“SYNTHESIS AND SORPTION PROPERTIES TOWARDS TOXIC METAL IONSOF COMPOSITES BASED ON SILICA GEL AND ADSORPED 4-VINYLPYRIDINE AND TERT-BUTYL METHACRYLATE COPOLYMERS: DOI: Https: doi.Org 10.17721 1728-2209.2023.1(58).3”. 2023. Bulletin of Taras Shevchenko National University of Kyiv. Chemistry 58 (1): 18-21. https://chemistry.bulletin.knu.ua/en/article/view/1592.