Exposure to radon gas in groundwater in southwest Angola (Lubango-Huíla): Implications of geology and climate change.

In southern African countries most of the population uses groundwater collected in dug wells for domestic consumption instead of water from public distribution systems. To investigate the impact of natural and human factors on urban groundwater quality, 276 samples were collected in the Lubango region (Angola) in water distribution systems and dug wells ranging from a few meters to almost one hundred meters in depth. Radon concentrations (RC) were determined by liquid scintillation counting according to ISO 13164-4:2015.

Radon and thoron concentrations in the southwest region of Angola: dose assessment and implications for risk mapping.

Indoor radon (Rn) and thoron (Rn) are the most important natural sources of ionizing radiation to the public. Radiological studies that assess simultaneously Rn and Rn, and their controlling factors are particularly scarce in African countries. Hence, we conducted a survey of indoor Rn and Rn in buildings located in the SW region of Angola.

Estimation of the radon production potential in sedimentary rocks: A case study in the Lower and Middle Jurassic of the Lusitanian Basin (Portugal).

The correlation between radon exposure and the increased probability of lung cancer is widely recognized. In Portugal, several efforts have been made to estimate the radon potential in granitic rocks, however, existing knowledge on sedimentary rocks is limited. For this reason, extensive representative sampling was conducted in the well-known Lower and Middle Jurassic of the Lusitanian Basin (Central Portugal) to evaluate the radon potential of latter type of rocks.