| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1877295 | Applied Radiation and Isotopes | 2006 | 5 Pages |
Abstract
An alternative sample preparation method for the determination of gross-alpha/beta activity concentrations in drinking water is introduced in this paper. After the freeze-drying of tap water samples, determination by liquid scintillation counting can be applied utilizing alpha/beta separation. It has been shown that there is no adsorption or loss of solid radionuclides during the freeze-drying procedure. However, the samples have to be measured quickly after the preparation since the ingrowth of daughter isotopes negatively effects the measurement. The limits of detection for gross-alpha and gross-beta activity are in the range 25–210 mBq/l, respectively, for a measurement time of only 8–9 h.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
S. Wisser, E. Frenzel, M. Dittmer,