Advantages of low-background liquid scintillation alpha-spectrometry and pulse shape analysis in measuring<superscript>222</superscript>Rn, uranium and<superscript>226</superscript>Ra in groundwater samples.
In: Journal of Radioanalytical & Nuclear Chemistry, Jg. 226 (1997-12-01), Heft 1/2, S. 67-74
Online
academicJournal
Zugriff:
Liquid scintillation counting (LSC) and pulse shape analysis (PSA) was used in measuring radon and gross alpha- and beta-activities in groundwater. We used conventional LSC counters for the measurement of radon in water, but low-background LSC spectrometers for the gross activity measurements. The lower limit of detection (LLD) for radon in water is 0.6 Bq/l for a 60 min count with a conventional counter, but 0.1 or 0.2 Bq/l, with the two types of low-background LSC spectrometers equipped with a pulse shape analyser (PSA). The gross alpha and beta activity measurements are made using a simple sample preparation method, PSA of a low background LSC and spectrum analysis. The LLD recorded for gross alpha and beta with the two spectrometers are 0.02 and 0.03 Bq/l and 0.2 and 0.4 Bq/l, respectively, for a 180 minutes count and a 38 ml sample volume. The method also enable the calculation of the U and 226 Ra contents in water and indicates the presence of some other long-lived radionuclides ( 210 Pb, 228 Ra or 40 K). The LLD for U recorded with both spectrometers is 0.02 Bq −1 and for 226 Ra 0.01 Bq·1 −1 . The LLDs attained by this LSC method are two orders of magnitude lower than the maximum permissible concentrations set for U and 226 Ra. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Radioanalytical & Nuclear Chemistry is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Titel: |
Advantages of low-background liquid scintillation alpha-spectrometry and pulse shape analysis in measuring<superscript>222</superscript>Rn, uranium and<superscript>226</superscript>Ra in groundwater samples.
|
---|---|
Autor/in / Beteiligte Person: | Salonen, L. ; Hukkanen, H. |
Link: | |
Zeitschrift: | Journal of Radioanalytical & Nuclear Chemistry, Jg. 226 (1997-12-01), Heft 1/2, S. 67-74 |
Veröffentlichung: | 1997 |
Medientyp: | academicJournal |
ISSN: | 0236-5731 (print) |
DOI: | 10.1007/BF02063626 |
Sonstiges: |
|