Hg and Po in consumed fish of the Tadjoura Gulf (Djibouti): Levels and human health risk assessment.

Hg and Po were measured in the muscle tissue of commercially important fish species collected in the main coastal cities of the Djiboutian coast (Tadjoura Gulf) to evaluate the potential risk associated with their consumption. The levels of Hg among the different species ranged from 0.02 to 1.

Fate of anthropogenic radionuclides (Sr, Cs, Pu, Pu, Pu, Am) in seawater in the northern Benguela upwelling system off Namibia.

A baseline study on anthropogenic radioactivity in the Namibian marine ecosystem, which is part of the northern Benguela upwelling system, known as one of the most productive ocean areas in the world, has been performed. A scientific cruise carried out in 2014 covering inshore and offshore areas, exhibiting different oceanographic features, has provided a basis for better understanding the distributions, ratios and inventories of six anthropogenic radionuclides (Sr, Cs, Pu, Pu, Pu and Am) in seawater. Although H was also measured, due to extremely low levels, its behaviour was not studied.

Tracing the upwelling process in the northern Benguela upwelling system (nBUS) by I.

New data on the presence of I in seawater in the Southern Hemisphere measured by Accelerator Mass Spectrometry (AMS) is presented. The samples were collected in 2014 along the Namibian coast during a cruise organised by the National Marine Information and Research Centre (NatMIRC), the national laboratories of the Ministry of Fisheries and Marine Resources (MFMR) in Namibia, and the IAEA Environment Laboratories (IAEA NAEL) in Monaco. The Benguela upwelling system is known as one of the most important marine upwelling regions in the world.

From radiometry to chronology of a marine sediment core: A Pb dating interlaboratory comparison exercise organised by the IAEA.

Laboratories from 14 countries (with different levels of expertise in radionuclide measurements and Pb dating) participated in an interlaboratory comparison exercise (ILC) related to the application of Pb sediment dating technique within the framework of the IAEA Coordinated Research Project. The laboratories were provided with samples from a composite sediment core and were required to provide massic activities of several radionuclides and an age versus depth model from the obtained results, using the most suitable Pb dating model. Massic concentrations of Zn and Cu were also determined to be used for chronology validation.

Presence of U and Np in a marine ecosystem: The northern Benguela Upwelling System, a case study.

The Benguela Upwelling System (BUS), off the south-western African coast, is one of the four major eastern boundary upwelling ecosystems in the oceans. However, this area has been overlooked in the field of environmental radioactivity. In this work, U and Np were collected off the coast of Namibia within the northern BUS.