Summary
A new method for the determination of iodine in biological samples is described. If series of samples of uniform matrix are to be analyzed no mineralization is required: water soluble iodide coprecipitated on a carrier and tissue-bound iodine are both collected on a filter and simultaneously determined by X-ray fluorescence thin layer technique. In the particular case of the determination of iodine in rat thyroids this procedure allows a satisfactory screening of drugs influencing the iodine balance. In the general case of trace iodine determination in quite different matrices the organic material is ashed prior to the precipitation and measuring step. The trace iodine content of several reference materials from NBS, BCR and IAEA obtained by this method is given.
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Pavel, J., Fille, M. & Frey, U. Determination of iodine in biological materials and in some standard reference materials by X-ray fluorescence spectrometry. Z. Anal. Chem. 331, 51–54 (1988). https://doi.org/10.1007/BF00473896
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DOI: https://doi.org/10.1007/BF00473896