Abstract
Abstract The activity concentrations of Ra-226, Ra-228, Po-210, Pb-210, U-234, U-235, U-238 and Ac-227 have been determined in approx. 400 bottled mineral waters in Germany. The median value of radiation exposure for children (age 0–1 year, 1701/y) is 0.047 mSv/a. The main part of exposure (80–90% approx.) is caused by the isotopes Ra-226 and Ra-228. The median values of concentrations are 7 mBq/l, respectively. Maximal concentrations up to 370 mBq/l were observed.
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