Abdullad, Z.K. and Al-Samarrai, S.Y. 2021. Modified solid ion-selective electrode for potentiometric determination of sulfide in oil refineries water. Scientific Review Engineering and Environmental Sciences (SREES). 30, 1 (Mar. 2021), 98–105. DOI:https://doi.org/10.22630/PNIKS.2021.30.1.9.