226Ra and 228Ra in Croatian Rivers - Collegium antropologicum, Vol.32 - Supplement 2 No.2 October 2008.Reportar como inadecuado




226Ra and 228Ra in Croatian Rivers - Collegium antropologicum, Vol.32 - Supplement 2 No.2 October 2008. - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Collegium antropologicum, Vol.32 - Supplement 2 No.2 October 2008. -

The presence of natural radionuclides in Croatian rivers emphasizes the need for its continuous monitoring. Therefore

results of 226Ra and 228Ra determination in Croatian river waters are presented in this paper. 226Ra and 228Ra were

chosen as a possible source of human exposure due to their high radio-toxicity. Fifty liters of river water samples were collected

from the Danube, Drava, Sava, Krka and Neretva rivers twice a year from 2002 to 2006. It is showed that activity

concentrations of 226Ra ranged from 6.54 mBq-L to 59.44 mBq-L and 228Ra activity concentrations ranged from 2.57

mBq-L to 20.76 mBq-L. The highest values of both 226Ra and 228Ra were measured in the river Drava, and the lowest values

in the river Sava. Statistically significant differences were not observed between radium concentrations from two watersheds

the Black Sea and the Adriatic Sea watershed, nor between 226Ra-228Ra ratio in rivers individually. The number

of collected samples is insufficient to make more statistically significant conclusions. However the data obtained in

this study could be the baseline for evaluating possible future changes.

natural radioactivity; 226Ra; 228Ra; river water; monitoring



Autor: Tomislav Bituh - Branko Petrinec - Gordana Marović - Jasminka Senčar - Iva Gospodarić -

Fuente: http://hrcak.srce.hr/



DESCARGAR PDF




Documentos relacionados