The assessment of the natural radiation dose committed to the Hong Kong people

Yu, K.N.; Guan, Zheng; Stokes, M. J.; Young, E. C. M.

doi:10.1016/0265-931x(92)90033-p

Cited by 164 publications

(50 citation statements)

References 3 publications

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“…This definition is consequent upon an assumption that 370 Bqkg K produce the same gamma dose rate (Abbady, 2005;Cevik et al, 2010;Saueia et al, 2005). Ra eq is calculated using the equation (Beretka and Mathew, 1985;Yu et al, 1992):…”

Section: Resultsmentioning

confidence: 99%

Natural radioactivity and environmental risk assessment of Sokoto phosphate rock, Northwest Nigeria

Kolo¹

2014

Afr. J. Environ. Sci. Technol.

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, and 315.3±6.7 Bqkg -1 respectively. Contributions from radium contents to the overall radionuclide activity concentrations were quite significant. The calculated mean value of the absorbed dose rate was found to be 3.6 times the maximum value for the world background level, which shows the severity of radiation risk the public is exposed to in the study areas. The computed values for radiation hazard indices were above the world's proposed safety limits by UNSCEAR, which place the study areas among high background radiation zones. Some restrictive measures and precautionary actions are therefore obligatory for the local farmers and the general public from the view point of radiation protection.

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Section: Resultsmentioning

confidence: 99%

Natural radioactivity and environmental risk assessment of Sokoto phosphate rock, Northwest Nigeria

Kolo¹

2014

Afr. J. Environ. Sci. Technol.

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“…In this study, the assessment of the radiation risk for the population is done by calculating the external hazard index H ex , according to the following criterion [8]:…”

Section: Natural Radioactivity -Local Background Valuesmentioning

confidence: 99%

Natural radioactivity in virgin soils and soils from some areas with closed uranium mining facilities in Bulgaria

et al. 2014

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Abstract:The natural radionuclide ( 238 U, 226 Ra, 232 Th and 40 K) contents in soil were determined for three different regions of Bulgaria using high-resolution gamma-ray spectrometric analysis. A comparison of the dynamics of their behavior throughout the years was performed. Bulgaria is a country with intensive uranium mining activities. That is why radiological monitoring of closed uranium mining facilities in different regions of the country are obligatory and of great interest. This work presents results from such investigations made in regions where remediation was necessary. The results have been evaluated according to Bulgarian radionuclide environment contamination legislation.

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“…Uniformity with respect to exposure to radiation has been defined in terms of radium equivalent activty (Ra cq ) in Bq kg -1 to compare the specific activity of materials containing different amounts of 226 Ra, 232 Th and 40 K. It is calculated through the following relation [5] :…”

Section: Radium Equivalent Activitymentioning

confidence: 99%

“…The external terrestrial γ-radiation absorbed dose rate in air at a height of about 1 meter about the ground are calculated by using the conversion factor of 0.0414 nGy h -1 /Bq kg -1 for 40 K, 0.461 nGy h -1 /Bq kg -1 for 226 Ra, and 0.623 nGy h -1 /Bq kg -1 for 232 Th [5], assuming that 137 Cs, 90 Sr and the 235 U decay series can be neglected as they contribute very little to the total dose from environmental background [6][7][8]. …”

Section: Calculation Of Air-absorbed Dose Ratementioning

confidence: 99%

Analysis of 226Ra, 232Th and 40K in soil samples for the assessment of the average effective dose

Mehra¹,

Singh

2009

Indian J Phys

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The activity concentrations of the natural radionuclides namely 238 Ra, 232 Th and 40 K are measured for soil samples collected from different locations of Faridkot and Mansa districts of Punjab. HPGe detector, based on high-resolution gamma spectrometry system is used for the measurement of activity concentration. (European Commission, 1999) report, soil from these regions is safe and can be used as construction material without posing any significant radiological threat to population. The corresponding average annual effective dose for indoor and outdoor measured in the study area are 0.42 mSv and 0.10 mSv respectively.

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The assessment of the natural radiation dose committed to the Hong Kong people

Cited by 164 publications

References 3 publications

Natural radioactivity and environmental risk assessment of Sokoto phosphate rock, Northwest Nigeria

Natural radioactivity and environmental risk assessment of Sokoto phosphate rock, Northwest Nigeria

Natural radioactivity in virgin soils and soils from some areas with closed uranium mining facilities in Bulgaria

Analysis of 226Ra, 232Th and 40K in soil samples for the assessment of the average effective dose

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