The aim of our research is to increase understanding the behaviour of radionuclides in the atmosphere and terrestrial environment. Our group has been work­ing in De­part­ment of Chem­istry since early 2000s. Al­to­gether we have al­most 50 years' ex­per­i­ence in en­vir­on­mental ra­dio­activ­ity, ra­di­oeco­logy and at­mo­spheric ra­dio­activ­ity.