Determination of iodide in nutritional beverage products using an ion selective electrode.
An ion selective electrode procedure is described for the precise, accurate determination of iodide at the sub-ppm level in a variety of nutritional beverages. The relative standard deviation of the analysis is 1--4%; recoveries range from 90 to 120%. Comparison with results from neutron activation analysis and the traditional Sandell-Kolthoff procedure shows that the ion selective electrode procedure is free of determine error and that dry ashing of samples can lead to low results.
D001628:Beverages / Q000032:analysis*; D004566:Electrodes; D006801:Humans; D007225:Infant Food / Q000032:analysis*; D007454:Iodides / Q000032:analysis*; D008894:Milk Proteins / Q000032:analysis; D010940:Plant Proteins / Q000032:analysis; D013025:Glycine max
D007454:Iodides; D008894:Milk Proteins; D010940:Plant Proteins