Gross-alpha and gross-beta activity, Rn-222, Ra-226 and Ra-224 of wate
rs from several spas of Andalusia (Spain) were performed in order to d
etermine their radioactivity. Radon concentration ranged from 0.225 to
130 Bq/l. Ra-226 and Ra-224 concentrations ranged from 2 to 1367 mBq/
l and from 2 to 122 mBq/l respectively. Correlations between the Rn-22
2 and Ra-226 concentrations and gross-alpha activity were obtained. A
correlation between Ra-224 concentrations and gross-beta activity was
also found. (C) 1998 Elsevier Science Ltd. All rights reserved.