“SORPTION PRECONCENTRATION AND DETERMINATION OF ANTIMONY AND TELLURIUM ON MODIFIED SILICA GEL: DOI: https://doi.org/10.17721/1728-2209.2019.1(56).3” (2019) Bulletin of the Taras Shevchenko National University of Kyiv. Chemistry, 56(1), pp. 14–18. Available at: https://chemistry.bulletin.knu.ua/article/view/8649 (Accessed: 14 February 2026).