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Arsenic concentrations in brown rice and health risk assessment |
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| รหัสดีโอไอ | |
| Creator | Chunyapuk Kukusamude |
| Title | Arsenic concentrations in brown rice and health risk assessment |
| Contributor | Supalak Kongsri |
| Publisher | Khon Kaen University, Thailand |
| Publication Year | 2568 |
| Journal Title | Asia-Pacific Journal of Science and Technology |
| Journal Vol. | 30 |
| Journal No. | 4 |
| Page no. | 17 (7 pages) |
| Keyword | Arsenic, Carcinogenic risks, Estimated weekly intake, INAA, Thai population |
| URL Website | https://apst.kku.ac.th/ |
| Website title | https://apst.kku.ac.th/arsenic-concentrations-in-brown-rice-and-health-risk-assessment/ |
| ISSN | 2539-6293 |
| Abstract | The concentration of arsenic (As) in fifty brown rice samples was analyzed using instrumental neutron activation analysis (INAA). The samples were irradiated for seven hours at the Thai Research Reactor (TRR-1/M1) in Bangkok, Thailand. After neutron irradiation, the gamma-ray intensity of the samples was measured using a high-purity germanium (HPGe) detector. The average As concentration found in the brown rice samples was 0.217 mg/kg. The As levels in the studied samples were below the Codex maximum permissible level of inorganic As (0.35 mg/kg). The estimated weekly intake (EWI) of As via brown rice consumption for males (3.176 µg/kg BW/week) and females (3.809 µg/kg BW/week) was below the previously established provisional tolerable weekly intake (PTWI) of 15 µg/kg BW. Thus, the findings suggest that the Thai population is not at significant risk of As exposure through brown rice consumption based on the EWI. However, the carcinogenic risk for both Thai males and females exceeded the acceptable risk threshold (10⁻⁴), indicating a potential health concern over a lifetime of rice consumption. |
