Determination of Major Cation and Anion Content in Coconut Fiber Ash Potentially Renewable Catalyst: Penentuan Kandungan Kation dan Anion Mayor dalam Abu Serabut Kelapa Berpotensi Katalis Renewable. JISTECH: Journal of Information Science and Technology, [S. l.], v. 6, n. 2, 2023. Disponível em: http://jistech.unipa.ac.id/index.php/istech/article/view/141. Acesso em: 28 sep. 2026.