Measurement of radon activity in air using electrostatic collection to the Timepix detector

2013 ◽  
Vol 8 (03) ◽  
pp. C03011-C03011 ◽  
Author(s):  
F Mamedov ◽  
P Čermák ◽  
J Jakůbek ◽  
K Smolek ◽  
I Štekl ◽  
...  
Keyword(s):  
Radon Activity

scholarly journals Alpha Spectrometry of Radon Short-Lived Progeny in Drinking Water and Assessment of the Public Effective Dose: Results from the Cilento Area, Province of Salerno, Southern Italy

Materials ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 5840
Author(s):  
Enver Faella ◽  
Simona Mancini ◽  
Michele Guida ◽  
Albina Cuomo ◽  
Domenico Guida
Keyword(s):  
Drinking Water ◽  
Effective Dose ◽  
Health Hazard ◽  
Age Groups ◽  
Internal Exposure ◽  
Threshold Values ◽  
Campania Region ◽  
Radon Activity ◽  
National Regulation ◽  
South Italy

Radon is a naturally occurring radioactive gas present in the hydrosphere, lithosphere and atmosphere abundantly. Its ionizing radiation provides the largest human internal exposure by inhalation and ingestion to natural sources, constituting a serious health hazard. The contribution to total exposure is mainly due to inhalation, as ingestion by food or drinking water is typically very small. However, because of public health concerns, the contributions from all these sources are limited by regulations and remedial action should be taken in the event that the defined threshold values are overcome. In this paper, the first campaign of measurements to control the radon activity concentration in drinking water from public water supplies in the province of Salerno, south Italy, is described. The results represent a main reference for the area, as it was never investigated before. The purpose of this survey was to contribute to data compilation concerning the presence of radon-222 in groundwater in the Campania region and to determine the associated risk for different age groups. The maximum radon activity concentrations and the related total annual public effective dose turned out to be lower than the threshold values (100 Bq/l and 0.1 mSv/y, respectively) indicated by international guidelines and the national regulation, showing that the health risks for public consumption can be considered negligible.

Daily and seasonal variations in radon activity concentration in the soil air

2014 ◽  
Vol 160 (1-3) ◽  
pp. 222-225 ◽  
Author(s):  
M. M llerova ◽  
K. Holy ◽  
M. Bulko
Keyword(s):  
Seasonal Variations ◽  
Activity Concentration ◽  
Soil Air ◽  
Radon Activity

Radon protection in apartments by wireless radon activity concentration-controlled ventilation

2021 ◽  
Author(s):  
Jörg Dehnert ◽  
Diana Altendorf ◽  
Ralf Trabitzsch ◽  
Hannes Grünewald ◽  
Ralph Geisenhainer ◽  
...  
Keyword(s):  
Activity Concentration ◽  
Radon Activity ◽  
Controlled Ventilation

scholarly journals Measurement of radon activity in soil samples of some selected towns across the Lake Bosumtwi basin, Ghana

2012 ◽  
Vol 35 (2) ◽  
pp. 84
Author(s):  
Charles Kansaana ◽  
AndamBentil Aba ◽  
Eric KoteiT Addision ◽  
OscarKwaku Adukpo ◽  
EmmanuelOfori Darko ◽  
...  
Keyword(s):  
Soil Samples ◽  
Radon Activity

scholarly journals Indoor radon activity concentration and effective dose rates at schools and thermal spas of Ilgin

2020 ◽  
Vol 35 (4) ◽  
pp. 339-346
Author(s):  
Mehmet Erdogan ◽  
Murat Abaka ◽  
Kaan Manisa ◽  
Hasan Bircan ◽  
Coskun Kus ◽  
...  
Keyword(s):  
Radon Concentration ◽  
Primary Schools ◽  
Indoor Radon ◽  
Reference Level ◽  
Distribution Analysis ◽  
Indoor Radon Concentration ◽  
Radon Activity ◽  
Dose Rates ◽  
Basement Floor ◽  
Effective Doses

Indoor radon activity concentrations and radon doses on the ground floor and basement floor of 19 schools (kindergardens, primary schools, secondary schools, and high schools) and thermal spas of Ilgin district in Konya, have been measured using the AlphaGUARD PQ 2000PRO radon detector, for three days in the first half of 2016. According to the results, while the indoor radon concentration for only one location, in total, is above the Turkish action level of 400 Bqm?3, the values for 10 locations are above the reference level of 100 Bqm?3, recommended by WHO. The calculated annual effective doses for inhalation of the radon in indoor air were also found to be 0.26 ?Sv for the minimum and 4.36 ?Sv for the maximum. The parametric distribution analysis is also performed with 3-parameter Weibull distribution and some remarks are provided on radon concentration activity.

