Radionuklido 90Sr tūrinis aktyvumas pietrytinėje Baltijoje praėjus dešimčiai metų po avarijos Černobylyje

Abstract

The radio-nuclide 90Sr volume activity (VA) measurements were carried out in 1996, i.e. in ten years after Chernobyl PP accident in the south-eastern Baltic in different seasons. It is determined that after Chernobyl PP accident radio-nuclide 90Sr VA absolute values were not changed in ten years. The VA values variation range was practically the same as 10 years ago. In August of 1996 it was from 15 up to 64 Bq/m3. These high values could be formed by natural gydrophysical processes or by additional contamination source.