Investigating uranium distribution in surface sediments and waters: a case study of contamination from the Juniper Uranium Mine, Stanislaus National Forest, CA

135Cs/137Cs isotopic composition of environmental samples across Europe: Environmental transport and source term emission applications

“…Large quantities of anthropogenic radioactivity have been released to the environment as a result of industrial nuclear activities [Kayzar et al, 2014;Markham et al, 1978;Napier 2014;Farris et al, 1996], medical isotope production [Bowyer et al, 2013;Johnson et al, 2015], accidents such as Chernobyl and Fukushima [UNSCEAR 2000;Buesseler et al, 2011], and nuclear weapons testing [Krey et al, 1976]. These releases have resulted in both high localized concentrations of anthropogenic radioactivity in the vicinity of some nuclear facilities/sites and very low levels of radioactivity dispersed both globally and regionally [UNSCEAR 2000, IAEA 2005, Krey et al, 1976.…”

Uranium decay daughters from isolated mines: Accumulation and sources

“…An abundant literature is available concerning the dispersion in the environment of natural radionuclides associated with uranium mining and milling activities (Neame et al 1982;Waite et al 1988;Mosinets, 1991;Bunzl et al 1994;Jurado Vargas et al 1997, McConnell et al 1998Fernandes et al 1998;Fernandes and Franklin, 2001;Fernandes et al 2006;Lozano, 2000Vera Tom e et al 2002;Carvalho et al 2007Carvalho et al , 2014Frostick et al 2008Frostick et al , 2011Kipp et al 2009;Mom cilovi c et al 2013;Blanco Rodríguez et al 2014;Kayzar et al 2014). However, only few published studies offer maps of radionuclide distribution (Dragovi c et al 2014;Erenturk et al 2014), in particular for uranium mining impacted environments (Vandenhove et al 2006;Bollh€ ofer et al 2006Bollh€ ofer et al , 2014.…”

Characterization of local geochemical anomalies in soils and stream sediments for improving land-use planning: A case study from Nisa, Portugal

“…An area for investigation was selected to make in situ gamma radiation measurements and to collect samples of soils and stream sediments. These sediments were deposited by a river that intersects the area of the local geochemical anomaly, and are used to supply a rockfill dam located downstream in Monte Claro (Rodriguez-Alvarez and Sanchez, 2000; Albanese et al, 2007; United States Army Corps of Engineers, 2007;Kayzar et al, 2014;Neiva et al, 2016). The anomaly is located close to the selected bulk sampling area and to the experimental leaching processing pilot plant that was built for a pre-feasibility mining study of Nisa ore deposit.…”

“…In the laboratory, the soil and sediment samples were homogenized, disaggregated, and quartered, following the usual procedures for preparation of samples (Kayzar et al, 2014). For determining metal and semi-metal elemental concentrations, an X-ray fluorescence spectrometer (Thermo Scientific Niton XL3p X-ray) was used, with measurements being made in ppm.…”