Temat: indoor radon - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The indoor radon survey in Serbian schools: can it reflect also the general population exposure?
Autorzy:: Žunić, Z. S.
Bossew, P.
Veselinović, N.
Bochicchio, F.
Carelli, V.
Vaupotič, J.
Čuknić, O.
Simović, R.
Vojinović, Z.
Kisić, D
Tollefsen, T.
Powiązania:: https://bibliotekanauki.pl/articles/148743.pdf
Data publikacji:: 2010
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: indoor radon
survey
school
Serbia
Opis:: A systematic indoor radon survey in elementary schools of Serbia is underway since 2008. Its current first phase covers all elementary schools in predominantly rural communities of Southern Serbia. The design of the survey, its implementation and the current state of its realization is shortly described. Part of this paper is devoted to discussion of the question if this survey could produce results representative also of the radon concentration in dwellings and of radon exposure of the general population, discussing some statistical aspects of representativity which arose during the work, namely, if the implementation leads to an unbiased estimate of the targeted quantities.
Źródło:: Nukleonika; 2010, 55, 4; 419-427
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Results of the 2015 national indoor radon intercomparison measurements in Serbia
Autorzy:: Forkapić, S.
Bikit, K.
Arsić, V.
Ilić, J.
Pantelić, G.
Živanović, M.
Powiązania:: https://bibliotekanauki.pl/articles/147750.pdf
Data publikacji:: 2016
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: charcoal canisters
indoor radon
interlaboratory comparison
Opis:: Results and conclusions of interlaboratory comparison of indoor radon in 2015 in Serbia are presented. The participants were three accredited laboratories from Serbia: Serbian Institute of Occupational Health “Dr Dragomir Karajović”, Laboratory for Radioactivity and Dose Measurements at the Faculty of Sciences, University of Novi Sad and Radiation and Environmental Protection Department, Vinča Institute of Nuclear Science. The laboratories make use of the same method for radon measurement, using charcoal canisters according to US Environmental Protection Agency (EPA) protocol 520/5-87-005. Calibration of detection efficiency was performed using EPA radium standard. Radon activity concentrations were determined on the basis of the intensity of short-living radon daughters, 214Bi and 214Pb, gamma lines. The results of intercomparison were evaluated by using the u-test, which was calculated according to the International Atomic Energy Agency criteria. In this paper, not only limitations but also the advantages and possibilities of application of this method for measuring levels of human exposure to radon are discussed
Źródło:: Nukleonika; 2016, 61, 3; 321-325
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Preliminary results of radon survey in thermal spas in V4 countries
Autorzy:: Műllerová, M.
Mazur, J.
Blahušiak, P.
Grządziel, D.
Holý, K.
Kovács, T.
Kozak, K.
Nagy, E.
Neznal, M.
Shahrokhi, A.
Powiązania:: https://bibliotekanauki.pl/articles/146825.pdf
Data publikacji:: 2016
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: indoor radon
thermal spas
thermal water
Opis:: Radon concentration was measured in 11 thermal spas in Visegrad countries (Czech Republic, Hungary, Poland, and Slovakia). The results showed that in 84% of spas radon activity concentration is less than 400 Bq·m–3. However, areas with radon activity concentration exceeding 1000 Bq·m–3 were found in the Czech Republic and Slovakia as well. Preliminary analyses indicated that the highest radon activities in spas were found in places with thermal pools. Radon concentration in waters used in spas ranged from 0.5 Bq/l to 384 Bq/l. The influence of radon activity concentration in water on radon activity in the air inside the spa was observed. It was found to increase indoor radon with increasing radon in the waters. Correlation with indoor radon and radon in water was more significant for baths and less significant for pool waters. In the cases filling of the bath from water taps, significantly contribute to the increased radon was observed in the pool and bath areas of the spa.
Źródło:: Nukleonika; 2016, 61, 3; 303-306
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Evaluation of radon risk for Białystok inhabitants regarding the type of town buildings
Autorzy:: Karpińska, M.
Kapała, J.
Szpak, A.
Mnich, Z.
Powiązania:: https://bibliotekanauki.pl/articles/148400.pdf
Data publikacji:: 2010
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: indoor radon
Białystok
mean annual concentration of radon
type of buildings
Opis:: Radon and its short-lived disintegration products are the most significant factors of exposure to ionizing radiation from natural sources. Białystok has the population of about 300,000 inhabitants in 100,460 flats in 16,282 houses. They are mostly one-family houses (about 80.7per cent) and two-family houses (8.2 per cent). It can be estimated that about 2/3 of the Białystok inhabitants live in the so-called “blocks of flats”. The study aimed at evaluation of the exposure to radon present in the flats. The integral method of trace detectors was used to measure radon concentration indoors. All values of the radon concentration were the mean annual values as they were obtained on annual exposure or were calculated and corrected to annual exposure based on shorter periods of time. Radon concentration distribution in flats of 3 housing estates in Białystok was analyzed. The effective dose of inhaled radon per a statistical inhabitant of Białystok (about 1.1 mSv) per year was calculated on the basis of mean values of radon concentration. Inhabitants of one-family houses obtained slightly higher annual doses – 1.4 mSv while the inhabitants of block of flats got lower annual doses – 0.8 mSv.
