A Novel Semi Automated On-Line Determination of Oxonium Ion Via Precipitation Reaction Using a New Mode of Attenuated Measurement of Incident Light (0 – 180o) by AYAH 5SX4-ST-5D Solar CFI Analyser. Iraqi Journal of Science. 2023;55(4B):1736-1750. Accessed May 20, 2024. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/11285