**Author details**

Katarzyna Kiegiel<sup>1</sup> \*, Agnieszka Miskiewicz1 , Dorota Gajda1 , Sylwester Sommer1 , Stanislaw Wolkowicz<sup>2</sup> and Grazyna Zakrzewska-Koltuniewicz1

\*Address all correspondence to: k.kiegiel@ ichtj.waw. pl

1 Institute of Nuclear Chemistry and Technology, Warsaw, Poland

2 Polish Geological Institute, National Research Institute, Warsaw, Poland
