Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: plutonium

Sortuj według:

Ogranicz wyniki do:

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Polonium, uranium and plutonium radionuclides in aquatic environment of Poland and Southern Baltic

100%

Skwarzec B.

Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline

2009

tom 13 part II

In the paper were presented the results of study for determination of natural (polonium 210Po, uranium 234U and 238U) and artificial (plutonium 238Pu, 239+240Pu and 241Pu) alpha radionuclides in aquatic environment of Poland and southern Baltic Sea as well as the recognition of their accumulation in marine trophic chain. The obtained results indicated that Vistula and Odra as well as Rega, Parsęta and Słupia are important sources of analyzed radionuclides in southern Baltic Sea. Total annual runoff of polonium, uranium and plutonium from Vistula, Odra and Pomeranian rivers to the Baltic Sea was calculated as about 95 GBq of 210Po, 750 GBq of 234+238U and 160 MBq of 238+239+240Pu. Investigation on the polonium 210Po, uranium 234U and 238U, as well as and plutonium 238Pu, 239+240Pu and 241Pu. concentration in Baltic biota revealed that these radionuclides, especially polonium and plutonium, are strongly accumulated by some species. The results indicate that the Baltic organisms accumulate polonium and plutonium from environment and the bioconcentration factors (BCF) range from 25 to 27 000. The Baltic Sea algae, benthic animals and fish concentrate uranium only to a small degree. In Baltic sediments, the concentration of uranium increases with core depth and it is connected with the diffusion of 234U, 235U and 238U from sediments via intersticial water to bottom water. The values of 234U/238U activity ratio in the sediments indicated that the possible reduction process of U(VI) to U(IV) and the removing of autogenic uranium from seawater to sediments in the Gdańsk Deep and Bornholm Deep constitutes a small part only.

Concentration of 137Cs, 40K, 238Pu and 239plus240Pu radionuclides and some heavy metals in soil samples from two main valleys from Tatra National Park

100%

Kubica B., Mietelski J. W., Golas J., Skiba S., Tomankiewicz E., Gaca P., Jasinska M., Tuteja-Krysa M.

Polish Journal of Environmental Studies

2002

tom 11

nr 5

This paper presents the results of determinations of radiocesium and plutonium activity concentrations and some heavy metals in soil samples from two main Tatra Valleys: Kościeliska and Rybi Potok Valley. The results were obtained during 2001. It has been found that the content of 137Cs and 239+240Pu is much higher at altitudes over 1300 m asl.

Polonium, uranium and plutonium in the Southern Baltic Sea

100%

Skwarzec B.

Oceanological Studies

1997

tom 26

nr 1

Ograniczanie wyników

1 Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline

1 Oceanological Studies

1 Polish Journal of Environmental Studies

2 Skwarzec B.

1 Gaca P.

1 Golas J.

1 Jasinska M.

1 Kubica B.

1 Mietelski J. W.

1 Skiba S.

1 Tomankiewicz E.

1 Tuteja-Krysa M.

1 2009

1 2002

1 1997

Wyniki wyszukiwania

Polonium, uranium and plutonium radionuclides in aquatic environment of Poland and Southern Baltic

Concentration of 137Cs, 40K, 238Pu and 239plus240Pu radionuclides and some heavy metals in soil samples from two main valleys from Tatra National Park

Polonium, uranium and plutonium in the Southern Baltic Sea