Simultaneous use of 82Br and 24Na radionuclides in the whole-body counting of animals by high-resolution gamma-ray spectrometry

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In adult rats administered simultaneously with potassium 82Br-bromide and 24Na-sodium chloride, we demonstrated the parallel course of the excretion rates of bromide and sodium ions with the aid of in vivo whole-body counting of the animals by high-resolution gamma-ray spectrometry. The rats were exposed to various intakes of sodium ions accompanied by five different anions: Br−, Cl−, HCO3−, ClO4−, and SCN−. Regardless of the anion accompanying the sodium ion, the excretion rates of 82Br− and 24Na+ ions were directly proportional to the magnitude of sodium intake in the rats.

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