“EXTRACTION OF LEAD (II) IONS USING DITHIZONE METHOD ON WASTEWATER OF KHONDZA”. American Journal of Engineering , Mechanics and Architecture (2993-2637) 2, no. 4 (April 22, 2024): 100–103. Accessed January 27, 2026. https://www.grnjournal.us.e-scholar.org/index.php/AJEMA/article/view/4338.