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Description
Radon monitoring in Albania has been focused on schools and workplaces, where radon is classified as an existing exposure risk. This study was conducted in Tirana, home to approximately one-third of Albania’s population. The geological profile of Tirana comprising recent volcanic rocks, granitic formations, and permeable soils near seismic zones contributes to increased indoor radon potential and, consequently, in elevated health risks due to higher exposure levels.
The survey included 80 schools and 70 workplaces, with measurements taken on first floors and basements. Passive radon detectors (CR-39) were deployed for three-month periods in two different periods, winter and spring. These measurements were conducted by using passive monitoring methods. In schools, detectors were primarily installed in classrooms, libraries, and gymnasiums; meanwhile in workplaces, they were placed in offices, meeting rooms, and laboratories.
In many cases, indoor radon concentrations exceeded the recommended reference level of 300 Bq/m³. Detected radon levels ranged from 24 to 1000 Bq/m³ in schools and from 22 to 400 Bq/m³ in workplaces. A descriptive analysis revealed a positively skewed and peaked distribution, indicating that the data follow a log-normal distribution. Based on these results was performed the Natural Radiation Background Assessment and Determination in Tirana district and the average dose rate level was 0.063 µSv/h. The findings highlight the need for immediate mitigation measures, such as improving ventilation systems and conducting regular monitoring. Continuous radon surveillance is recommended to maintain safe levels and minimize health risks. Additionally, increasing public awareness especially among vulnerable groups is essential to address the health hazards of radiation exposure to radon.
