Erratum to “A method to determine 238U activity in environmental soil samples by using 63.3-keV-photopeak-gamma HPGe spectrometer” [Applied Radiation and Isotopes 61 (6) (2004) 1419–1424]

Huy, Ngo Quang; Luyen, T.V.

doi:10.1016/j.apradiso.2004.11.001

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Subtraction Of Interfering Peaks1

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2012

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“…Since gamma-ray spectrometry of 238 U is a very common activity, there are numerous papers (see e.g. [17][18][19][20][21][22]) dealing with this and listing interfering peaks and ways to resolve this. For robust quantification of 238 U it is important that the interfering peaks are not too dominating.…”

Section: Subtraction Of Interfering Peaksmentioning

confidence: 99%

Quantification of uranium-238 in environmental samples using gamma-ray spectrometry

Hult¹,

Andreotti²,

Orduña³

et al. 2012

EPJ Web of Conferences

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A large number of environmental samples are routinely measured world-wide using gamma-ray spectrometry, some of its assets being easy sample preparation and comprehensive data for many radionuclides in one analysis. Although other techniques can be considered more suitable for analysing 238 U in environmental samples, it is also routinely done by gamma-ray spectrometry. One mainly uses γ-ray emissions following the decay of the first daughter, 234 Th, for determining the 238 U activity. However, the low-energy gamma-rays at 63 keV and 92.5 keV are very difficult to quantify in a robust way due to high attenuation and interferences. This paper quantifies parameters affecting the possibility of making robust quantification of 238 U via 234 Th using gamma-ray spectrometry. It addresses the use of correct decay data, suitable detectors, optimised sample size, enhanced spectral amplification, correction for peak interferences and control of background.

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