Radon measurements in some houses of Tsukuba science city, Japan

Matiullah,; Bashir, Amir; Kudo, K.; Yang, X.

doi:10.1016/0969-8078(93)90093-j

Cited by 23 publications

(14 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Being a noble gas, it has greater ability to migrate freely through soil underlying the houses and get trapped within closed rooms rising to elevated levels (Matiullah et al 1993;Rahman et al 2007a). A sustained radon exposure has been associated with an increase in the risk of lung cancer as reported by Smith (1988), Jacobi (1988) and Lubin (1999).…”

Section: Introductionmentioning

confidence: 87%

Determination of radon exhalation from granite, dolerite and marbles decorative stones of the Azad Kashmir area, Pakistan

Rafique

Rathore

2013

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

Extensive export quality reserves of granite, dolerite and marbles which are used for interior decorations as wall facing, paving floors, kitchen counter tops, etc., are available in Azad Kashmir. Since these stones contain radium in trace amounts, therefore, its use as a building material may be a potential source of indoor radon. In order to assess health hazards due to the use of these stones as a building material, samples were collected from different mining sites. After processing, these samples were placed in plastic containers and box type radon detectors were installed in it at the height of 25 cm above the surface of the samples. The containers were then hermetically sealed. After 60 days of exposure to radon, CR-39 detectors were etched in 6 M NaOH at 70°C for 9 h and measured track densities were related to radon concentration. Radon exhalation rate form the studied granites, marble and dolerite samples varied from 87 ± 26 to 353 ± 36 mBq m -2 h -1 , 79 ± 25 to 650 ± 42 mBq m -2 h -1 and 90 ± 26 to 324 ± 36 mBq m -2 h -1 , respectively. These decorative stones are therefore used in buildings and for export purposes as the observed radon exhalation values are smaller than that of the EPA recommended-action level.

show abstract

Section: Introductionmentioning

confidence: 87%

Determination of radon exhalation from granite, dolerite and marbles decorative stones of the Azad Kashmir area, Pakistan

Rafique

Rathore

2013

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…A fraction of radon emanated from the soil (and sometimes also from water, in which it may be dissolved) can find its way into the buildings through cracks in the foundations. After entering into the indoor atmosphere, it accumulates in poorly ventilated rooms to levels which may pose a significant health risk to the occupants [1][2][3][4][5][6][7][8][9]. Rates of radon emission from the soil may vary markedly over time, even for a single location.…”

Section: Introductionmentioning

confidence: 99%

Monitoring of Indoor Radon Levels Around an Oil Refinery Using CR-39-Based Radon Detectors

Rahman

Malik

Matiullah

et al. 2011

Indoor and Built Environment

View full text Add to dashboard Cite

Contribution of radon and its decay products towards the total effective dose has been reported to be more than 50% and is a second leading cause of the lung cancer after cigarette smoking. It is an established fact that besides soil and rocks, naturally occurring radio nuclides are also associated with the petroleum extracted from the sedimentary deposits. Therefore, radon measurement around oil refineries is desirable. In this regard, an indoor radon measurement study was carried out in 40 dwellings which were situated in the vicinity of an oil refinery in the Rawalpindi district using CR-39-based radon detectors. For comparison, indoor radon levels were also measured in 40 dwellings situated at a greater distance (42 km) from the refinery. The maximum measured indoor radon concentration was found to be 190 AE 6 BqÁm À3 whilst the minimum recorded concentration was 12 AE 7 BqÁm À3 . The mean radon concentration in the dwellings surveyed was 57 AE 29 BqÁm À3 . No significant difference was observed in the average indoor radon levels in the dwellings situated near the oil refinery premises when compared with those further away. From the measured radon concentrations, an annual effective dose was calculated to be 0.9 AE 0.1 mSv which is below the ICRP recommended value.

show abstract

“…It decays by alpha activity. Its character as a noble gas allows it to spread through the atmosphere without undergoing chemical reaction [1]. It can diffuse through the soil and rock and can be detected up to a level of 10 to 20 ppm in soil [2].…”

Section: Introductionmentioning

confidence: 99%

Determination and Evaluation of Radiological Risk due to Indoor Radon Concentration Levels in Offices at a University Faculty in Ibadan Southwestern Nigeria

Ojo

Farai

Jibiri

2011

Indoor and Built Environment

View full text Add to dashboard Cite

Exposure to Radon (222Rn) especially indoors has been identified as an important factor that could result in a health hazard, especially increase in risk of lung cancer. Assessment of the risk can only be done with accurate information on the radon level to which the people are exposed. This work was designed to measure indoor radon level in some offices in the Faculty of Science, University of Ibadan, using electret passive environmental radon monitor (E-PERM). Measurements were made at 54 locations in five departments of the faculty. Indoor radon concentrations in these Departments were found to vary from 39.70 to 126.77 Bq·m−3 with an average mean of 65 ± 20 Bq·m−3. The results obtained showed variation with ventilation and type of building materials. The average indoor radon concentration obtained was below the indoor radon concentration action level (148 Bq·m−3) recommended by Environmental Protection Agency (EPA), hence no remedial action is required. The work however established the applicability of the technique for a much wider scope of indoor radon survey in the country.

show abstract

Radon measurements in some houses of Tsukuba science city, Japan

Cited by 23 publications

References 7 publications

Determination of radon exhalation from granite, dolerite and marbles decorative stones of the Azad Kashmir area, Pakistan

Determination of radon exhalation from granite, dolerite and marbles decorative stones of the Azad Kashmir area, Pakistan

Monitoring of Indoor Radon Levels Around an Oil Refinery Using CR-39-Based Radon Detectors

Determination and Evaluation of Radiological Risk due to Indoor Radon Concentration Levels in Offices at a University Faculty in Ibadan Southwestern Nigeria

Contact Info

Product

Resources

About