New Approach for the On-Line Spectrophotometric Determination of Folic Acid in Pure and Pharmaceutical Preparation via Oxidation by Cerium(IV) Sulphate Using Ayah 3Sx3-3D-Solar Cell CFI Spectrophotometer Analyzer. (2023). Iraqi Journal of Science, 55(3B), 1153-1163. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/11541