Abstract
Various anthropogenic sources contribute to the presence of americium and curium isotopes in environmental samples. Incomplete radiochemical separations led to electrodeposited sources containing stable element impurities increasing auto-absorption effects. Other radioactive elements, such as 227Ac and its daughters, interfered with 241Am and 243,244Cm emissions. These impurities are now completely eliminated using a Tru-Spec® column. Very low levels of 241Am and 243,244Cm in environmental samples (i.e. algae, mussels, sediment, etc.) from the Channel and the Rhône river, including its estuary, were investigated using a routine radiochemical process and measurement at levels as low as achievable with state of the art measuring technology.
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