Innovative procedure for the determination of gross-alpha/gross-beta activities in drinking water

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 ha...

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Bibliographic Details
Published inApplied radiation and isotopes Vol. 64; no. 3; pp. 368 - 372
Main Authors Wisser, S., Frenzel, E., Dittmer, M.
Format Journal Article
LanguageEnglish
Published England Elsevier Ltd 01.03.2006
Subjects
Alpha Particles
Beta Particles
Drinking water
Freeze Drying - methods
Freeze-drying
LSC
Radiation Dosage
Radiation Monitoring - methods
Radioisotopes - analysis
Radionuclides
Reproducibility of Results
Scintillation Counting - methods
Screening
Sensitivity and Specificity
Specimen Handling - methods
Water Pollutants, Radioactive - analysis
Water Supply - analysis
Drinking water
Screening
Radionuclides
LSC
Freeze-drying
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Summary: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.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0969-8043
1872-9800
DOI:10.1016/j.apradiso.2005.08.017