Radionuclide analysis by gamma-ray spectrograms of environmental samples

Full text: Radionuclide analysis of environmental samples are carried out at laboratory gamma-spectrometric device SARI-2 (system of radiometric measurements automation) that consists of standard blocks - the analyser of impulses AI-1024, scintillation gauge NaJ (Tl) type 6931-20 (size of crystal 150x100, FEU-49), blocks of power such as BNVZ-05, BPZ-591. The detector is protected from natural radiation by a special leaden small house, with thickness of walls 100 mm and with a three-layer facing of Cd-Cu-Al. Using this device nuclear composition in various liquid and solid objects has been studying in Azerbaijan. The nature of radioactive anomalies at the fields contaminated by oil and their uranium-radium origin were revealed. Radionuclide composition of water from surface and underground channels within oil fields territories and samples from different industrial sites were also investigated. Analysing building materials (bricks, suspended ceilings, etc.) high level of radium in some of them was determined. Presence of Cesium-137 in several food products was established. More over increment of natural radioactive background in Maycopian rocks (Oligocene- Miocene) associated with the presence of great amount of elements of uranium-radium series. So the radionuclides anomalies nature, elements content and relation to different technogenical and geological processes were revealed. (author)