Assessment of environmental 226Ra, 232Th and 40K concentrations in the region of elevated radiation background in Segamat District, Johor, Malaysia

Saleh, Muneer Aziz; Ramli, Ahmad Termizi; Alajerami, Y.S.M.; Aliyu, Abubakar Sadiq

doi:10.1016/j.jenvrad.2013.04.013

Cited by 55 publications

(15 citation statements)

References 16 publications

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“…These plots show the same general activity concentration trend of gross-α, gross-β, 226 Ra: shale > soil > limestone, which demonstrates that the radioactivity levels are associated with the soil and rock types. By comparison (Table 4), all of the activity concentrations of gross-α and gross-β in the soil in this study compare well with the results of similar studies reported in the Kinta and Segamat Districts, Malaysia [27,28] and Chihuahua City, Mexico [29]. However, compared with Macedonia, the average gross-α and gross-β activity concentrations in this study were nearly three and two times higher, respectively [30].…”

Section: Radioactivity Characteristics Of Soils and Rockssupporting

confidence: 89%

Radioactivity of Soil, Rock and Water in a Shale Gas Exploitation Area, SW China

Huang

Hao

Pang

et al. 2017

Water

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Abstract:Studies have been carried out to investigate the baseline radioactivity level (gross alpha, gross beta and 226 Ra) of soil, rocks and groundwater in the Fuling block, Chongqing, the largest shale gas exploitation area of China. The results show that there is a general activity concentration trend of gross alpha, gross beta and 226 Ra: shale > soil > limestone due to the high content of uranium, thorium and potassium in shale and low content in limestone. The average activities of shallow groundwater from a limestone aquifer are 0.14, 0.13 and <0.008 Bq/L for gross alpha, gross beta and 226 Ra, respectively. The radioactivity concentrations of gross alpha, gross beta and 226 Ra (4.37, 1.40 and 0.395 Bq/L, respectively) of the formation water were far lower than those of formation water in the Marcellus shale in the USA (with ranges of 86-678, 23-77 and 16-500 Bq/L, respectively). One polluted shallow groundwater source and its associated stream sediments had been polluted due to leakage of drilling fluid with relatively high radioactivity levels and high concentration of main ions. Overall, this study provides an important baseline radioactivity level to assess the impact of shale gas exploitation on a shallow environment.

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Section: Radioactivity Characteristics Of Soils and Rockssupporting

confidence: 89%

Radioactivity of Soil, Rock and Water in a Shale Gas Exploitation Area, SW China

Huang

Hao

Pang

et al. 2017

Water

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“…Plots of the two variables (x = theoretical, y = experimental) used in the study showed that they were linearly related. The intercept might be explained as the contribution from cosmic rays to the measured gamma dose rate [20]. Besides that, natural radionuclides may not be distributed uniformly in the soil; radon and its decay products in the atmosphere may affect dose rates; soil moisture of the surface layer may affect dose rates; and the soil samples were analyzed after removal of pebbles and stones [21].…”

Section: Resultsmentioning

confidence: 99%

Terrestrial Gamma Radiation Exposure in Bangka-Belitung Islands, Indonesia

Syarbaini

Setiawan

2015

Atom Indo.

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“…A number of studies have been conducted on the natural terrestrial radiation that contributed to the field of environmental radiology in Malaysia [6][7][8][9][10][11][12] while a few studies have been conducted on the radioactivity measurements on soil and water [13][14][15][16][17][18]. Despite that, there is no information on radioactivity measurement on soil and water in Johor Bahru so far.…”

Section: Introductionmentioning

confidence: 99%

Natural environmental radioactivity and the corresponding health risk in Johor Bahru District, Johor, Malaysia

Saleh

Ramli

Hamzah

et al. 2014

J Radioanal Nucl Chem

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This study aims to obtain the baseline data on environmental terrestrial radiation and to assess the corresponding health risk in Johor Bahru District, Johor, Malaysia. The mean activity concentrations of 232 Th, 226 Ra and 40 K were 119 ± 6, 51 ± 4 and 158 ± 21 Bq kg -1 , respectively. Primordial radionuclide 232 Th is the main contributor to gamma dose rate and the mean found to be 135 nGy h -1 . Gross alpha and gross beta activity concentrations in water were 0.012 ± 0.003 and 0.234 ± 0.018 Bq L -1 , respectively.

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Assessment of environmental 226Ra, 232Th and 40K concentrations in the region of elevated radiation background in Segamat District, Johor, Malaysia

Cited by 55 publications

References 16 publications

Radioactivity of Soil, Rock and Water in a Shale Gas Exploitation Area, SW China

Radioactivity of Soil, Rock and Water in a Shale Gas Exploitation Area, SW China

Terrestrial Gamma Radiation Exposure in Bangka-Belitung Islands, Indonesia

Natural environmental radioactivity and the corresponding health risk in Johor Bahru District, Johor, Malaysia

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