Źródło:: Nukleonika; 2010, 55, 2; 213-217
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Using a scale model room to assess the contribution of building material of volcanic origin to indoor radon
Autorzy:: Lucchetti, Carlo
Castelluccio, Mauro
Altamore, Matteo
Briganti, Alessandra
Galli, Gianfranco
Soligo, Michele
Tuccimei, Paola
Voltaggio, Mario
Powiązania:: https://bibliotekanauki.pl/articles/146125.pdf
Data publikacji:: 2020
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: building materials
indoor radon
indoor thoron
model room
natural radiation
radon
thoron exhalation rates
Opis:: In the frame of Radon rEal time monitoring System and Proactive Indoor Remediation (RESPIRE), a LIFE 2016 project funded by the European Commission, the contribution of building materials of volcanic origin to indoor radon concentration was investigated. First, total gamma radiation and related outdoor dose rates of geological materials in the Caprarola area (Central Italy) were measured to define main sources of radiation. Second, 222Rn and 220Rn exhalation rates of these rocks used as building materials were measured using an accumulation chamber connected in a closed loop with a RAD7 radon monitor. Among others, the very porous “Tufo di Gallese” ignimbrite provided the highest values. This material was then used to construct a scale model room of 62 cm × 50 cm × 35 cm (inner length × width × height, respectively) to assess experimental radon and thoron activity concentration at equilibrium and study the effects of climatic conditions and different coatings on radon levels. A first test was carried out at ambient temperature to determine experimental 222Rn and 220Rn equilibrium activities in the model room, not covered with plaster or other coating materials. Experimental 222Rn equilibrium was recorded in just two days demonstrating that the room “breaths”, exchanging air with the outdoor environment. This determines a dilution of indoor radon concentration. Other experiments showed that inner covers (such as plasterboard and different kinds of paints) partially influence 222Rn but entirely cut the short-lived 220Rn. Finally, decreases in ambient temperature reduce radon exhalation from building material and, in turn, indoor activity concentration.
Źródło:: Nukleonika; 2020, 65, 2; 71-76
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Configuration of the parameters for scanner-based track detector evaluation system
Autorzy:: Csordás, Anita
Tóth-Bodrogi, Edit
Kovács, Tibor
Powiązania:: https://bibliotekanauki.pl/articles/147714.pdf
Data publikacji:: 2020
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: background track density
CR-39
etching conditions
indoor radon
sensitivity for radon
Opis:: According to the new European Union Basic Safety Standards (EU-BSS), preparation of the National Radon Action Plan is obligatory for the Member States. One of the plan’s aims is to carry out an indoor radon survey to identify radon-prone areas. In the radon surveys, track detector methods are used. At the University of Pannonia (Veszprém, Hungary), a new scanner-based detector evaluation system has been developed. For the application of the new system, the selection of appropriate parameters is necessary. In this study, selection of the applied track detectors and setting of the etching conditions have been carried out. Two different types of allyl diglycol carbonate (ADC or CR-39) track detectors were investigated, taking into account the detector’s background and response during the exposure (determination of calibration factor). The Baryotrak’s background track density (0–1.5 tracksmm–2) was lower than that of the 0.8–4 tracksmm–2. The response of the Tastrak was higher, but the deviation of the calibration factor was much higher (1.2–5.3 × 10–3 tracksmm–2/(Bqdaym–3)) than in the case of the Baryotrak (1.4–2.8 × 10–3 tracksmm–2/(Bqdaym–3)). After the systematic review of the etching system, a new method was developed. For the determination of the optimal track diameter, the argon fluoride (ArF) laser was applied to create tracks with diameters in the range of 10–100 µ. The optimum track size was in the range of 40–60 µ. On this basis, new etching conditions were determined: 6.25 M NaOH solution, a temperature of 90 degree centigrade, and time period of 8 hours.
Źródło:: Nukleonika; 2020, 65, 2; 133-137
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Rapid estimation of environmental radioactivity surrounding Xiangshan uranium deposits, Jiangxi province, Eastern China
Autorzy:: Gan, N.
Cen, K.
Ye, R.
Li, T.
