Showing results for: radon concentration Articles
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Development of an economical radon-resistant construction technique that is applicable in national radon-reduction programmes
Radon is believed to be an important risk factor for lung cancer. Radon levels in some regions of Ramsar, a city in northern Iran, are up to 3700 Bq/m³. On the other hand, in the hot springs of Mahallat, in the central part of Iran, the indoor mean radon concentration in air is as high as 480 Bq/m³. In order to develop an economical radon-resistant construction technique, the radon-reducing ...
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3 things architects and engineers should know about Radon
1.New buildings: how can engineers and architects predict radon levels Testing is the only way to know a building’s radon levels. At present, there are no reliable, easily applied and inexpensive methods that could conclusively identify problem sites and predict if a new building will have high indoor radon levels. There are a lot of factors that cause elevated indoor radon concentration. ...
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Radon distribution in groundwater of Taiwan
Radon levels were surveyed in 517 monitoring wells constructed in five major groundwater areas of Taiwan. The radon concentration in groundwater samples varied in a wide range from below the detection limit of 18 pCi/L up to 1,100 pCi/L. A worldwide comparison of reported groundwater radon levels was conducted. Overall radon levels in Taiwan groundwater are relatively low compared to other ...
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Study Correlates Radon and Fracking
While some researchers implicate Marcellus Shale fracking for increased levels of radon in parts of Pennsylvania, others point to factors including soil moisture levels and improved home insulation. As researchers debate causes of increased radon level, residents must find ways to deal with it Radon is an odorless, tasteless, naturally occurring radioactive gas that forms from the decay of ...
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Radon Levels in Dwellings of New Mirpur Azad Kashmir, Sub-Himalayas, Pakistan
Radon concentrations were measured in kucha, semi-kucha and pucka houses located on the sedimentary rocks of Early Pleistocene-Pliocene Soan Formation, Pleistocene Mirpur conglomerate and recent deposits. The radon concentration was measured using CN 85 nuclear tracks etch detectors in box type dosimeters installed in the bedrooms and kitchens of the houses. It was found to vary from 14 ± 7 Bqm-3 ...
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The study of radon levels and absorbed dose in the staff and visitors of Alisadr Cave
CR-39 passive integrating Solid State Nuclear Track etch Detectors (SSNTDs) were used to measure atmospheric radon concentrations in the Alisadr show cave in Hamedan province, Iran. This was done in order to assess the risk from natural environmental radiation to tourists and cave guides. The study was carried out in 12 locations in the winter and spring periods. The mean radon concentration ...
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Measurement of indoor radon concentration in the dwellings of Western Haryana, India, for health risk assessment
Indoor radon studies have been carried out in 100 dwellings of 20 villages in western districts of Haryana, India, using the solidstate nuclear track detector technique. LR115 Type II films in the bare mode were exposed for 1 year on a quarterly basis to cover all the four seasons for the measurement of indoor radon levels. The annual average indoor radon concentration in the study area varies ...
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The investigation and measurement of the radon gas working level inside buildings in Rafsanjan
Radon gas and its daughters are radioactive and radiate alpha particles with high energy. These particles can cause DNA damage, which may or may not be properly repaired. Also, if these particles get into the lungs for a long period of time, they may damage the lungs' inner tissue. This is one of the most important causes of lung cancer after smoking. This paper presents a report on the ...
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Radon levels in different types of bottled drinking water and carbonated drinks in Iraqi markets
In the present work, radon concentration was measured for different types of bottled drinking water and carbonated drink samples that are available in Iraqi markets. Radon measurements were carried out using a RAD-7 electronic radon detector. Annual effective dose was also calculated. The measured radon concentration in samples of bottled drinking water ranged from 0.0354 to 0.248 Bq/l with a ...
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Is Radon & Radiation from Granite Countertops a Concern?
Over the past several years there have been numerous media reports about possible health concerns regarding granite countertops emitting radiation and radon gas into people’s homes and businesses. Granite’s durability and decorative appearance have made it a popular building material in many homes and buildings. Almost any type of rock could contain naturally occurring ...
