Gamma-ray spectrometry of radon in water and the role of radon to representatively sample aquifers.
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.
Talha
S A
SA
Department of Physics, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa. stalha@uwc.ac.za
Lindsay
R
R
Newman
R T
RT
de Meijer
R J
RJ
Maleka
P P
PP
Hlatshwayo
I N
IN
Mlwilo
N A
NA
Mohanty
A K
AK
D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods*; D011868:Radioisotopes / Q000032:analysis*; D011886:Radon / Q000032:analysis*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012990:Soil Pollutants, Radioactive / Q000032:analysis*; D013019:South Africa; D013051:Spectrometry, Gamma / Q000379:methods*; D014875:Water Pollutants, Radioactive / Q000032:analysis*
D011868:Radioisotopes; D012990:Soil Pollutants, Radioactive; D014875:Water Pollutants, Radioactive; D011886:Radon