黑山学校中的
Perko Vukotic1, Ranko Zekic2, Nikola Svrkota2
1Montenegrin Academy of Sciences and Arts, R. Stijovica, Podgorica, Montenegro.
Radiation protection dosimetry
|February 12, 2025
概括
在黑山的学校测量了 (222Rn) 水平. 地下层教室的度较高,可能使学生暴露于每年高的吸入剂量.
科学领域:
- 环境健康 环境健康
- 辐射保护 辐射保护
- 公共卫生 公共卫生
背景情况:
- (222Rn) 是一种天然存在的放射性气体,已知致癌物.
- 室内度升高对健康构成重大风险,特别是在教育环境中.
- 之前在黑山学校进行的评测是有限的.
研究的目的:
- 在黑山所有公立小学和中学全面评估室内度.
- 评估学生吸入的潜在有效年剂量.
- 确定需要缓解策略的学校和特定房间.
主要方法:
- 在345所小学和47所中学使用被动探测器进行持续的 (222Rn) 监测.
- 在2336个地下层教室/办公室和182个一楼房间进行了测量.
- 计算算术平均值 (AM),中位数 (MED) 和有效年剂量.
主要成果:
- 与一楼 (AM: 100 Bq/m3,MED: 65 Bq/m3) 的教室相比,地板教室的平均度更高 (AM: 276 Bq/m3,MED: 146 Bq/m3).
- 188所学校的房间超过300 Bq/m3,43所学校的房间超过1000 Bq/m3.
- 学生平均年有效剂量为0.66mSv,一些教室高达11mSv.
结论:
- 黑山学校存在严重的污染,特别是在地下层.
- 相当数量的教室超过了推的水平,需要进一步调查和减轻.
- 学生可能会接触到相当大的吸入剂量,突出了公共卫生干预的必要性.
更多相关视频
06:20Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
Published on: March 11, 2021
7.2K
07:52A Novel Technique for Raman Analysis of Highly Radioactive Samples Using Any Standard Micro-Raman Spectrometer
Published on: April 12, 2017
12.7K
相关概念视频
Biological Effects of Radiation
15.2K
All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...
15.2K
Positron Emission Tomography
4.0K
Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...
4.0K
Radioactive Decay and Radiometric Dating
33.0K
Radioactivity is a spontaneous disintegration of an unstable nuclide and is a random process, as all the nuclei in the sample do not decay simultaneously. The number of disintegrations per unit time is called the activity (A), which is directly proportional to the number of nuclei in the sample. The decay constant (λ) is an average probability of decay per nucleus in unit time.
33.0K
Nuclear Power
7.7K
Controlled nuclear fission reactions are used to generate electricity. Any nuclear reactor that produces power via the fission of uranium or plutonium by bombardment with neutrons has six components: nuclear fuel consisting of fissionable material, a nuclear moderator, a neutron source, control rods, reactor coolant, and a shield and containment system.
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
7.7K
Radiological Investigation II: MRI and Ventilation Perfusion Scan
97
Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
97
Isotopes and Radioisotopes
8.2K
In the early 1900s, English chemist Frederick Soddy realized that an element could have atoms with different masses that were chemically indistinguishable. These different types are called isotopes — atoms of the same element that differ in mass. Isotopes differ in mass because they have different numbers of neutrons but are chemically identical because they have the same number of protons. Soddy was awarded the Nobel Prize in Chemistry in 1921 for this discovery.
An isotope containing...
An isotope containing...
8.2K
