We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK


93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Determination of Rn-222 in freshwater: developm...
View graph of relations

« Back

Determination of Rn-222 in freshwater: development of a robust method of analysis by alpha/beta separation liquid scintillation spectrometry.

Research output: Contribution to journalJournal article


Journal publication date23/08/2006
JournalApplied Radiation and Isotopes
Number of pages12
Original languageEnglish


Liquid scintillation spectrometry is used widely for determining 222Rn in natural waters; however, the benefits of α/β separation have not been fully explored. The extractants toluene and Ultima Gold F were compared, and both performed well for a range of extreme waters. A robust method for calibrating extraction and counting efficiencies has been developed. Detection limits are 20 mBq l−1 (toluene) and 16 mBq l−1 (UGF) for a 60 min count and 600-ml sample, halving the required sample volume.

Bibliographic note

The final, definitive version of this article has been published in the Journal, Applied Radiation and Isotopes, 65 (1), 2007, © ELSEVIER.