Application of a new spectrophotometric method for zinc determination in beverages and condiments.
A new spectrophotometric method has been applied to the determination of zinc in bottled mineral water (with and without gas), refreshments, vinegar, and table salt. The method introduces the 1-[di-(2-pyridyl)-methylidene]-5-(salicylidene)-thiocarbo hydrazone (DPST) as chromogenic reagent. This procedure is simple, rapid, reproducible and does not demand costly outfit and chemicals.
Morales
M T
MT
Department of Food Chemistry, Toxicology and Applied Chemical Analysis, Faculty of Pharmacy, University of Seville, Spain.
Montaña
M T
MT
Galán
G
G
Gómez Ariza
J L
JL
D001628:Beverages / Q000032:analysis*; D003212:Condiments / Q000032:analysis*; D007202:Indicators and Reagents; D013053:Spectrophotometry / Q000379:methods; D015032:Zinc / Q000032:analysis*
D007202:Indicators and Reagents; D015032:Zinc