Shakir I, Al-Awadi N. Continuous Flow Injection Analysis for The Photometric Determination of Metformin Drug Via The Release of Copper(II) ion from Charged Gel Bead Crystal. Iraqi Journal of Science [Internet]. 2023 Dec. 30 [cited 2025 Dec. 9];54(1):17-26. Available from: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/12014