Powiązania:: https://bibliotekanauki.pl/articles/148900.pdf
Data publikacji:: 2018
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: gamma dose rate
indoor radon
water radon
cesium
annual effective dose
Xiangshan uranium deposit
Opis:: The surveys of terrestrial gamma dose rate, radon concentration indoor and in water and specific activity of radionuclides of soil were carried out in 14 villages and a town in Xiangshan uranium deposit and surrounding area, Jiangxi province, Eastern China, in 2017–2018, using a scintillator dosemeter, an ionization chamber and a high-purity germanium gamma spectrometer to study radiation status in these places after remediation. A radioactive hot spot was discovered in a village near the mining office, where specific activity of 238U, 226Ra, 232Th and 137Cs of soil was as high as 1433 ± 76 Bq/kg, 1210 ± 62 Bq/kg, 236 ± 13 Bq/kg and 17 ± 1.1 Bq/kg, respectively. The dose rate on a waste rock heap was about 2423 nGy/h. Approximately 50% of the houses in a village near the uranium mining site had radon concentrations that exceeded 160 Bq/m3 . There was a significant positive correlation between indoor radon concentration and outdoor gamma dose rate (R2 = 0.7876). The abnormal radon concentration was observed in a rising spring sample providing residents with tap water up to 127.1 Bq/l. Four tap water samples and three of five well water samples exceeded the limit of radon concentration of drinking water in China (11.1 Bq/l). The mean annual effective doses from gamma dose rate data were 0.86 mSv/y and 1.13 mSv/y for indoor radon. The study shows that there are some radioactively contaminated places surrounding the Xiangshan uranium mine. The local outdoor dose rate averages may be used to estimate local indoor radon concentrations.
Źródło:: Nukleonika; 2018, 63, 4; 113-121
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: The periodical changes the concentration of indoor radon
Okresowe zmiany stężenia radonu w budynkach
Autorzy:: Karpińska, M.
Mnich, Z.
Kapała, J.
Powiązania:: https://bibliotekanauki.pl/articles/340684.pdf
Data publikacji:: 2004
Wydawca:: Główny Instytut Górnictwa
Tematy:: radon
stężenie radonu w budynkach
dopuszczalna dawka promieniowania
concentration of indoor radon
permissible radiation dose
Źródło:: Prace Naukowe GIG. Górnictwo i Środowisko / Główny Instytut Górnictwa; 2004, 1; 88-89
1643-7608
Pojawia się w:: Prace Naukowe GIG. Górnictwo i Środowisko / Główny Instytut Górnictwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Radon Hazards in Relation to Elemental and Isotope Composition of the Geological Structures in the Lubelskie Voivodeship
Autorzy:: Gazda, L.
Połednik, B.
Czerwiński, J.
Kozak, K.
Mazur, J.
Grządziel, D.
Dudzińska, M.
Powiązania:: https://bibliotekanauki.pl/articles/123882.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: rocks
radon sources
emanations
radon exhalations
indoor environment
Opis:: The study involved investigation of the relationship between the radon concentrations in the ground air – and thus in the indoor air – and the geological structure of the Lubelskie Voivodeship (eastern Poland). Both passive and active methods were used for measuring the radon concentrations in coal, phosphate and chalk mines, caves, wells as well as indoor environments. The study also included elemental, uranium and lead isotope analyses of rocks. The performed research showed that Paleogene and Mesozoic sedimentary rocks rich in radionuclides are the sources of radon in the Lubelskie Voivodeship. In the case of the buildings located in proximity to such rocks, characterized by relatively high radon exhalations, radon remediation methods are recommended. Already at the designing stage of buildings, the measures which protect against the hazardous radon gas should be applied.
Źródło:: Journal of Ecological Engineering; 2018, 19, 2; 45-49
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Specific properties of a model of thoron and its decay products in indoor atmospheres
Autorzy:: Meisenberg, O.
Tschiersch, J.
Powiązania:: https://bibliotekanauki.pl/articles/148707.pdf
Data publikacji:: 2010
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: thoron
220Rn
radon
indoor model
decay products
air exchange
spatial distribution
Opis:: Whereas several models of indoor concentrations of radon and its decay products exist, mod els for the occurrence and spatial distribution of thoron (220Rn) and its decay products are lacking. This study highlights the specific properties of the thoron decay chain and presents their consequences for a thoron model. The short half-life of thoron results in an inhomogene ous spatial distribution, which is determined by diffusive and advective transport. The long half- -life of the decay product 212Pb accounts for a strong influence of air exchange on its overall concentration as well as on its unattached fraction. It could further be predicted that also the unattached part of 212Pb is distributed inhomogeneously. The theoretical structure of a thoron model, which can neglect the most short-lived decay products but must account for the influence of air exchange in a stronger way than it is the case for radon, results from these considerations.
Źródło:: Nukleonika; 2010, 55, 4; 463-469
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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