Levels of naturally occurring radioisotopes in local and imported bottled drinking water available in Québec City, Canada.

Autor: Tremblay-Cantin JC; Radioecology Laboratory, Chemistry Department, Laval University, 1045 Avenue de la Médecine, Québec, QC, Canada, G1V 0A6., Martin L; Radioecology Laboratory, Chemistry Department, Laval University, 1045 Avenue de la Médecine, Québec, QC, Canada, G1V 0A6., Proulx M; Radioecology Laboratory, Chemistry Department, Laval University, 1045 Avenue de la Médecine, Québec, QC, Canada, G1V 0A6., Priest ND; Radioecology Laboratory, Chemistry Department, Laval University, 1045 Avenue de la Médecine, Québec, QC, Canada, G1V 0A6., Larivière D; Radioecology Laboratory, Chemistry Department, Laval University, 1045 Avenue de la Médecine, Québec, QC, Canada, G1V 0A6. Electronic address: dominic.lariviere@chm.ulaval.ca.
Jazyk: angličtina
Zdroj: Journal of environmental radioactivity [J Environ Radioact] 2024 Apr; Vol. 274, pp. 107411. Date of Electronic Publication: 2024 Mar 11.
DOI: 10.1016/j.jenvrad.2024.107411
Abstrakt: Consumption of local and imported bottled water in Canada has greatly increased during the past three decades. While the presence of natural radioactivity is often overlooked when dealing with the water quality of these bottled products, it could contribute substantially to the uptake of radionuclides especially when sourced from regions with higher radioactivity levels compared to where it is consumed. In this study, the activity of several naturally occurring radionuclides (i.e., 210 Po, 226,228 Ra, 230,232 Th, 234,235,238 U) were measured in bottled water available in Québec, Canada after sample pretreatment and analysis by either radiometric or mass spectrometry approaches. 230,232 Th and 228 Ra concentrations were below minimum detectable activity levels in all samples tested. Analytical results for 234 U, 235 U, 238 U, and 226 Ra showed concentrations that ranged from 0.38 to 115 mBq/L, (2.2-313) x 10 -2 mBq/L, 0.48-58.4 mBq/L, and 1.1-550 mBq/L, respectively. 210 Po was detected in only 5 samples and its activity ranged from 2 to 26 mBq/L. To determine variability in activity within brands, the same brands of bottled water were purchased during two consecutive years and analyzed. The possible radiological impact of the consumption of these types of water was assessed based on different drinking habit scenarios. Some of the imported water brands showed higher activity concentrations than local sources or tap water, suggesting that individuals drinking predominantly imported bottled water would receive a higher radiation dose than those who drink mainly local water.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Dominic Lariviere reports financial support was provided by CANDU Owners Group Inc. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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