Determination of UV-Vis Spectrophotometric Method of Metal Complexes Stoichiometry between Cu(II), Ca(II), Cd(II), Mg(II) and Zn(II) with Bupropion Hydrochloride

In this study, simple, rapid and accurate UV-Vis spectrophotometric method was developed for the determination ofcomplexes stoichiometry of Cu(II)-bupropion hydrochloride, Ca(II)-bupropion hydrochloride, Cd(II)-bupropionhydrochloride, Mg(II)-bupropion hydrochloride and Zn(II)-bupropion hydrochloride. The spectrums of the complexesformed between bupropion hydrochloride with Cu (II), Ca (II), Cd (II), Mg (II) and Zn (II) metal cations were taken in therange of 500 to 190 nm and the stoichiometry of the complexes formed between bupropion hydrochloride with Cu (II), Ca(II), Cd (II), Mg (II) and Zn (II) metal cations were determined by using the mole ratio method at maximum wavelength(λmax=252 nm). The stoichiometry of Cu(II)-bupropion hydrochloride, Ca(II)-bupropion hydrochloride, Cd(II)-bupropionhydrochloride and Zn(II)-bupropion hydrochloride were calculated as 1:1, but Mg(II)-bupropion hydrochloride complexwas calculated as 1:2. The recovery was found 95.0% for bupropion hydrochloride. Lambert-Beer’s obeyed theconcentration range of 1.40-6.91 µg/mL for bupropion hydrochloride. The LOD and LOQ were found to be 13.81 and 1.38µg/mL for bupropion hydrochloride, respectively. The interaction between bupropion hydrochloride with Cu (II), Ca (II), Cd(II), Mg (II) and Zn (II) were investigated by applying UV-visible spectrophotometric method, and satisfactory results wereobtained