Institution: | a Budapest University of Technology and Economics, Department of Inorganic and Analytical Chemistry, Szt. Gellért tér 4, H1111 Budapest, Hungary b Hungarian Academy of Sciences, Research Group of Technical Analytical Chemistry, Szt. Gellért tér 4, H1111 Budapest, Hungary c Institute of Isotopes, Hungarian Academy of Sciences, P.O. Box 77, H1525 Budapest, Hungary |