Application of tartrazine for sensitive and selective kinetic determination of Cu(II) traces

An efficient, highly sensitive, fast and selective kinetic method for determination of traces of Cu(II) was developed and applied for its quantification in different real samples. The method was based on the catalytic effect of Cu(II) traces on the redox reaction of artificial azo-dye tartrazine (tr...

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Bibliographic Details
Published in:Journal of analytical chemistry (New York, N.Y.) N.Y.), 2014-12, Vol.69 (12), p.1147-1152
Main Authors: Micic, R.J, Mitic, S.S, Pavlovic, A.N, Kostic, D.A, Mitic, M.N
Format: Article
Language:English
Subjects:
Analysis
Analytical Chemistry
Chemical reaction, Rate of
Chemical tests and reagents
Chemistry
Chemistry and Materials Science
Copper compounds
Electric properties
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Summary:An efficient, highly sensitive, fast and selective kinetic method for determination of traces of Cu(II) was developed and applied for its quantification in different real samples. The method was based on the catalytic effect of Cu(II) traces on the redox reaction of artificial azo-dye tartrazine (tri-sodium-5-hydroxy-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]pyrazole-3-carboxylate) with H 2 O 2 . The optimum operating conditions regarding reagent concentration were examined and established. Linearity of the method was obtained in the concentration range from 13 to 318 ng/mL of Cu(II), with a detection limit ( LOD ) (3 s b / m ) of 2 ng/mL, and limit of quantification ( LOQ ) (10 s b / m ) of 7 ng/mL. Obtained results for Cu(II) determination in analyzed samples, as well as the development and validation of the proposed analytical procedure are given and discussed.
ISSN:1061-9348
1608-3199
DOI:10.1134/S1061934814120107