Prasetyo E, Toyoda K. Solid Phase Extraction of Thorium and Uranium and their Separation from Lanthanides using Humic Acid Silica Gel as a Low-Cost Adsorbent. J. Eng. Technol. Sci. [Internet]. 2017Oct.31 [cited 2025Aug.31];49(4):508-19. Available from: https://journals.itb.ac.id/index.php/jets/article/view/4088