James William Ariend, and Ismail Marzuki. “Analysis of the Role of Iron (Fe) Content on Nickel Distribution in Limonite and Saprolite Zones Using Energy Dispersive X-Ray Fluorescence (ED-XRF)”. Journal of Green Chemical and Environmental Engineering 2, no. 2 (July 9, 2026): 94–106. Accessed July 19, 2026. https://ejournal.candela.id/index.php/jgcee/article/view/159.