Natural Radioactivity Levels in Sediment Collected in Pattani Bay Pattani Province, Thailand

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Maimoon Intan
Sainap Doloh
Roseleena Anantanukulwong

Abstract

This research aimed to measure radioactivity levels in marine sediment collected in some areas of Pattani Bay and compare with world average values of those in soil reported by UNSCEAR (2008). Sediment samples were collected from 7 sites along the seashore of Pattani Bay, Pattani province during the summer and rainy seasons. Radioactivity was analysed using gamma spectrometer with a high purity germanium detector (HPGe) using IAEA Soil 6 as a reference material. The detected radionuclides were related to the naturally occurring isotopes 40K, 238U and 232Th. The average values of specific actives of 40K, 238U and 232Th are: 803.29 ± 107.16, 59.93 ± 16.13 and 79.47 ± 12.44 Bq/kg, respectively (summer season), and 648.78 ± 212.46, 44.42 ± 20.42 and 66.20 ± 30.16 Bq/kg, respectively (rainy season). It was found that, their hazard indices were higher than the UNSCEAR (2008)’s reported values of 412, 35 and 45 Bq/kg for 40K, 238U and 232Th, respectively. However, the values of hazard index of natural radionuclides in sediment samples were found at the normal level.

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References

Hajisamae, S. (2011). Pattani bay facts and challenges. Sri Trang News Journal, 34(7), 4–6.

Phaophang, C. (2013). Radioactivity levels in marine sediment collected in Chonburi province. Doctoral Dissertation. Bangkok: Kasetsart University.

Wongsanit, S. (2010). Gross alpha and beta activities in sea water, sediment and plankton in the coastal ecosystem: the upper gulf of Thailand. Master’s Thesis. Bangkok: Kasetsart University.

Doloh, S. (2013). Thermoluminescence dating technique of freshwater shells and flint in Khao-Harn cave historical site Satun province. Master’s Thesis. Prince of Songkla University, Pattani Campus.

Bhongsuwan, T., & Hemtrakoonwong, H. (2017). Radionuclide content in beach sand in Ta Kua Pa district, Phang Nga province. Naresuan University Journal, 25(1), 123–137.

Limsuwan, S., Vichaidid, T., & Limsuwan, P. (2011). ESR dating of laterite from Ban Tha Ta Suea, Kanchanaburi, Thailand. Applied Radiation and Isotopes, 69(2), 545–549.

Veiga, R., Sanches, N., Anjos, R.M., Macario, K., Bastos, J., Iguatemy, M.,… Umisedo, N.K. (2006). Measurement natural radioactivity in Brazilian beach sands. Radiation Measurements, 41(2), 189–196.

United Nation Scientific Committee on the Effect of Atomic Radiation (UNSCEAR).(2008). Sources and Effects of Ionizing Radiation. Report to General Assembly, with Scientific Annexes. New York: Author.

United Nation Scientific Committee on the Effect of Atomic Radiation (UNSCEAR).(2000). Sources and Effects of Ionizing Radiation. Report to General Assembly, with Scientific Annexes. New York: Author.