An Indirect Method for the Estimation of the Iodine Content in Raw Milk

Abstract
The measurement of I in milk by conventional chemical procedures is tedious and expensive. An ion selective electrode was evaluated in comparison to a microchemical method. Mean concentrations of I in a comparative study of 116 raw milk samples by the chemical method and ion selective electrode were 324 and 347 .mu.g/kg. Mean concentrations of I in 63 market milks by the chemical method and ion selective electrode were 359 and 409 .mu.g/kg milk. Correlations between methods were .95 and .87 for raw milk and market milk samples. The ion selective electrode can be used for monitoring I concentrations in raw milk but probably not in processed milk.