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Short-term radon inhalation induces significant survival adaptive response in Balb/c mice
According to the World Health Organization (WHO), the main health hazard from high radon exposure is an increased risk of lung cancer. In this study, 60 male Balb/c mice (20-30 g) were randomly divided into four groups of 15 animals. The animals in the 1st group were kept for 72 hours in an ordinary cage while the 2nd, 3rd, 4th groups were kept in cages with artificially elevated levels of ...
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Woolsey Fire: Are You Breathing Toxic And Radioactive Air?
Preliminary Independent Radiation Test Results from US Nuclear Corporation from The Woolsey Fire and Santa Susana Field Lab Site After various complaints and talking with numerous concerned parents The Lancaster Weekly Review has ordered a commission in a preliminary study in order to finally answer some of the community’s concerns regarding potential toxic materials released from the ...
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10 easy fixes for indoor air
Colder temperatures are upon us, and most people keep windows and doors shut to keep the chill out. But in closed-off rooms and homes, indoor air contaminants build up over time. The problem? Poor air quality has been linked to health effects in everyone, especially infants, children, seniors and pets. We listed 10 easy ways to improve IAQ. 1. Open windows regularly Even if it gets very ...
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Radiological safety and environmental monitoring aspects of mining and processing of uranium ore at Jaduguda, India
Low–grade uranium ore is mined and processed in India since the early 1970s. To adhere to the regulatory compliance monitoring of external gamma level, radon and long–lived alpha activity of ore dust is carried out in uranium mines. Apart from this, surface contamination is also monitored in radiologically important areas of ore processing plant. Exposure of occupational workers is evaluated ...
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Measurement of Radon Exhalation Rate from Building Materials used in the southwest coastal region of India
This paper presents the results of a sample survey carried out to study the radon profile and radon exhalation rate in commonly used building materials used for construction of dwellings around high background areas of south India. Simultaneously, radon concentrations were also measured using passive detector techniques. Experimental procedure used for the measurement was the track etch ...
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Mitigation of workplace radon gas concentration using high–performance epoxy resin coating
The indoor radon gas released from concrete was measured using a 0.65 × 0.65 × 0.65 m fabricated concrete slab room, simulating a workplace. The indoor radon gas concentration was monitored, and the remediation method was examined. Radon concentrations were monitored using Radon Monitor Model 1023 from Sun Nuclear. Results show that average radon concentrations reached 111 Bq.m−3 before ...
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Relationship between radon concentration, ventilation rate and male infertility: a case study in Iraqi Kurdistan
The relationship between annual effective dose, ventilation rate and the rate of male infertility in selected locations in the Iraqi Kurdistan region was studied using the bedrooms of 124 homes of men whose fertilities were determined using a CR-39 nuclear track detector. The results show that there is an exponential relation between annual effective dose and the rate of male infertility, and ...
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Diurnal variation of the mixing-layer height and polonium concentration in the air
The Mixing Height (MH) is one of the most important parameters that characterise the range of the atmospheric turbulence. This parameter shows characteristic diurnal variation but cannot be measured immediately. Therefore, it is evaluated indirectly by measuring other quantities. The measurement of radon concentration in the atmospheric air is one of the methods using natural occurring ...
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Age-dependent annual effective dose estimations of 226Ra, 232Th, 40K and 222Rn from drinking water in Baling, Malaysia
Natural radioactivity and radon concentration were studied in drinking water samples from Baling area, Kedah, Malaysia, using HPGe and RAD-7 detectors, respectively. Average concentrations obtained for 226Ra, 232Th, 40K and 222Rn were 44.2 ± 3.9, 38.1 ± 5.0, 140.9 ± 10.6 mBq l−1 and 5.7 ± 0.68 Bq l−1, respectively. Cumulative annual effective doses due to ingestion of 226Ra, 232Th, 40K and ...
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Annual effective dose measurement from consumption of Dimeh Springs in the highest altitude region of Iran
Two of the main sources of public exposure from natural radioactivity are radium and radon, and their short-lived decay products. The aim of this study is to determine the concentration of these radionuclides in the mineral water resources of one of the highest-altitude regions (Zagros Mountains) in Chaharmahal and Bakhtiari Province, in the south-west of Iran, namely Dimeh Springs. Eighty ...
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