Svraka I, Memić M, Sulejmanović J, Muhić-Šarac T. Preconcentration of Metal Ions Using Silica Gel 60 F254. Glas. hem. tehnol. Bosne Herceg. 2014;42:11-16. Accessed August 31, 2026. https://glashem.pmf.unsa.ba/index.php/bctbh/article/view/120