Open AccessAssessment of contamination of natural and anthropogenic radionuclides in rice samples collected from Songkhla province, Thailand
Author(s) -
Prasong Kessaratikoon,
D Riyapunt,
Ruthairat Boonkrongcheep,
Nopparit Changkit
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2145/1/012019
Subject(s) - radionuclide , contamination , environmental science , semiconductor detector , radiological weapon , environmental chemistry , toxicology , radiochemistry , chemistry , biology , physics , detector , nuclear physics , ecology , optics
Study on assessment of contamination of natural and artificial radionuclides in agricultural products samples are very important to all human being as a consumer. In the present study, we have measured and evaluated the specific activities of natural ( 40 K, 226 Ra and 232 Th) and anthropogenic ( 137 Cs) radionuclide in rice samples. The 30 rice samples were collected from general and department stores at Songkhla province in the south of Thailand. The high-purity germanium (HPGe) detector and gamma-ray spectrometry analysis system which was set-up in advanced laboratory in Thailand Institute of Nuclear Technology (public Organization) or TINT were employed to perform all of measurements and analysis for this study. The frequency distribution of specific activities of 40 K, 226 Ra, 232 Th and 137 Cs for this study were also studied and found to be asymmetrical distribution with the skewness of 1.29, 1.43, 2.32 and 0.82, respectively. For this reason, the median values of specific activities of 40 K, 226 Ra and 232 Th which were 620.04 ± 44.30, 3.73 ±0.54 and 2.44 ±0.54 Bq/kg respectively, should be selected and also used to calculate some related radiological hazard indices in this study. Furthermore, the excess lifetime cancer risk (ELCR) would be also evaluated and presented. Moreover, the results of present study were taken to compare with some data and studies in Thailand and global measurement and calculations. It was found that the outcomes satisfied the standards of UNSCEAR and IAEA.