Abdullad, Zeyad K., and Shatha Y. Al-Samarrai. 2021. “Modified Solid Ion-Selective Electrode for Potentiometric Determination of Sulfide in Oil Refineries Water”. Scientific Review Engineering and Environmental Sciences (SREES) 30 (1):98-105. https://doi.org/10.22630/PNIKS.2021.30.1.9.