![]() ![]() And it’s a huge relief that it was found, given how. “But caesium-137 has a half-life of about 30 years, meaning that the capsule will be somewhat radioactive for the next 300 years. The capsule, which contains Caesium-137, was found to be missing six days ago after a long journey by truck in the state of Western Australia. “In that case, if the capsule is never found, it will not contaminate or transfer radioactivity into the surrounding soil. It is normally a sealed source - meaning, if it is not broken, it will not contaminate the soil or environment. Caesium-137 concentrations in Finnish fungiAbstractMore than 2000 samples of edible fungi species have been analysed in Finland since the Chernobyl accident. The procedure described in the following is suitable for determining the activity concentration of caesium-137 (Cs-137) in seawater according to the IMIS. ![]() This is equivalent to the amount of radiation involved when receiving a CT scan of the head - but double the effective dose recommended for the public by the International Commission on Radiological Protection.ĭr Deb added: “The radiation capsule contains caesium-137. The chemical element caesium was discovered in a Bavarian mineral spring by Bunsen and Kirchhoff in 1860 (Avery 1996).It is a Group I alkali metal present in solution as the free hydrated monovalent cation Cs + with little or no tendency to form soluble complexes in the soil with chemical properties similar to potassium and rubidium. In fact, explained medical physicist Dr Pradip Deb of the Royal Melbourne Institute of Technology, someone standing within a metre of the missing capsule for an hour would likely receive a two millisievert dose.
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