Author:
Walsh Stephanie,Bond Matthew J.,Guérin Nicolas,Blais Jules M.,Rowan David J.
Abstract
AbstractA new sensitive method to determine polonium-210 (210Po) and lead-210 (210Pb) in a diversity of environmental samples was developed. For fresh and marine waters, Po was pre-concentrated using a titanium (III) hydroxide (Ti(OH)3) co-precipitation. Solid environmental samples were digested with nitric acid (HNO3) and hydrogen peroxide (H2O2). The alpha thin layer source was prepared using CuS micro-precipitation and 210Po was measured by alpha spectrometry. Lead-210 was left to decay for up to a year and indirectly measured via its progeny, 210Po. The chemical recoveries for 210Po and 210Pb were high, 90% and 97%, respectively, for a large variety of samples and a very low minimum detectable activity (MDA) was obtained. The method was validated using standardized solutions and certified reference materials.
Publisher
Springer Science and Business Media LLC
Reference35 articles.
1. Laboratory National Henri Becquerel (LNHB). Atomic and Nuclear Data. http://www.lnhb.fr/nuclear-data/nuclear-data-table/ (2022).
2. Scott, B. R. Health risk evaluations for ingestion exposure of humans to Polonium-210. Dose Response 5, 94–122. https://doi.org/10.2203/dose-response.06-013.Scott (2007).
3. Ansoborlo, E. et al. Review of chemical and radiotoxicological properties of polonium for internal contamination purposes. Chem. Res. Toxicol. 25, 1551–1564. https://doi.org/10.1021/tx300072w (2012).
4. Carvalho, F. et al. The environmental behaviour of polonium. Int. At. Energy Agency Tech. Rep. Ser. 484, 1–255 (2017).
5. International Commission on Radiological Protection (ICRP). ICRP Publication Annual Report 137, 1–22, ICRP 2017 Annual Report.pdf (2017).