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A quick, automated and portable system for the separation and determination of radiostrontium in aqueous samples, using Sr-resin and multi sequential flow injection analysis, has been developed. The concentrations of radioactive strontium were determined by flow scintillation counting, allowing for on-line and also on-site determination. The proposed system can determine radioactive strontium at industrial relevant levels without further modification using overall analysis time of less than 10 min per aqueous sample. The limit of the detection is 320 fg·g (1.7 Bq/g).
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http://dx.doi.org/10.3791/57722 | DOI Listing |
Anal Chim Acta
November 2025
State Key Laboratory of Loess Science, Shaanxi Key Laboratory of AMS Technology and Application, Xi'an AMS Center, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China. Electronic address:
Pu and Sr are highly important radionuclides in the environment, which can accumulate in the human body through the food chain and cause radiation exposure. With the continuous discharge of treated nuclear contamination water from the Fukushima Daiichi nuclear power plant, it is crucial to investigate and monitor the levels of Pu and Sr in seafood. However, it is still a challenge to determine Pu and Sr in seafood at environmental levels, owing to their extremely low concentrations, labor-intensive and time-consuming pre-treatment for large-sized samples.
View Article and Find Full Text PDFAnalyst
September 2025
State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
Recently, radioactive pollutants have garnered significant attention within the realms of environmental science and public safety, such as nuclear energy (, uranium), radiation therapy (, I), and earthquake monitoring (, radon), exerting multifaceted impacts on human health and ecosystems. Therefore, the development of accurate detection technologies for key radioactive elements is of paramount importance and is also an important guarantee for ensuring public safety and comprehensively promoting harmonious coexistence between humans and nature. Luminescent probes represent a class of detection methods for radioactive elements, characterized by high sensitivity, simplicity, and visualization.
View Article and Find Full Text PDFAppl Radiat Isot
August 2025
Institute of Physics, Federal University of Uberlândia, Uberlândia, MG, Brazil; Graduate Program in Biomedical Engineering, FEELT, Federal University of Uberlândia, Uberlândia, MG, Brazil.
Radioisotope Thermoelectric Generators (RTGs) are devices that convert heat from radioactive decay into electrical energy and are used in remote locations due to their low maintenance requirements. Various types of RTGs were produced with sources containing large amounts of Strontium-90, which require multiple layers of shielding materials. However, the lack of control and the ease of access to the source increase the biological risk in the event of a breach of the device.
View Article and Find Full Text PDFFront Public Health
August 2025
Department of Occupational Health and Radiation Protection, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, Zhejiang, China.
Objective: This work aims to assess the impact of three nuclear power plants (NPPs) in Zhejiang Province on the levels of Sr in surrounding seafood, and to evaluate the associated health risks, providing a scientific basis for operational monitoring and contributing essential baseline data for nuclear emergency preparedness.
Methods: From 2021 to 2023, the specific activities of Sr in five types of seafood (fish, shrimp, mussels, crabs, and algae) were monitored in the three NPPs, compared with Zhoushan City, which has no NPP, and the annual effective dose (AED) was estimated.
Results: The results show that the mean specific activities of Sr in fish, shrimp, mussels, crabs, and algae around the NPPs were found to range from 0.
Appl Radiat Isot
November 2025
Hot Laboratories Center, Egyptian Atomic Energy Authority, P.O. 13759, Inshas, Cairo, Egypt.
Strontium (Sr) was selected as a non-radioactive surrogate for the high-risk radionuclide Sr due to their environmental and chemical similarities, enabling the safe evaluation of long-term immobilization strategies. This study investigates the potential of alkali-borosilicate glasses (ABS) synthesized from industrial waste glass grit as a sustainable and durable waste form for Sr immobilization. The structural integrity and degradation behavior of Sr-loaded ABS glass samples were examined under short-term leaching and harsh conditions.
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