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Polarographic and Voltammetric Behavious of Complex of Ofloxacin with Magnesium

Zhang Jialing, Wang Chun, Fan Huizhi, Pan Jinghao (Department of Chemistry, Shanxi University, Taiyuan, 030006)  
In this paper, the polarographyic and voltammetric behaviours of complex of ofloxacin (OFLX) with magnesium(Mg) were studied in detail. In 0.01mol/L NH 3 NH 4Cl buffer solution (pH9.2), a sensitive reduction peak of OFLX Mg complex was obtained by linear sweep voltammetry. The peak potential(E p) is -1.7V(vs.Ag/AgCl) and the electrode reaction is irreversible with adsorption characteristic. The peak current(i p) is proportional to the concentration of Mg 2+ over the range of 4.0×10 -6  ̄2.0×10 -5 mol/L. It is possible to be applied to the determination of Mg 2+ . The ratio of OFLX/Mg in the complex was determined. The reduction mechanism and structure of complex were proposed.
【Fund】: 国家自然科学基金
【CateGory Index】: O657.14
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