“Adsorption of Cadmium & Zinc on Chemically Modified Silica Gel Functionalized With Linear Poly (amido Amine) ”. Bulletin of Pure and Applied Sciences-Chemistry 42, no. 1 (June 20, 2023): 27–32. Accessed May 4, 2025. https://www.journals.acspublisher.com/index.php/bpaschem/article/view/8235.