Desarrollo de procedimientos para la determinación de radioisótopos en muestras ambientales mediante técnicas de bajo recuento por centelleo líquido y radiación Cerenkov

Resumo

Nowadays, the use of liquid scintillation detectors has been an important advance in the detection of the radioactivity levels, both alpha and beta radioactivity, close to the background values. In this way, the recent acquisition by our research group (Física de las Radiaciones y Medio Ambiente) of a liquid scintillation detector model Tri-Carb 3170 TR/SL has been able to develop some new methodological lines, which are complementary to the previous lines that existed already in our group. This has come to be a notorious increase of our competitiveness within the field of natural radioactivity. Following this line, the main goal of this work has been to optimize different radiometric methodologies for the determination of several natural and artificial radionuclides (90Sr, 210Pb y 226Ra), alpha and beta emitters, whose determination in the different compartments of the environment is justified to a large extent to their features as natural tracers and to their high radiotoxic potential.