MEASUREMENT OF RADON ACTIVITY CONCENTRATION IN UNDERGROUND WATER OF BURETI SUB-COUNTY OF KERICHO COUNTY KENYA

2020 ◽  
Vol 192 (1) ◽  
pp. 56-60
Author(s):  
Charles K Rotich ◽  
Nadir O Hashim ◽  
Margaret W Chege ◽  
Catherine Nyambura
Keyword(s):  
Environmental Protection Agency ◽  
Activity Concentration ◽  
Underground Water ◽  
World Health ◽  
The European Union ◽  
Annual Dose ◽  
Radon Activity ◽  
A Value ◽  
The Us ◽  
Health Organization

Abstract The activity concentration of radon in underground water of Bureti sub-county was measured using liquid scintillating counter device. The average radon activity concentration in all the water samples was 12.41 Bql−1. The maximum and minimum activity concentrations of radon were 22.5 and 4.57 Bql−1, respectively. In total, 53% of the total samples analysed had radon concentration levels above the US Environmental Protection Agency-recommended limit of 11.1 Bql−1. The annual dose received by an individual as a result of waterborne radon was determined according to the United Nations Scientific Committee on the Effect of Atomic Radiation reports and was found to be 33.23 𝜇Svy−1. All the samples recorded a value <100 𝜇Svy−1 recommended by the World Health Organization and the European Union council.

Radioactivity in the gas pipeline network in Poland

2020 ◽  
Author(s):  
Pawel Jodlowski ◽  
Jakub Nowak ◽  
Jan Macuda
Keyword(s):  
Natural Gas ◽  
Radon Concentration ◽  
Activity Concentration ◽  
Gas Pipeline ◽  
Gamma Ray Spectrometry ◽  
Radon Progeny ◽  
Product Lines ◽  
Radon Activity ◽  
Pipeline Network ◽  
Wide Range

<p>The radiological risk in natural gas industry is mostly connected with radon (Rn-222) and its progeny: Po-218, Pb-214, Bi-214, Po-214 and Pb-210. The radon activity concentration in natural gas transported by gas pipelines varies in a wide range from dozens of Bq/m<sup>3</sup> to several thousand Bq/m<sup>3</sup> and mainly depends on the proximity of mines and geological structure of the deposit from which natural gas is extracted and transported. The radon progeny are ion metals, which are easily adsorbed on aerosols and deposited on the inner surfaces of gas pipe and other gas processing equipment such as scrubbers, compressors, reflux pumps, control valves and product lines creating thin radioactive films. Additionally, radon progeny together with aerosols (in contrast to radon) are retained on filters. In the aftermath of successive radioactive decay of short-lived radon progeny, long-lived Pb-210 is accumulated on filters.</p><p>             The paper presents the study of the Rn-222, Pb-210 connected with the transport of natural gas by the gas pipeline network in Poland. In the scope of the study the measurements of activity concentration of radon (Rn-222) in the gas samples (with alpha scintillation cells), radiolead Pb-210 in spent filter cartridges and dust samples collected from the gas pipeline network (with gamma-ray spectrometry) were performed.</p><p>             The results show that the Rn-222 activity concentration in natural gas varies from the detection limit of the applied method (30 Bq/m<sup>3</sup>) to around 1400 Bq/m<sup>3</sup>. Generally, the Rn-222 concentration in natural gas samples fluctuate around the mean radon concentration in the air of dwellings in Poland. The elevated radon activity concentrations in natural gas of several hundreds of Bq/m<sup>3</sup> and more are observed at locations where the gas directly comes from local gas mines or where there is a blend of the national gas with imported one. Relatively low radon concentration in imported natural gas is connected with the fact that this gas was imported from abroad. Therefore, the time elapsed from the gas extraction to the collection of samples was relatively long. In consequence, the concentration of Rn-222 in the gas significantly decreased due to radon decay (3.4 days). Additionally, the temporal variability (daily and weekly) of the radon activity concentration in the natural gas were assessed. The results show radon concentrations does not statistically change in daily or weekly time scale.</p><p>             The Pb-210 activity concentration in dust ("black-powder") from gas filters and spent filter cartridges is high and varies from 500 to 17000 Bq/kg and from 200 to 2900 Bq/kg respectively.</p>

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