Determination of cobalt in vegetable animal foodstuffs by differential pulse adsorptive voltammetry using alpha-benzil dioxime.
A selective and sensitive voltammetric method for the determination of cobalt in vegetable animal foodstuffs is developed. The method is based on the use of alpha-benzil dioxime (alpha-BD) as a chelating agent for differential pulse adsorptive stripping voltammetry (DPASV) and is free from zinc interferences. The influence of pH, time and alpha-BD concentration on the peak resolution and height are discussed. The method was successfully applied in some typical vegetable animal foodstuffs with R.S.D. < 6%.
Giroussi
S
S
Department of Chemistry, Aristotle University of Thessaloniki, Greece.
Voulgaropoulos
A
A
Ayiannidis
A K
AK
Golimowski
J
J
Janicki
M
M
D000327:Adsorption; D000821:Animal Feed / Q000032:analysis*; D003035:Cobalt / Q000032:analysis*; D004563:Electrochemistry / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D010091:Oximes / Q000737:chemistry*; D012680:Sensitivity and Specificity; D014675:Vegetables / Q000737:chemistry*
D010091:Oximes; C098265:Benzil dioxime; D003035:Cobalt