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1.
Int J Biometeorol ; 65(1): 69-83, 2021 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31955264

RESUMEN

As an inert radioactive gas, 222Rn could be easily transported to the atmosphere via emanation, migration, or exhalation. Research measurements pointed out that 222Rn activity concentration changes during the winter and summer months, as well as during wet and dry season periods. Changes in radon concentration can affect the atmospheric electric field. At the boundary layer near the ground, short-lived daughters of 222Rn can be used as natural tracers in the atmosphere. In this work, factors controlling 222Rn pathways in the environment and its levels in soil gas and outdoor air are summarized. 222Rn has a short half-life of 3.82 days, but the dose rate due to radon and its radioactive progeny could be significant to the living beings. Epidemiological studies on humans pointed out that up to 14% of lung cancers are induced by exposure to low and moderate concentrations of radon. Animals that breed in ground holes have been exposed to the higher doses due to radiation present in soil air. During the years, different dose-effect models are developed for risk assessment on human and non-human biota. In this work are reviewed research results of 222Rn exposure of human and non-human biota.


Asunto(s)
Contaminantes Radiactivos del Aire , Monitoreo de Radiación , Radón , Contaminantes Radiactivos del Aire/análisis , Biota , Humanos , Radón/análisis , Hijas del Radón/análisis
2.
J Environ Monit ; 14(1): 127-37, 2012 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-22072061

RESUMEN

The specific activities of natural radionuclides ((40)K, (226)Ra and (232)Th) and Chernobyl-derived (137)Cs were measured in soil profiles representing typical soil types of Belgrade (Serbia): chernozems, fluvisols, humic gleysols, eutric cambisols, vertisols and gleyic fluvisols. The influence of soil properties and content of stable elements on radionuclide distribution down the soil profiles (at 5 cm intervals up to 50 cm depth) was analysed. Correlation analysis identified associations of (40)K, (226)Ra and (137)Cs with fine-grained soil fractions. Significant positive correlations were found between (137)Cs specific activity and both organic matter content and cation exchange capacity. Saturated hydraulic conductivity and specific electrical conductivity were also positively correlated with the specific activity of (137)Cs. The strong positive correlations between (226)Ra and (232)Th specific activities and Fe and Mn indicate an association with oxides of these elements in soil. The correlations observed between (40)K and Cr, Ni, Pb and Zn and also between (137)Cs and Cd, Cr, Pb and Zn could be attributed to their common affinity for clay minerals. These results provide insight into the main factors that affect radionuclide migration in the soil, which contributes to knowledge about radionuclide behaviour in the environment and factors governing their mobility within terrestrial ecosystems.


Asunto(s)
Monitoreo de Radiación , Contaminantes Radiactivos del Suelo/análisis , Suelo/química , Radioisótopos de Cesio/análisis , Radioisótopos de Cesio/química , Cinética , Radioisótopos de Potasio/análisis , Radioisótopos de Potasio/química , Radio (Elemento)/análisis , Radio (Elemento)/química , Serbia , Contaminantes Radiactivos del Suelo/química , Torio/análisis , Torio/química
3.
Radiat Prot Dosimetry ; 168(1): 111-5, 2016 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-25693601

RESUMEN

The activity concentrations of natural radionuclides ((40)K, (210)Pb, (210)Po, (226)Ra and (228)Ra) in 17 most frequently used cigarette brands in Serbia and corresponding effective doses due to smoke inhalation are presented. The mean annual effective doses for (210)Pb and (210)Po were estimated to be 47.3 and 724 µSv y(-1) for (210)Pb and (210)Po, respectively. Serbia currently has the highest smoking rate in the world. The results of this study indicate the high contribution of the annual effective dose due to smoke inhalation to the total inhalation dose from natural radionuclides. The more effective implementation of actions for reducing smoking prevalence in Serbia is highly needed.


Asunto(s)
Nicotiana/química , Radioisótopos/análisis , Productos de Tabaco/análisis , Contaminación por Humo de Tabaco/análisis , Adolescente , Adulto , Contaminantes Radiactivos del Aire/análisis , Rayos gamma , Humanos , Exposición por Inhalación/análisis , Radioisótopos de Plomo/análisis , Polonio/análisis , Radioisótopos de Potasio/análisis , Dosis de Radiación , Radio (Elemento)/análisis , Serbia , Fumar/efectos adversos
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