Radon exhalation of untreated and aged Modica stone building material: a case study

A study assessing radon exhalation from Modica stone, a material used in UNESCO-listed Late Baroque Towns of the Val di Noto, revealed that aging through salt crystallization does not significantly alter its radon release. Researchers employed the Closed Chamber Method (CCM) with Durridge Rad7 equipment to measure exhalation rates and applied the Markkanen room model to estimate indoor radon concentrations. Findings suggest potential for developing a systematic strategy to assess radon content in building materials, aiding decision-makers in identifying structures requiring protection measures.

Caridi, F., Chiriu, D., Da Pelo, S., Faggio, G., Guida, M., Messina, G., Ponte, M., Ruffolo, S. A., Majolino, D., & Venuti, V. (2026). Radon exhalation of untreated and aged Modica stone building material: a case study [JD]. Atti della Accademia Perloritana dei Pericolanti. Classe di Scienze Fisiche, Matematiche e Naturali, 104(1), A4–1. https://doi.org/10.1478/AAPP.1041A4