Spectrophotometric Determination of Copper(II) Using 2,2[O-Tolidine-4,4-Bis azo]bis[4,5-Diphenyl imidazole](MBBAI). Baghdad Sci.J 2020, 17 (1(Suppl.), 0287. https://doi.org/10.21123/bsj.2020.17.1(Suppl.).0287.