Ali NH, Osman MS, Mohamad Robi FI, Maidan Dali MR, Abd Rahman MF. Colorimetric-Based Concentration Measurement of Manganese Ions using Spectroscopy Approach. SRJ [Internet]. 2023 Mar. 17 [cited 2024 Nov. 24];20(1):89-105. Available from: https://journal.uitm.edu.my/ojs/index.php/SRJ/article/view/3138