Natural radioactivity and external dose assessment of surface soils in Bolikhamxay province, Laos

Van, Loat Bui

doi:10.25073/2588-1124/vnumap.4224

Cited by 2 publications

(1 citation statement)

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“…In Malaysia, the activity concentration of 226 Ra, 232 Th and 40 K were 66 Bq.kg -1 ,82 Bq.kg -1 and 310 Bq.kg -1 respectively [10]. In Bolikhamxay Province in Laos [11], the activity concentration of 226 Ra, 232 Th and 40 K were 43 Bq.kg -1 , 57 Bq.kg -1 and 413 Bq.kg -1 respectively. It can be clearly seen that 226 Ra and 232 Th studied values were lower than Vietnam,Thailand, Malaysia and Bolikhamxay Province in Laos.…”

Section: Activity Concentration Of 226 Ra 232 Th and 40 Kmentioning

confidence: 99%

Assessment of Natural Radioactivity and Associated Radiation Hazards in Soils samples from Khammuane Provine, Laos

Leuangtakoun

Loat²,

Hong³

et al. 2019

MaP

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The aims of this study are to determine the activity concentration of naturally occurring radionuclides in soils and the extent of their exposure to the population. The radioactivity concentrations of 226Ra, 232Th and 40K in the surface layers (5‑30 cm depth) collected from Khammoune province, Laos, were 32.57 ± 3.35 Bq.kg-1, 41.10 ± 3.04 Bq.kg-1 and 295.07 ± 17.36 Bq.kg-1respectively. From activity concentration of 226Ra, 232Th and 40K, we derived the parameters using the assessment of the radiological hazard from exposure to these soil samples. The average absorbed dose rate of all measured samples is 52.02 ± 4.09 nGy.h-1, while the average annual effective dose in the outdoor due to gamma radioactivity is found to be 0.06 ± 0.005 mSv.y-1.The average values for radium equivalent activity, external and internal hazard indices were found to be 114.07 ± 4.70 Bq.kg-1, 0.31 and 0.39, respectively.

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Section: Activity Concentration Of 226 Ra 232 Th and 40 Kmentioning

confidence: 99%