Traces of Radioactive I-131 in Rain Water and Milk Samples in Romania

摘要

Measurements of I-131 (T1/2 = 8.04 days) have been performed in IFIN-HH'sunderground laboratory situated in Unirea salt mine from Slanic-Prahova,Romania. The rain water samples were collected in March 27th in Brasov and inMarch 27th, 29th and April 2nd in Slanic. Also sheep milk was collected inSlanic area and subsequently measured. The samples were measured in theIFIN-HH's underground laboratory in ultra-low radiation background, using ahigh resolution gamma-ray spectrometer equipped with a GeHP detector having aFWHM = 1.80 keV at 1332.48 keV at the second Co-60 gamma-ray, and a relativeefficiency of 22.8%. The results show a specific activity of I-131 from 0.17 to0.87 Bq/dm^3. In the sheep milk from Slanic area the specific activity of I-131was about 6 Bq/dm^3