Rohner F, Garrett G, Laillou A, Frey S, Mothes R, Schweigert F, and Locatelli-Rossi L
December 2012, Food and Nutrition Bulletin
Despite considerable progress made in the past decade through salt iodization programs, over 2 billion people worldwide still have inadequate iodine intake, with devastating consequences for brain development and intellectual capacity. To optimize these programs with regard to salt iodine content, careful monitoring of salt iodine content is essential, but few methods are available to quantitatively measure iodine concentration in a simple, fast, and safe way. To address this gap, the validation of a newly developed device that quantitatively measures the content of potassium iodate in salt in a simple, safe, and rapid way was assessed by examined independently and in comparison with iodometric titration, using salt samples from several countries. Comparison with the iodometric method showed high agreement between the methods (R2 = 0.978; limits of agreement, –10.5 to 10.0 mg/kg). Therefore, the device offers a field- and user-friendly solution to quantifying potassium iodate salt content reliably. For countries that use potassium iodide in salt iodization programs, further validation is required.