Specific activities and radiological hazard assessment in beach sand samples in Songkhla province, Thailand after Fukushima Dai-Ichi nuclear power plant accident in Japan

International Nuclear Science and Technology Conference 2016

Kessaratikoon, P.^1 ; Boonkrongcheep, R.^1 ; Choosiri, N.^1 ; Daoh, M.^2 ; Udomsomporn, S.^3

Nuclear and Material Physics Research Unit (NuMPRU), Department of Physics Faculty of Science, Thaksin University, Muang, Songkhla

90000, Thailand^1

Program of Physics and General Science, Faculty of Science and Technology, Songkhla Rajabhat University, Muang, Songkhla

90000, Thailand^2

Office of Atoms for Peace (OAP), 16 Vibhavadi Rangsit Rd., Chatuchak, Bangkok

10900, Thailand^3

关键词: Beach sand;    Fukushima Dai-ichi Nuclear Power Plant accidents;    Global measurements;    Median value;    Radiological hazard;    Research data;    Specific activity;    Thailand;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/860/1/012007/pdf
DOI  :  10.1088/1742-6596/860/1/012007

来源: IOP

【 摘 要 】

According to the Fukushima Dai-Ichi Nuclear Power Plant Accident in Japan on March 11, 2011, specific activities of natural (40K,226Ra and232Th) and anthropogenic (137Cs) radionuclides in 210 beach sand samples which were collected from Maharat, Sai Kaew, Samila, Chalatat, Na Thab, Sakom and Soi Sawan beaches in Songkhla Province along the eastern coast of Thailand, have been studied and evaluated. The specific activity levels of40K,226Ra,232Th and137Cs in the area were found in the range 110.13 - 4574.12, 6.99 - 451.87, 3.75 - 665.76 and 0.58- 9.91 Bq/Kg, respectively. Furthermore, the median values of specific activities of40K,226Ra,232Th and137Cs were calculated and compared with other research data in Thailand as well as global measurements and evaluations. Moreover, four radiological hazard indices for the studied area were also assessed by using the median values of specific activities of40K,226Ra and232Th.