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The radioactive nuclides were a cancer causing agent. They have a source of origin from nature and man-made. The natural radioactive elements were found in granite rock. The purpose of this research were analyze the activity of radioactive nuclides (226Ra, 232Th and 40K) in herbs and forage plant samples from Koh Phangan District, Surat Thani Province and to analyze the Annual external effective dose rate (E). A total of 20 species of plants, including medicinal plants and food chains plant were randomly sampled. The plant samples were analyzed by the gamma spectrometry system with high-purity germanium (HPGe) detector. It was found that the radioactive nuclides of 226Ra, 232Th and 40K were ranged from 6.75 ± 0.16 to 61.55 ± 0.48, 1.76 ± 0.15 to 34.24 ± 0.25 and 330.74 ± 0.37 to 1337.54 ± 0.64 Bq/kg, respectively. In addition, the Annual external effective dose rate (E) in all plants were lower than required (UNSCEAR, 2000).
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Srisuwan, T. (2006). Radon: the hidden hazard in buildings, Journal of Architecture/ Planning Studies. 4(2), 23–37.
Nualchavee, R. (2002). Nuclear Science. Bangkok: Kasetsart University.
Saenboonruang, K., Phonchanthuek, E. & Prasandee, K. (2018). Determination using gamma spectroscopy of natural radionuclide activity concentrations and annual committed effective doses in selected Thai medicinal plants, Chiang Mai Journal of Science. 45(2), 821–831.
Department of Mineral Resources. (2550). Department of Mineral Resources, Suratthani Province, Thailand. Bangkok: Department of Mineral Resources.
Lakkiang, M., Keawtaptim, P., Youngchauy, U., Bordeepong, S., Phansuke, P., & Changkian, S. (2019). Determination of Radionuclide (226Ra, 232Th, 40K) in soil at Phangan District, Suratthani Province, In The 29thThaksin University National Academic Conference: Research and Innovation for Sustainability Development. 278–284. May 9–10, 2019, Siam Oriental Hotel, Hat Yai. Songkhla: Thaksin University.
Kritsananuwat, R., Chanyotha, S., Kranrod. C., & Pengvanich, P. (2017). Transfer factor of K from soil to Alpinia Gangal plant grown in northern Thailand, Journal of Physics: Conference Series. 860, 1–9.
Abdou, N.Y., Hegazy, R.A., & Eissa, H.S. (2017). Measurement of gamma activity from clay soil and the leaves of Jew’s-mallow plant enhanced by fertilizers, World Applied Sciences Journal. 35(1), 128–136.
Pulhani, V.A., Dafauti, S., Hegde, A.G., Sharma, R.M., & Mishra, U.C. (2005). Uptake and distribution of natural radioactivity in wheat plants from soil, Journal of Environmental Radioactivity. 79, 331–346.
The United Nations Scientific Committee on the Effects of Atomic Radiation. (2000). Sources, effects and risk of ionizing radiation. UNSCEAR, New York: United Nations.