Abstract
Neutron activation analysis combined with a simple exchange pre-separation is described for the determination of iodide and iodate in liquid samples. Iodide and iodate in seawater were separated by passing natural seawater through a small AGI-x4 ion exchange column. The effluent and washings of water were collected, acidified to pH 1.0, KHSO3 was added to the effluent to reduce IO3 − to I–, and the effluent was passed through a new column. By eluting with diluted KNO3 solution and de-ionized water to remove Br−, Cl− and other ions, the columns were directly irradiated for the determination of iodide and iodate. For urine and milk, inorganic iodide was separated and determined by directly passing sample through the exchange column and washing. Under these experimental conditions, 10 ng is the detection limit for iodine.
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Hou, X., Dahlgaard, H., Rietz, B. et al. Pre-Separation Neutron Activation Analysis of Sewater, Urine and Milk for Iodide and Iodate. Journal of Radioanalytical and Nuclear Chemistry 244, 87–91 (2000). https://doi.org/10.1023/A:1006727107418
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DOI: https://doi.org/10.1023/A:1006727107418