Comparative Study of Voltammetric Analysis with UV-Vis Spectrophotometry in Determining the Results of Liquid-Liquid Extraction of Samarium (III). Valensi [Internet]. 2024 Dec. 16 [cited 2025 Dec. 22];10(2):229-36. Available from: https://journal.uinjkt.ac.id/valensi/article/view/38941