Permana S, Zulys A, Nofriandani W, Trinopiawan K, Prassanti R, Susanto I, et al. Preliminary Investigation of Catechin as a Natural Complexing Agent for Selective Recovery of Tantalum and Niobium from Hydrometallurgical Leachate of Bangka Tin Slag 2. Eksplorium: Bul. Pus. Bang. BGN [Internet]. 2026 May 31 [cited 2026 Jul. 17];47(1):15-28. Available from: https://ejournal.brin.go.id/eksplorium/article/view/14940