ACTIVE BIOMONITORING OF AIR RADIOACTIVITY IN URBAN AREAS

作者：Popovic Dragana^*; Todorovic Dragana; Ajtic Jelena; Nikolic Jelena

来源：Nuclear Technology & Radiation Protection, 2009, 24(2): 100-103.

DOI：10.2298/NTRP0902100P

• radionuclides
• air
• urban area
• moss monitoring
• gamma spectrometry

To assess the validity of the moss bag monitoring technique in the radioactivity control of ground level urban air, a study on radionuclide contents in moss was performed in the city of Belgrade, Serbia. From May 2006 to May 2007, moss (Sphagnum girgensohni, Dubna, Russia) was exposed to the aero pollution in a location in the central area of the city. The activity of (40)K, (210)Pb, and (137)Cs was measured on an HPGe detector (Canberra, relative efficiency 23%) by standard gamma spectrometry. The activities 245 +/- 25 Bq/kg for (40)K, 315 +/- 34 Bq/kg for (210)Pb, and 28 +/- 4 Bq/kg for (137)Cs are in the range of values reported for the region; the differences are due to the moss species, local climate and measuring technique. Taking into consideration the time of the exposure and appropriate calibration procedure, moss bag biomonitoring could be used as a complementary method for determination of radionuclides in urban air.

• 出版日期2009-9