Study of the Composition and Model Parameters of Complexes Formed in Fe(II)-Fe(III)-Ascorbic Acid-Water SystemsJahongul Davlatshoeva, Mubashira Rakhimova and Gulrukhsor EshovaE3S Web of Conf., 401 (2023) 03046DOI: https://doi.org/10.1051/e3sconf/202340103046