Determination of vitamin C in effervescent tablets containing other vitamins together with trace elements.
A simple, rapid method is reported for the determination of vitamin C in effervescent tablets containing other vitamins and several trace elements such as Mg(II), Zn(II), Fe(II), Mn(II), Cu(II) and Mo(VI). The procedure was developed on the basis of the bromate ion-iodide ion-ascorbic acid clock reaction (Landolt reaction). Interference effects of air oxygen and metal ions and the role of pH are discussed in detail.
Kovács-Hadady
K
K
Department of Inorganic and Analytical Chemistry, Lajos Kossuth University, Debrecen, Hungary.
Fábián
I
I
D001205:Ascorbic Acid / Q000032:analysis*; D001965:Bromides; D006863:Hydrogen-Ion Concentration; D007454:Iodides; D007477:Ions; D008274:Magnesium; D008982:Molybdenum; D010100:Oxygen; D013607:Tablets / Q000032:analysis; D014131:Trace Elements
D001965:Bromides; D007454:Iodides; D007477:Ions; D013607:Tablets; D014131:Trace Elements; D008982:Molybdenum; D008274:Magnesium; D001205:Ascorbic Acid; D010100:Oxygen