Konshina, Dzhamilya N., Victor V. Open’ko, TemerdashevZaual` A., and Valery V. Konshin. “Silica Gel With Covalently Immobilized Thiosemicarbazide for Dynamic Preconcentration of copper(II) and zinc(II)”. Sorbtsionnye i Khromatograficheskie Protsessy 16, no. 5 (November 18, 2019). Accessed December 5, 2025. https://journals.vsu.ru/sorpchrom/article/view/1391.