Reconstructing the chronology of the natural and anthropogenic uranium isotopic signals in a marine sediment core from Beppu Bay, Japan.

The long-lived U isotopes, U and U, have been used increasingly in recent years as marine circulation tracers and for identifying sources of uranium contamination in the environment. The sedimentation histories of these two U isotopes in combination with natural U were reconstructed for an anoxic sediment core collected from Beppu Bay, Japan, in the western North Pacific Ocean showing good time resolution (less than 2.6 y/sample).

Tracing Atlantic water transit time in the subarctic and Arctic Atlantic using Tc-U-U.

The pathway and transport time of Atlantic water passing northern Europe can be traced via anthropogenic radioisotopes released from reprocessing of spent nuclear fuels at Sellafield (SF) and La Hague (LH). These reprocessing derived radioisotopes, with extremely low natural background, are source specific and unique fingerprints for Atlantic water. This study explores a new approach using Tc-U-U tracer to estimate the transit time of Atlantic water in the coast of Greenland.

Correction: Novel Sr analysis of environmental samples by Ion-Laser InterAction Mass Spectrometry.

Correction for 'Novel Sr analysis of environmental samples by Ion-Laser InterAction Mass Spectrometry' by Maki Honda , , 2022, , 2732-2738, https://doi.org/10.1039/D2AY00604A.

Understanding source terms of anthropogenic uranium in the Arctic Ocean - First U and U dataset in Barents Sea sediments.

This work reports the first dataset of U and U in sediment cores taken from the Barents Sea, with the aim to better understand the source terms of anthropogenic uranium in the Arctic region. Concentrations of U and U along with Cs, and U/U atomic ratio were measured in six sediment profiles. The cumulative areal inventories of U and U obtained in this work are (3.