were subjected to estimation of iodine content by the method The iodine concentrations in the samples were found to be very divergent, ranging from as low as 4.97 mg/kg to as high as 446.38 mg/kg. Parallel estimations. using simple thiosulphate-based titrimetric method, were conducted and the accuracy and precision of the proposed method is discussed The lower detection limit goes to close 1 mg/kg for the proposed method and the present study indicated that the method is quantitatively reliable, as determined by its application on synthetic samples of salt containing a broad range of iodine concentration, between 2.5 mg/kg to 120 mg/kg, with an overall percent error in the range of 0.5 to 4.4%.


M JAFFAR ,M A MINHAS ,KHALID MAHSUD ,