An approach to define potential radon emission level maps using indoor radon concentration measurements and radiogeochemical data positive proportion relationships.
Journal of Environmental Radioactivity(2013)
Abstract
The aim of this paper is to present the first step of a new approach to make a map of radonprone areas showing different potential radon emission levels in the Quebec province. This map is a tool intended to assist the Quebec government in identifying populations with a higher risk of indoor radon gas exposure. This map of radon-prone areas used available radiogeochemical information for the province of Quebec: (1) Equivalent uranium (eU) concentration from airborne surface gamma-ray surveys; (2) uranium concentration measurements in sediments; and (3) bedrock and surficial geology. Positive proportion relationships (PPR) between each individual criterion and the 1417 available basement radon concentrations were demonstrated. It was also shown that those criteria were reliable indicators of radon-prone areas. The three criteria were discretized into 3, 2 and 2 statistically significant different classes respectively. For each class, statistical heterogeneity was validated by Kruskal–Wallis one way analyses of variance on ranks. Maps of radon-prone areas were traced down for each criterion.
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Key words
Radon mapping,ANOVA,Geology,Airborne survey,Uranium,Sediment
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