GAMMA-BACKGROUND AND BETA-BACKGROUND COUNTING OF I-131 IN MILK IN THEVICINITY OF THE NUCLEAR-CENTER, MEXICO

The aim of this work was to determine the contamination of I-131 in mi lk samples by low background gamma-spectrometry and low background B-c ounting techniques in the vicinity of the Nuclear Center in Salazar, M exico. The low background gamma-spectrometry was done directly. The de termination by low background B-counting consisted of a radiochemical separation of I-131 by ion exchange from the milk samples followed by measurement in a low background B-counting system. The results indicat ed that there was no contamination of I-131 in the samples.