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A Procedure for the Determination of Total Iodine in Radioactive Iodide Preparations of High Specific Activity^1,2,

Rochester, New York

ABSTRACT

A method, based on radioactivity measurements, is described for determining total iodine in highly radioactive iodide samples. In ¹³¹I-labeling of protein or other substances, by procedures in which ¹³¹I as iodide is oxidized to positive iodine, this analysis permits calculation of the amount of iodine incorporated in the labeled product. When the iodinating agent is iodine monochloride, into which ¹³¹I is introduced by isotopic exchange, this analysis makes it possible to predict the fraction of the ¹³¹I used that will be in the iodinated substance.

FOOTNOTES

¹ From the Department of Radiation Biology, University of Rochester School of Medicine and Dentistry, Rochester, New York.

² This paper is based on work performed under contract with the U. S. Atomic Energy Commission at the University of Rochester Atomic Energy Project, Rochester, New York.