Determination of cobalt in vegetable animal foodstuffs by differential pulse adsorptive voltammetry using α-benzil dioxime

• Published in: The Science of the total environment Vol. 176; no. 1-3; pp. 135 - 139
• Main Authors: Giroussi, S., Voulgaropoulos, A., Ayiannidis, A.K., Golimowski, J., Janicki, M.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Shannon Elsevier B.V 22.12.1995; Elsevier Science
• Subjects: Adsorption; Adsorptive voltammetry; Animal Feed - analysis; Applied sciences; Biological and medical sciences; Catalytic determination of cobalt; Cobalt - analysis; Electrochemistry - methods; Exact sciences and technology; Food industries; Food toxicology; Fundamental and applied biological sciences. Psychology; Global environmental pollution; Hydrogen-Ion Concentration; Oximes - chemistry; Pollution; Sensitivity and Specificity; Vegetable animal foodstuffs; Vegetables - chemistry; α-benzil dioxime; Adsorptive voltammetry; Catalytic determination of cobalt; Vegetable animal foodstuffs; α-benzil dioxime; Trace element; Pollutant; Analysis method; Chelating agent; Fodder; pH; Voltammetry; Catalysis; Dioxime; Cobalt; Zinc; Heavy metal
• ISSN: 0048-9697; 1879-1026
• DOI: 10.1016/0048-9697(95)04840-5

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 α-benzil dioxime (α-BD) as a chelating agent for differential pulse adsorptive stripping voltammetry (DPASV) and is free from zinc interferences. The influence of pH, time and α-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%.