title: Simultaneous determination of zinc(II), manganese(II) and iron(II) in pharmaceutical preparations.
abstract: The applicability of derivative spectrophotometry for simultaneous determination of zinc(II), manganese(II) and iron(II) in the form of PAR complexes was presented and discussed. Beer's law was obeyed in range 0.025-13 ppm for zinc 1-20, for manganese and 0.025-0.2 for iron ion. The elaborated method was applied successfully for determination of mentioned ions in pharmaceutical preparation without previous separation. The error of the determination did not exceed +/-3%.
authors.affiliation: Institute of Chemistry, University of Białystok, ul. J. Piłsudskiego 11/4, 15-443 Białystok, Poland. joasia@noc.uwb.edu.pl
authors.forename: Joanna
authors.initials: J
authors.lastname: Karpińska
authors.forename: Marta
authors.initials: M
authors.lastname: Kulikowska
mesh_terms: D007501:Iron / Q000032:analysis*; D008345:Manganese / Q000032:analysis*; D004364:Pharmaceutical Preparations / Q000032:analysis*; D013053:Spectrophotometry / Q000379:methods*; D014815:Vitamins / Q000032:analysis*; D015032:Zinc / Q000032:analysis*
chemical_list: D004364:Pharmaceutical Preparations; D014815:Vitamins; D008345:Manganese; D007501:Iron; D015032:Zinc