in Poland and Baltic Sea environment

Radionuclides existing in the environment, both natural and artificial, are accumulated in plants and animals and transferred through the trophic chain. That is the way which more and more wakes up to the interest of longterm impact on living organisms and the possibility of their transfer through feed way to human body. Basing on their high radiotoxicity to living organisms the alpha emitting radionuclides (Po, U, U, U, Pu, Pu) and beta emitting radionuclides (Fe, Ni, Pu) were chosen for the experiments [20]. In a nuclear power reactor, a stainless construction material contains iron and nickel which are neutron activated and give rise to the radioactive nuclides Fe and Ni. The Fe isotope (half-life time 2.686 y), which is a beta (electron capture) emitter and the Ni isotope (half-life time 100.1 y) which is also a beta particle emitter, are fairly important in radiological protection [2, 7]. Polonium and uranium belong to the natural uranium decay series starting from U, but Po fate depends on the preceding members of this series, especially on Ra and Pb [18]. The total amount of airborne Po depends directly on the amount of Pb supplied and formed in the atmosphere [8, 9]. Additional amounts of Po in the atmosphere are emitted directly from Radionuclides of iron (Fe), nickel (Ni), polonium (Po), uranium (U, U, U) and plutonium (Pu, Pu, Pu) in Poland and Baltic Sea environment Bogdan Skwarzec, Dagmara I. Strumińska, Alicja Boryło