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), 14-18. https://chemistry.bulletin.knu.ua/article/view/8649