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Advances in Environmental Radioactivity Monitoring and Measurement

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Environmental Sciences".

Deadline for manuscript submissions: 20 November 2025 | Viewed by 1038

Special Issue Editor


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Guest Editor
Department for Environment, Environmental Radioactivity and Radiological Surveillance Unit, CIEMAT Research Center of Energy, Environmental and Technology, Av. Complutense, 22, 28040 Madrid, Spain
Interests: environmental radioactivity; NORM; radiochemistry

Special Issue Information

Dear Colleagues,

Environmental radiological monitoring covers various aspects of physics, chemistry, and biology related to the assessment of impacts caused by natural and artificial radionuclides in the environment. The sources of radionuclides primarily originate from nuclear fuel cycle facilities, medicine, and industries generating NORM (naturally occurring radioactive material) waste. The analytical and measurement techniques employed to evaluate the impact of these facilities are based on the type of radionuclide to be determined. Radiochemical methods are based on classical chemical techniques such as selective precipitations, ion exchange resins, liquid–liquid extraction, and chromatographic extraction, among others. Measurements are conducted using detectors such as scintillation counters (ZnS(Ag), NaI(Tl), or liquid scintillation), continuous-flow proportional gas counters, or semiconductor detectors (HPGe and PIPS). Furthermore, chemical techniques such as ICP, ICP-MS, AAS, and AES enable the determination of radionuclides with long half-lives. This Special Issue aims to compile the latest advancements in measurement techniques and methodologies to assess the radiological impact of various facilities on the environment. Additionally, studies related to soil–plant transfer factors, radionuclide diffusion models in air, the quality control of measurements, and characterization studies of soils, waters, foods, and indicator organisms will be of great interest in this Special Issue.

Dr. José Antonio Suarez-Navarro
Guest Editor

Manuscript Submission Information

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Keywords

  • radioactivity in soils, waters, foods and air
  • radiological monitoring
  • environmental radioactivity
  • radiochemistry

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Published Papers (1 paper)

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Research

34 pages, 8577 KiB  
Article
Uranium Mineral Transport in the Peña Blanca Desert: Dissolution or Fragmentation? Simulation in Sediment Column Systems
by Victoria Pérez-Reyes, Rocio M. Cabral-Lares, Jesús G. Canche-Tello, Marusia Rentería-Villalobos, Guillermo González-Sánchez, Blanca P. Carmona-Lara, Cristina Hernández-Herrera, Fabián Faudoa-Gómez, Yair Rodríguez-Guerra, Gregorio Vázquez-Olvera, Jorge Carrillo-Flores, Ignacio A. Reyes-Cortés, Daniel Hernández-Cruz, René Loredo-Portales and María E. Montero-Cabrera
Appl. Sci. 2025, 15(2), 609; https://doi.org/10.3390/app15020609 - 10 Jan 2025
Cited by 2 | Viewed by 800
Abstract
The Sierra Peña Blanca (SPB) region in Chihuahua, Mexico contains a significant uranium deposit representing about 40% of the country’s reserves. Common uranium minerals in this area include uranophane, schoepite, and weeksite/boltwoodite, with several superficial occurrences. Mining activities in the 1980s left unprocessed [...] Read more.
The Sierra Peña Blanca (SPB) region in Chihuahua, Mexico contains a significant uranium deposit representing about 40% of the country’s reserves. Common uranium minerals in this area include uranophane, schoepite, and weeksite/boltwoodite, with several superficial occurrences. Mining activities in the 1980s left unprocessed uranium ore exposed to weathering, with potential transport towards Laguna del Cuervo. This study presents an experimental simulation of uranium transport in SPB sediments using three approaches: (i) a batch experiment to evaluate the ideal adsorption of (UO2)2+ by fine sediment; (ii) a column system fed with 569 mgU L−1 UO2(NO3)2 to simulate adsorption by different sediment particle sizes; (iii) a column system with an upper horizon of uranophane from the area, fed with deionized water, to simulate uranium weathering and transport in particulate material, determined by liquid scintillation counting, revealed that the clay fraction had the highest adsorption capacity for U. X-ray Absorption Fine Structure (XAFS) analysis at the U L3 edge confirmed the U(IV) oxidation state and the fittings of the extended XAFS spectra confirmed the presence of the uranophane group of minerals. X-ray tomography further corroborated the distribution of particulate minerals along the column. The results suggest that the primary transport mechanism in SPB involves the fragmentation of uranium minerals, accompanied by eventual dissolution and subsequent adsorption of U onto sediments. Full article
(This article belongs to the Special Issue Advances in Environmental Radioactivity Monitoring and Measurement)
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