B. Setiawan
Center for Radioactive Waste Technology, National Nuclear Energy Agency,
Puspiptek Area, Serpong, Tangerang Selatan 15310, Indonesia Indonesia
U. Zhafirah
Dept. of Chemistry, Fac. of Math. And Science, University of Indonesia, Depok 16424, Indonesia Indonesia
A. Saefumillah
Dept. of Chemistry, Fac. of Math. And Science, University of Indonesia, Depok 16424, Indonesia Indonesia