131I is one of the most significant gaseous fission products in a nuclear power plant. Because of its high volatility at room temperature, iodine can be easily inhaled by radiation workers following release of radioiodine into the atmosphere. The thyroid gland is the critical organ for iodine uptake and is subject to radioiodine carcinogenesis. Hence, monitoring systems are provided in nuclear power plants to sample and evaluate ambient air for gaseous radioiodine content. Due to a highly preferential retention efficiency for iodine gas compared to noble gases, silver zeolite cartridges are typically used in nuclear power plants to adsorb gaseous iodine for sampling purposes. To obtain accurate measurements, preparation of a proper calibration standard to simulate the gaseous radioiodine distribution in the cartridge is essential. This project developed a silver zeolite cartridge calibration standard that uses sodium iodide solution to simulate gaseous iodine distribution. This calibration standard appears to satisfactorily simulate the gaseous radioiodine distribution in the silver zeolite cartridge.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1097/01.HP.0000203812.30182.7b | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Antimicrobial and Oxidative Activities of Different Levels of Silver-Exchanged Zeolites X and ZSM-5 and Their Ecotoxicity.
Pharmaceuticals (Basel)
November 2024
Faculty of Physics, Sofia University "St. Kliment Ohridski", 5 James Bourchier Blvd, 1164 Sofia, Bulgaria.
Objectives: The antimicrobial, oxidative activities, and ecotoxicity of synthesized silver-loaded zeolites (X and ZSM-5(MFI), Si-to-Al ratios 12 and 25) were studied, linking antimicrobial properties to material structure and released active silver species.
Methods: The materials were characterized by SEM, EDX, TEM, and XRPD. All materials, with a silver content of 1-3%wt for the Ss and about 35%wt for the X-zeolites, were tested against and .
Synthesis, photocatalytic activity for tetracycline degradation under visible light, and kinetic study of Ag/AgCl/ZIF-11 nanocomposite.
Environ Sci Pollut Res Int
January 2025
Department of Nanotechnology, Faculty of New Sciences and Technologies, Semnan University, Semnan, 35131-19111, Iran.
For the first time, Ag/AgCl/zeolitic imidazolate framework-11 nanocomposite (Ag/AgCl/ZIF-11) as photocatalyst was synthesized and investigated on tetracycline (TC) degradation under visible light. ZIF-11 (Z), Ag/AgCl (A), and four composites (AZ, AZ, AZ, AZ) were made and characterized by XRD, FTIR, Raman, BET, SEM, EDS, XPS, and DRS analysis. The characteristic peaks of ZIF-11 and Ag were observed at 4.
View Article and Find Full Text PDFManipulation and Theoretical Modeling of the Luminescence Performance of Silver Clusters in LTA Zeolites by Adjusting Extra-framework Cations.
Inorg Chem
December 2024
School of Materials Science and Engineering, Tongji University, Shanghai 201804, China.
Luminescent silver clusters that are confined inside porous zeolites have attracted great research interest due to the combined advantages of high quantum yield, tunable emission, excellent chemical stability, and desirable adoption ability of this micronano-composite. In this research, a series of Ag-exchanged R-LTA/Ag (R = Li, Na, K) zeolites were synthesized, in which the silver clusters showed blue-shifted excitation in the UV region, red-shifted emission in the visible region, and decreased emission intensity when taking Li, Na, and K as the extra-framework cations, respectively. The [Ag(HO)R-sod] ( = 2, 4; R = Li, Na, K) structures were constructed, and the TD-DFT method was further carried out to study the influence of extra-framework cations on the luminescence performance of [Ag] clusters, in which the substitution of Al for Si and the reasonable hydrate levels were both taken into consideration.
View Article and Find Full Text PDFIn Vivo Test to Evaluate the Cytotoxicity and Genotoxicity of Natural Zeolite (NZ) Functionalized with Silver Nanoparticles (NZ-AgNPs) on Erythrocytes of Yellowtail Tetra Fish Astyanax lacustris.
Biol Trace Elem Res
November 2024
Graduate Program of Environmental Biotechnology, Department of Biotechnology, Genetics and Cell Biology, State University of Maringá, Maringá, Paraná, Brazil.
Silver nanoparticles (AgNPs) have unique properties such as chemical stability, malleability, flexibility, high electrical and thermal conductivity, and catalytic activity, making them suitable for various applications. However, they also pose potential toxicity and environmental contamination risks. Natural zeolites (NZs) are considered excellent inorganic support for reducing the toxicity of AgNPs.
View Article and Find Full Text PDFExploring the Efficacy of pH-Responsive Vancomycin/Ag/ZIF-8 Nanoparticles Modified with Hyaluronic Acid for Enhanced Antibacterial Therapy and Wound Healing.
ACS Appl Mater Interfaces
December 2024
Key Laboratory of Luminescence Analysis and Molecular Sensing (Ministry of Education), College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
This study introduces a novel type of metal-organic framework material, specifically zeolitic imidazolate framework-8 (ZIF-8), that is integrated with silver nanoparticles and further enhanced by incorporating vancomycin (Van) to create a composite named as Van/Ag/ZIF-8. This composite demonstrates a potent and smart antimicrobial effect due to its ability for releasing silver ions and Van in a controlled manner, especially in the microacidic conditions surrounding bacterial cells. Furthermore, we used hyaluronic acid to modify Van/Ag/ZIF-8, resulting in a composite denoted as Van/Ag/ZIF-8@HA.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!