krisdiyanto, didik, khamidinal, and abdullah faqih. “Adsorption Cd (II) by Zeolite from Bottom Ash Modified by Dithizone”. Journal of Tropical Chemistry Research and Education 4, no. 2 (October 30, 2022): 110–125. Accessed April 10, 2025. https://ejournal.uin-suka.ac.id/tarbiyah/jtcre/article/view/42-06.