A combined DGT - DET approach for an in situ investigation of uranium resupply from large soil profiles in a wetland impacted by former mining activities

Abstract

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Environmental Chemistry of Radionuclides : Open Questions and Perspectives

“…At a much larger spatial scale (few cm), the implementation in situ of DGT (Diffusive Gradient in Thin film) and DET (Diffusive Equilibrium in Thin film) in wetlands impacted by former mining activities in the French Massif Central region provides a vertical mapping of Nat U gradient. The depth profiles with fairly good spatial resolution (a few cm) show the correlation with the soil nature, the organic content matter, all factors combined with the history of the site [44] . In the Nice radiochemistry laboratory, a large program was launched in 2000 by G. Barci‐Funel and H. Michel to investigate the fallout from the Chernobyl accident in the Boréon sector, located in the Alpes‐Maritimes mountains, less than 100 km North of Nice (Alpes Maritimes, France).…”

“…The depth profiles with fairly good spatial resolution (a few cm) show the correlation with the soil nature, the organic content matter, all factors combined with the history of the site. [44] In the Nice radiochemistry laboratory, a large program was launched in 2000 by G. Barci-Funel and H. Michel to investigate the fallout from the Chernobyl accident in the Boréon sector, located in the Alpes-Maritimes mountains, less than 100 km North of Nice (Alpes Maritimes, France). The study zone was an alpine wetland and surroundings, which consisted of a small lake, a clearing and a steep catchment in which MTR from nuclear test fallout and the Chernobyl accident are still detectable: from nuclear weapon tests ( 238,239 + 240 Pu and 241 Am) and from the Chernobyl nuclear power plant accident ( 137 Cs).…”