Lichens and mosses as polonium and uranium biomonitors on Sobieszewo Island.

In the study the activities of polonium Po and uranium U, U radionuclides in moss and lichen samples were determined using the alpha spectrometry. Different lichens and mosses were collected around the Sobieszewo Island (northern Poland) and investigated for potential use as biomonitors for Po and U deposition. Mosses and lichens have a high efficiency in capturing Po and U from atmospheric fallout. The obtained results showed that Po, U concentrations are changing in analyzed thallophytes samples depending on the type of thallus.