有效富集和检测β -活性Rn-222衰变产物的样品制备

IF 2.8 4区生物学

3 Biotech Pub Date : 2022-09-02 DOI:10.26565/2312-4334-2022-3-19

G. Onyshchenko, Ivan I. Yakymenko, O. Shchus, Anatoliy Lokha

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引用次数: 0

摘要

介绍了样品的制备方法和β -放射性气溶胶(氡-222在空气中的衰变产物)浓度的实验测量结果。实验设备包括一个静电气溶胶收集器和一个基于PMT的时间谱仪，带有一个塑料闪烁体和威尔金森ADC。气溶胶在铝箔上的积累持续了大约12个小时。在0 ~ 300分钟的时间间隔内测量了累积气溶胶的活度。在时间分析仪模式下使用光谱仪、所提出的气溶胶蓄能器以及处理累积光谱的方法，使得与基于空气过滤器的收集方法相比，可以提高辐射计的灵敏度。将时间谱开发程序应用于组成成分，可以可靠地建立在室内记录的气溶胶与氡-222:Po-218, Pb-214, Bi-214的β活性衰变产物之间的联系。

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Sample Preparation for the Effective Accumulation and Detection of the Beta-Active Rn-222 Decay Products

The sample preparation method and the results of experimental measurements of the concentration of beta-radioactive aerosols (the decay products of Radon-222 in the air) are presented. The experimental equipment includes an electrostatic aerosol collector and a time spectrometer based on the PMT with a plastic scintillator and Wilkinson’s ADC. The accumulation of aerosols on the foil lasted for about 12 hours. The activity of accumulated aerosols was measured in the time interval of 0 to 300 minutes. The use of the spectrometer in the time analyzer mode, the proposed aerosol accumulator, and the method of processing the accumulated spectrum makes it possible to increase the sensitivity of the radiometer in comparison with the collection method based on air filters. Applying the time‑spectrum development procedure to the constituent components makes it possible to reliably establish the connection of aerosols registered in the room with β‑active decay products of radon-222: Po-218, Pb-214, Bi-214.

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来源期刊

3 Biotech BIOTECHNOLOGY & APPLIED MICROBIOLOGY-

自引率

0.00%

发文量

314

期刊介绍： 3 Biotech publishes the results of the latest research related to the study and application of biotechnology to: - Medicine and Biomedical Sciences - Agriculture - The Environment The focus on these three technology sectors recognizes that complete Biotechnology applications often require a combination of techniques. 3 Biotech not only presents the latest developments in biotechnology but also addresses the problems and benefits of integrating a variety of techniques for a particular application. 3 Biotech will appeal to scientists and engineers in both academia and industry focused on the safe and efficient application of Biotechnology to Medicine, Agriculture and the Environment.