Author/Authors :
Cantaluppi، c نويسنده CNR - Institute of Inorganic Chemistry and Surfaces – C.so Stati Uniti 4, 35127 Padova, Italy , , Fasson، a نويسنده CNR - Institute of Inorganic Chemistry and Surfaces – C.so Stati Uniti 4, 35127 Padova, Italy , , Ceccotto، f نويسنده CNR - Institute of Inorganic Chemistry and Surfaces – C.so Stati Uniti 4, 35127 Padova, Italy , , Cianchi، a نويسنده CNR - Institute of Inorganic Chemistry and Surfaces – C.so Stati Uniti 4, 35127 Padova, Italy , , Degetto، s نويسنده CNR - Institute of Inorganic Chemistry and Surfaces – C.so Stati Uniti 4, 35127 Padova, Italy ,
Abstract :
The geothermal phenomena in the area nearby the Euganean Hills (near Padua, in Italy) are
known and exploited for therapeutic purposes since ancient times, and recently also for aesthetic purposes.
This paper presents the first characterization of the radionuclides content in the Euganean thermal waters and
mud, extended to a great number of spas. In particular the radionuclides content of both the 238U and 232Th
series in water and mud samples was determined. Moreover, for the first time the transfer of 226Ra and of 228Ra
from water to mud during the maturation process was demonstrated and the comparison of 226Ra and of 228Ra
activity concentration between mud and water was studied. An excess of “unsupported” 222Rn in water was
measured. 226Ra enrichment was observed in “mature” mud, with respect to the “raw” mud. The absorption of
radium through skin from mud application was evaluated. Also, it was possible to distinguish some muds
prepared from different starting materials.
