Naslov
Gamma Radiation and Dose Rate Investigations on the Adriatic Islands of Magmatic Origin

Autori
Petrinec, Branko ; Franić, Zdenko ; Leder, Nenad ; Tsabaris Christos ; Bituh, Tomislav ; Marović, Gordana

Izvornik
Radiation protection dosimetry (0144-8420) 139 (2010), 4; 551-559

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Adriatic magmatic islands ; radium equivalent activity ; external hazard index ; dose rate ; radon

Sažetak
Natural radioactivity of Middle-Adriatic Sea islands and islets was measured. Gamma spectrometric measurements, both in situ and in laboratory, as well as radon measurements in the seawater were performed. Activity concentrations and the associated dose rates due to naturally occurring 232Th, 238U and 40K radioisotopes were determined. Dose rates calculated from in situ gamma spectrometry are in correlation with dose rates calculated from activity concentrations measured in collected samples of pebbles and rocks. In situ gamma ray spectrometry in the seawater has been performed, showing activity concentration of 220 and 240 Bq m23 for 214Bi and 214Pb, respectively due to the presence of magmatic rocks in the seabed. The radium equivalent activity varied from 13 to 53 Bq kg21. These values are lower than the limit values, indicating that the radiation hazard is not significant. The highest mean activity concentrations of naturally occurring radionuclides in rock samples collected were found on the islands of magmatic origin.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Javno zdravstvo i zdravstvena zaštita

POVEZANOST RADA