Radionuclide Content of and 222Rn Emanation From Building Materials Made From Phosphate Industry Waste Products

Ch, Paredes; Wv, Kessler; Rr, Landolt; Pl, Ziemer; Dj, Paustenbach

doi:10.1097/00004032-198707000-00002

Cited by 23 publications

(7 citation statements)

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“…This is particularly true when the materials are either made from radioactive industrial by-products such as blast-furnace slag, gypsum, fly ash, etc. (Mustonen 1984;Paredes et al 1987), or extracted from high background radiation areas (Aliabadi et al 1993;Pinnock 1991).…”

Section: Introductionmentioning

confidence: 99%

Determination of Natural Radionuclides Content in Some Building Materials in Nigeria by Gamma-Ray Spectrometry

Ademola¹

2008

Health Physics

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This paper presents the findings of a study undertaken to determine the natural radioactivity present in some building materials in Nigeria using a gamma-ray spectrometer with a hyper pure germanium detector. A total of 118 samples of commonly used building materials were collected from manufacturers and suppliers of these materials. The mean radioactivity concentrations measured in the different building materials varied from 9.4 to 62.9, 1.3 to 88.4, and 21.5 to 762.4 Bq kg(-1), respectively, for 226Ra, 232Th, and 40K. The average contents of 226Ra, 232Th, and 40K for all the samples were 36.3, 46.5, and 320.9 Bq kg(-1), respectively, lower than the world average for building materials (50, 50, and 500 Bq kg(-1)). The calculated mean radium equivalent activity and external and internal hazard indices for the entire sample were lower than United Nation Scientific Committee on the Effects of Atomic Radiation recommended limits and comparable with results of similar studies undertaken in other countries. The mean annual gonadal equivalent doses of some of the samples were higher than the world average value for soil.

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Section: Introductionmentioning

confidence: 99%

Determination of Natural Radionuclides Content in Some Building Materials in Nigeria by Gamma-Ray Spectrometry

Ademola¹

2008

Health Physics

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“…Any loss of z22Rn from the samples would have influenced the results. However, for samples oven-dried at 1 OO"C, the measured emanation coefficients of building materials had been found to be in the range of 6 X (Paredes et al 1987), which is much smaller than the measuring uncertainties due to statistical fluctuations.…”

Section: P( E ; )mentioning

confidence: 80%

Radionuclide Contents in Building Materials Used in Hong Kong

Man

Lau²,

Au³

et al. 1989

Health Physics

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The radionuclide contents of conventional natural raw building materials, coal ash and slag, and finished building products have been determined using gamma-ray spectrometry. Results of brick measurements in their original geometry and in crushed form are compared. The radioactive concentrations in cement and sand, mostly imported from China, are among the lowest measured. However, due to the high radioactivity of aggregates, composed of granite mainly extracted locally, the mean Ra equivalent activity of concrete is high compared with that in some countries. The radioactivity levels of coal ash and slag in Hong Kong are about the average values in other countries. The incorporation of coal ash and slag in ordinary concrete does not alter the radioactivity significantly.

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“…Radon exhalation from building materials has been the subject of many studies (Ismail & Abumurad, 1996;Paredes, Kessler, Landalt, Zimemer, & Paustenbach, 1987).…”

Section: Radon From Building Materialsmentioning

confidence: 99%

A Study of Factors Affecting in Increasing or Decreasing of Radon Levels in Buildings of Suwaylih Town

Alzubaidy¹,

Mohammad²

2012

MAS

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This research aimed to study the factors affected in radon levels in buildings of Suwaylih town (altitude about 900 to 1300 above the sea level) as areference to Jordan. The study was started from august, 10, 2012 to October, 10, 2012. Suwaylih Town divided into six districts namely, Al-Kamaliah, Al-Rahmaniah, Al-Sharqy, Al-Fadielah, Maysaloon, Al-Bashaaer districts. About 780 Passive dosimeters containing highly pure CR -39 were distributed randomly in districts of Suwaylih town.The indoor dosimeters were collected after three months. The collected detectors were chemically etched using 30% KOH for 9 hours at 70 ± 0.1 °C. An optical microscope was used to measure the nuclear alpha track density on the detectors surfaces.The research results showed that radon concentration affected by many factors, for example, the average concentration in guest rooms was 83 ± 18 Bq.m -3 and 70 ± 14 Bq.m -3 in bed rooms, while it was 53 ± 10 Bq.m -3 in living rooms. Morever, the concentration was about 97 ± 15 Bq.m -3 in rooms without ventilation while the concentration was about 30 ± 10 Bq.m -3 at rooms ventilated more than 9 hours daily.The study also showed the concentration was relatively high 90 ± 18 Bq.m -3 in buildings made of stones while concentration was low 47 ± 12 Bq.m -3 in the buildings made from blocks. In addition, the concentration was different with increase in age of building, the average were 63 ± 15 Bq.m -3 , 51 ± 13 Bq.m -3 and 39 ± 11 Bq.m -3 in more than 25 years, between 10 -25 years and less than 10 years, respectively. In general the radon concentration in Suwaylih town was found to be about 62 ± 13 Bq.m -3 .

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Radionuclide Content of and 222Rn Emanation From Building Materials Made From Phosphate Industry Waste Products

Cited by 23 publications

References 0 publications

Determination of Natural Radionuclides Content in Some Building Materials in Nigeria by Gamma-Ray Spectrometry

Determination of Natural Radionuclides Content in Some Building Materials in Nigeria by Gamma-Ray Spectrometry

Radionuclide Contents in Building Materials Used in Hong Kong

A Study of Factors Affecting in Increasing or Decreasing of Radon Levels in Buildings of Suwaylih Town

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