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  • Title: Gamma-ray spectrometry of radon in water and the role of radon to representatively sample aquifers.
    Author: Talha SA, Lindsay R, Newman RT, de Meijer RJ, Maleka PP, Hlatshwayo IN, Mlwilo NA, Mohanty AK.
    Journal: Appl Radiat Isot; 2008 Nov; 66(11):1623-6. PubMed ID: 18515121.
    Abstract:
    Measurement of radon in water by gamma-ray spectrometry using a HPGe detector has been investigated to determine aquifer characteristics. The radon activity concentration is determined by taking the weighted average of the concentrations derived from gamma-ray lines associated with (214)Pb and (214)Bi decay. The role of accurate radon data to representatively sample aquifers was also investigated by studying a semi-cased borehole. A simplified physical model describing the change of radon concentration with the pumping time, reproduces the data and predicts the time for representative sampling of the aquifer.
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