Selective extraction of iron (III) and its spectrophotometric determination directly in the organic phaseN.T. Rakhmatullayeva, A.Sh. Giyasov, N.B. Lutfullayeva, M.M. Niyazova, Z.X. Gapparova, U.N. Raxmatov, Sh.M. Mirkomilov and N.T. RakhmatullayevaE3S Web Conf., 371 (2023) 01008DOI: https://doi.org/10.1051/e3sconf/202337101008