A semi-automated method for the determination of total iodine in milk.

A method for determination of iodine in milk is described. This method involves the destruction of organic matter by alkaline incineration and automated spectrophometric determination of iodide based on the Sandell and Kolthoff's reaction. The recoveries of added iodide before calcination were between 90.05 +/- 7.36% and 97.14 +/- 4.56% (mean +/- S.D.). The coefficient of variation ranged from 2.15 to 7.21% according to the iodine content of the milk. The limit of detection was estimated to be around 2 micrograms/kg.