| Autor: |
Ibrahim Shabana, El-Said, Mohammad Taher Qutub, Maher, Abdulrahman Kinsara, Abdulraheem |
| Předmět: |
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| Zdroj: |
Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. ); Oct2016, Vol. 41 Issue 10, p4217-4224, 8p |
| Abstrakt: |
Groundwater of Wadi Nu'man (30 km southeast of Mecca city) of high radon-222 ( $${^{222}}$$ Rn) content, emanated directly from the bed rock into the water reservoir, has been analyzed for lead-210 ( $${^{210}}$$ Pb) and polonium-210 ( $${^{210}}$$ Po), the comparatively long- lived $${^{222}}$$ Rn progenies, to study the effect of the continuous $${^{222}}$$ Rn emanation on the accumulation of both radionuclides in this water. Emanation of $${^{222}}$$ Rn directly from rock to water may be affected seasonally by atmospheric temperature and pressure; therefore, $${^{222}}$$ Rn and $${^{222}}$$ Rn progenies were reanalyzed in seasonal samples of the same wells. The obtained results showed $${^{210}}$$ Pb and $${^{210}}$$ Po activity levels ranging from <6 to 29.9 and from 0.6 to 18.2 mBq/L, respectively, which was far below the recorded level of their parent radionuclide $${^{222}}$$ Rn (10.9-99.7 Bq/L). The data have been discussed in detail. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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