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Sensitivity of Bremsstrahlung Activation Analysis For Iodine Determination^1,2,3,

Boston, Massachusetts

ABSTRACT

With bremsstrahlung (gamma photon) activation, trace quantities of ¹²⁷I at the levels encountered in human serum can be measured. Using the (, n) reaction it is not necessary to remove the Na⁺ from the system, as it is in neutron activation analysis. In addition, there is no significant intereference from other elements, such as mercury, which are also activated. This technique of measuring trace quantitites of ¹²⁷I may be further developed for biological and medical applications not now possible with available classical techniques.

FOOTNOTES

¹ Presented at the Twelfth Annual Meeting of the Society of Nuclear Medicine, June 17, 1965, Bal Harbour, Florida.

² From the Radioisotope an Medical Service, Boston Veterans Administration Hospital, Boston University School of Medicine and the U.S. Army Natick Laboratories, Boston, Massachusetts.

³ Published in part in the Proceedings of a Symposium on Radioisotope Sample Measurement Tehniques in Medicine and Biology, International Atomic Energy Agency, Vienna, Austria, 1965.

⁴ Present address: National Aeronautics an Space Administration, Electronics Research Center, Instrumentation Laboratory, Cambridge, Mass.