Health risk assessment of natural radionuclide and heavy metals in commonly consumed medicinal plants in south-west Nigeria
| Autor: | Ademola Augustine Kolapo, John Oluwatosin Omoboyede |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Radionuclide
Health risk assessment 010401 analytical chemistry Heavy metals 010501 environmental sciences 01 natural sciences Reference Daily Intake Effective dose (radiation) Hazard quotient 0104 chemical sciences law.invention Toxicology law Radionuclide Heavy metal Fractional hazard quotient Average daily doses Effective dose Environmental science Medicinal plants Atomic absorption spectroscopy 0105 earth and related environmental sciences |
| Zdroj: | Ife Journal of Science; Vol 20, No 3 (2018); 529-537 |
| ISSN: | 0794-4896 |
| Popis: | The natural radionuclide and heavy metal contents of five commonly consumed medicinal plants in southwestern Nigeria were determined using gamma spectrometry with high purity germanium detector and flame atomic absorption spectrophotometer. The activity concentration of 40 K ranged from 315.65±39.17 to 892.04±63.09 Bqkg -1 . 238 U ranged from 1.73±1.95 - 5.41±2.39 Bqkg -1 and 232 Th ranged from 1.22±1.75 Bqkg -1 to 8.49±2.69 Bqkg -1 in zobo. The mean annual effective dose was found to be lower than the standard proposed by United Nation Scientific Committee on Energy and Atomic Research. Fatal cancer risk and hereditary cancer risk from ingestion of the plants lie within the safe limit as recommended by United State Environmental Protection Authority and World Health Organization. The mean concentrations of the heavy metals in the samples were compared with the permissible limit in literature and were found to be within the safe limit. The estimated annual daily doses are lower than the recommended daily intake except Zn which is higher. The estimated fractional hazard quotient of the metals is lower than or equal to 1 except for Zinc in garlic and ginger. Total hazard index obtained for all the samples are higher than 1.0 but lower than 3.0. This implies that there is no probable hazard from the consumption of these plants Keywords: Radionuclide, Heavy metal, Fractional hazard quotient, Average daily doses, Effective dose |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|