Due to the lack of stable plutonium isotopes, and the high mobility as well as long half-life, plutonium is considered one of the most important radioelement in safety assessment of environmental radioactivity and nuclear waste management. A number of analytical methods have been developed over the past decades for determination of plutonium in environmental samples. The article discusses different analytical techniques and presents the results of plutonium isotopes determination by alpha spectrometry and accelerator mass spectrometry in environmental samples. The concentrations of plutonium isotopes in analyzed samples indicates its measurement is of great importance for environmental and safety assessment, especially in contaminated areas.
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http://dx.doi.org/10.1080/10590501.2013.782175 | DOI Listing |
Medicine (Baltimore)
December 2024
Xiangya School of Medicine, Central South University, Changsha, China.
This study investigated the potential association between uranium exposure and mortality from cerebrovascular diseases, with a focus on the mediating effects of lipid indicators. Employing recommended sampling weights to account for National Health and Nutrition Examination Survey' complex survey design, this analysis drew from data collected between 2005 and 2016. The study examined the impact of uranium on mortality from cerebrovascular diseases using various statistical approaches, including Cox regression to assess linear relationships within metal mixtures.
View Article and Find Full Text PDFJ Hazard Mater
December 2024
Qilian Alpine Ecology and Hydrology Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China.
Cryoconite is abundant in artificial radionuclides such as plutonium (Pu) and amounts of radioactive contaminants is stored in glaciers. Under global warming and glaciers rapid retreating, glaciers could be a second source for radioactive contaminants and the stored Pu isotopes could be released to the downstream areas through surface runoff. However, the knowledge and understanding on the migration behavior and cycling of Pu isotopes in the ice cap is quite limited.
View Article and Find Full Text PDFEnviron Pollut
November 2024
The Key Laboratory of Coastal and Island Development of Ministry of Education, School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, 210023, China.
ACS Environ Au
November 2024
Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550, United States.
Actinides are elements that are often feared because of their radioactive nature and potentially devastating consequences to humans and the environment if not managed properly. As such, their chemical interactions with the biosphere and geochemical environment, i.e.
View Article and Find Full Text PDFChemosphere
November 2024
Department of Mass Spectrometry, Institute of Nuclear Physics Polish Academy of Sciences, Ul. Radzikowskiego 152, 31-342 Kraków, Poland.
Cryoconite, granule-shaped debris found on the surface of glaciers, is known for trapping substantial quantities of pollutants such as radioactive nuclides and heavy metals. This study investigates contamination levels, sources and spatial variability of natural and artificial radioisotopes in cryoconite from Mittivakkat Gletsjer in southeast Greenland by determining the activity and atomic ratios of selected radionuclides. The maximum activity concentrations of artificial radioisotopes were 1129 ± 34 Bq kg for Cs, 3.
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