Determination of primordial radionuclide concentrations in UAE groundwater using high-resolution gamma-ray spectrometry
| Autor: | Samar El-Sayed, Yazeed Alashban, Tamar Salah, Rahaf Ajaj, Mohammed A. Salem Al Yafei, Nasser Shubyar |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Radionuclide
Health Toxicology and Mutagenesis Mean value Public Health Environmental and Occupational Health Analytical chemistry High resolution Pollution World health Analytical Chemistry Nuclear Energy and Engineering Radiology Nuclear Medicine and imaging Spectroscopy Groundwater Gamma ray spectrometry Mathematics |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 330:923-928 |
| ISSN: | 1588-2780 0236-5731 |
| DOI: | 10.1007/s10967-021-08021-2 |
| Popis: | Groundwater is the most valuable resource in arid regions, such as UAE. Estimations of natural radionuclide concentrations are important to evaluate the potential risks to the public. In this study, the activity concentrations (ACs) of naturally occurring radioactive materials in groundwater from wells across UAE were determined using gamma spectroscopy. Forty groundwater samples were collected from different sites across UAE and measured using gamma-ray spectrometry technique. The samples were collected from agricultural areas, which represents a small area of the UAE. The AC of 226Ra ranged from 2.61 $$\times \,10^{ - 1}$$ to 4.14 $$\times \,10^{ - 1}$$ Bq/L, with a mean value of 3.37 $$\times \,10^{ - 1}$$ ± 0.063 Bq/L. For 232Th, the AC ranged from 1.55 $$\times \,10^{ - 1}$$ to 2.93 $$\times \,10^{ - 1}$$ Bq/L, with a mean value of 2.24 $$\times \,10^{ - 1}$$ ± 0.056 Bq/L. The mean ACs for 226Ra and 232Th were lower than the recommended limit of 1 Bq/L by the World Health Organization (WHO). The AC of 40K ranged from 3.24 to 6.8 Bq/L, with a mean value of 5.0 ± 0.122 Bq/L. Similarly, the mean AC for 40K was lower than the WHO-recommended limit of 10 Bq/L. The absorbed dose rates of 5.0 $$\times \,10^{ - 1}$$ nGy/h and annual effective dose rates of 6.2 $$\times \,10^{ - 1}$$ µSv/year were found to be lower than the WHO-specified average limit. The internal and external hazard indexes were below the UNSCEAR-recommended threshold, indicating no significant health risks to the public. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|