An analysis of naturally occurring radionuclides and 137Cs in the soils of urban areas using gamma-ray spectrometry

Vukašinović, Ivana; Todorović, Dragana; Životić, Lj.; Kaluđerović, Lazar; Đorđević, Aleksandar

doi:10.1007/s13762-017-1467-z

Cited by 17 publications

(10 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ob tained re sults are in agree ment with the re sults re ported in the re gion and world wide [17,[19][20][21][22][23]. A wide range of radionuclides' con tent was found in all groups of sam ples, which leads to a large spread of val ues around mean value (large stan dard de vi a tion).…”

Section: Re Sults and Discussionsupporting

confidence: 84%

Radionuclides’ content in forest ecosystem located in southwestern part of Serbia

et al. 2021

View full text Add to dashboard Cite

Forests, with a large coverage of lands area, represent important ecosystem. They have greater ability to absorb atmospheric pollutant, including radionuclides compared to other vegetation types. Thus it is important to monitor radionuclides concentration in forest ecosystems. The results of the first gamma-spectrometric measurements in 16500 ha large region of South-western Serbia are presented. It is investigated activity concentrations of 40K, 137Cs and 210Pb in different deciduous and evergreen trees in the region. For all investigated isotopes, it was observed tendency that the smallest activity concentrations in average were found in tree stem, than in leaves, while the highest ones were in soil. Statistical analysis did not show any differences between activity concentrations of leaves and needles, showing that both leaves and needles could be equally well used as a biomonitors.

show abstract

Section: Re Sults and Discussionsupporting

confidence: 84%

Radionuclides’ content in forest ecosystem located in southwestern part of Serbia

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The longer experiment, the more accurate spectrum and thus better assessment of the radioactivity concentration. Typical time e.g., for soil radioactivity measurements varies from several up to 72 h, see [20,[36][37][38].…”

Section: Discussionmentioning

confidence: 99%

Assessment of the Natural Radioactivity of Polish and Foreign Granites Used for Road and Lapidary Constructions in Poland

et al. 2020

View full text Add to dashboard Cite

The measurements of the specific activity of natural radioactive isotopes of radium (226Ra), thorium (232Th) and potassium (40K) in chosen samples of imported (China, Finland, Spain, India, Sweden) and Polish (Izerski, Karkonosze, Siedlimowicki, Strzegomski, Strzelinski) granites were performed. The measurements were carried out with 2 × 2” NaI(Tl) scintillation detector. The measured specific activity on natural radioactive isotopes were within the following ranges: 5.8–312 [Bq kg−1], 5.5–189 [Bq kg−1] and 109–1590 [Bq kg−1] for 226Ra, 232Th and 40K, respectively. Obtained concentrations of radioactive isotopes allowed to perform the analysis of the exposure of the humans from the ionizing radiation emitted by the granites. The determination of the exposure consisted in the calculation of absorbed gamma dose rate (D) [nGy h−1] for each sample, which fell in the range between 20 and 511 [nGy h−1], annual effective dose rate (AED) [mSv year−1] ranging between 0.10 and 2.50 [mSv year−1], radium equivalent activity (Raeq) [Bq kg−1] with values between 22 and 570 [Bq kg−1], external and internal hazard indices (Hex) and (Hin) falling in the ranges 0.06−1.53 and 0.08–2.41 respectively, as well as gamma (Iγ) and alpha (Iα), representative level indices with values 0.08–2.0 and 0.029–1.56, respectively. Moreover, obtained results were compared with the international standard values given by the European Commission (EC), the United Nations Scientific Committee on the Effects of Atomic Radiation given in UNSCEAR Reports, and the results of research from other laboratories.

show abstract

“…Additionally, an isotropically distributed cylindrical source of 137 Cs has been placed in the ground, at a depth of 20 cm; the latter value represents a mean typical depth of radiocasium deposition in soil after its release as a consequence of a nuclear accident [48]. We have chosen to use this specific value for the deposition depth of 137 Cs in all our measurements, since many fundamental studies about the vertical distribution of this key artificial radionuclide in the environment show its biggest concentrations in the topsoil layers, especially above the depth of 20 cm [5,49,50]. The content of this radionuclide in soil is influenced by vertical migration due to the physical processes of diffusion, convection transfer with the soil moisture, and migration through the roots of plants.…”

Section: Mcnp Setting For the Simulations Of Our Studymentioning

confidence: 99%

Monte Carlo Simulation-Based Calculations of Complex DNA Damage for Incidents of Environmental Ionizing Radiation Exposure

et al. 2021

View full text Add to dashboard Cite

In this paper, we present a useful Monte Carlo (MC)-based methodology that can be utilized to calculate the absorbed dose and the initial levels of complex DNA damage (such as double strand breaks-DSBs) in the case of an environmental ionizing radiation (IR) exposure incident (REI) i.e., a nuclear accident. Our objective is to assess the doses and complex DNA damage by isolating only one component of the total radiation released in the environment after a REI that will affect the health of the exposed individual. More specifically, the radiation emitted by radionuclide 137Cs in the ground (under the individual’s feet). We use a merging of the Monte Carlo N-Particle Transport code (MCNP) with the Monte Carlo Damage Simulation (MCDS) code. The DNA lesions have been estimated through simulations for different surface activities of a 137Cs ground-based γ radiation source. The energy spectrum of the emitted secondary electrons and the absorbed dose in typical mammalian cells have been calculated using the MCNP code, and then these data are used as an input in the MCDS code for the estimation of critical DNA damage levels and types. As a realistic application, the calculated dose is also used to assess the Excess Lifetime Cancer Risk (ELCR) for eight hypothetical individuals, living in different zones around the Chernobyl Nuclear Power Plant, exposed to different time periods at the days of the accident in 1986. We conclude that any exposition of an individual in the near zone of Chernobyl increases the risk of cancer at a moderate to high grade, connected also with the induction of complex DNA damage by radiation. Generally, our methodology has proven to be useful for assessing γ rays-induced complex DNA damage levels of the exposed population, in the case of a REI and for better understanding the long-term health effects of exposure of the population to IR.

show abstract

An analysis of naturally occurring radionuclides and 137Cs in the soils of urban areas using gamma-ray spectrometry

Cited by 17 publications

References 23 publications

Radionuclides’ content in forest ecosystem located in southwestern part of Serbia

Radionuclides’ content in forest ecosystem located in southwestern part of Serbia

Assessment of the Natural Radioactivity of Polish and Foreign Granites Used for Road and Lapidary Constructions in Poland

Monte Carlo Simulation-Based Calculations of Complex DNA Damage for Incidents of Environmental Ionizing Radiation Exposure

Contact Info

Product

Resources

About