Electrochemical characterization of luminol and its determination in real samples

Gulcemal Yildiz; Ugur Tasdoven; Necati Menek

doi:10.1039/c4ay01281j

Electrochemical characterization of luminol and its determination in real samples

Gulcemal Yildiz^*, Ugur Tasdoven, Necati Menek

^*Corresponding author for this work

Department of Chemistry

Ondokuz Mayis University

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

The electrochemical behavior of luminol, an important molecule in forensic science, was studied in Britton-Robinson buffer solution (pH 2-pH 13) at a glassy carbon electrode using cyclic voltammetry and differential pulse voltammetry techniques. Luminol showed a well-defined and irreversible oxidation peak at 0.33 V (vs. Ag/AgCl) in 0.05 mol L^-1Britton-Robinson buffer solution at pH 12. The electrooxidation process of luminol was adsorption-controlled and irreversible over the pH range studied (2.0-13). The differential pulse voltammetric determination of luminol was carried out. Under optimal conditions, the glassy carbon electrode displayed a linear response over the range from 1.8 × 10^-8to 4.5 × 10^-4mol L^-1luminol concentration, and statistical data were evaluated. A commercially available real sample that contained luminol was analyzed according to this method. The luminol percentage of the sample was obtained as 21.2 (±0.4)%.

Original language	English
Pages (from-to)	7809-7813
Number of pages	5
Journal	Analytical Methods
Volume	6
Issue number	19
DOIs	https://doi.org/10.1039/c4ay01281j
Publication status	Published - 7 Oct 2014

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abstract = "The electrochemical behavior of luminol, an important molecule in forensic science, was studied in Britton-Robinson buffer solution (pH 2-pH 13) at a glassy carbon electrode using cyclic voltammetry and differential pulse voltammetry techniques. Luminol showed a well-defined and irreversible oxidation peak at 0.33 V (vs. Ag/AgCl) in 0.05 mol L-1Britton-Robinson buffer solution at pH 12. The electrooxidation process of luminol was adsorption-controlled and irreversible over the pH range studied (2.0-13). The differential pulse voltammetric determination of luminol was carried out. Under optimal conditions, the glassy carbon electrode displayed a linear response over the range from 1.8 × 10-8to 4.5 × 10-4mol L-1luminol concentration, and statistical data were evaluated. A commercially available real sample that contained luminol was analyzed according to this method. The luminol percentage of the sample was obtained as 21.2 (±0.4)%.",

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T1 - Electrochemical characterization of luminol and its determination in real samples

AU - Yildiz, Gulcemal

AU - Tasdoven, Ugur

AU - Menek, Necati

PY - 2014/10/7

Y1 - 2014/10/7

N2 - The electrochemical behavior of luminol, an important molecule in forensic science, was studied in Britton-Robinson buffer solution (pH 2-pH 13) at a glassy carbon electrode using cyclic voltammetry and differential pulse voltammetry techniques. Luminol showed a well-defined and irreversible oxidation peak at 0.33 V (vs. Ag/AgCl) in 0.05 mol L-1Britton-Robinson buffer solution at pH 12. The electrooxidation process of luminol was adsorption-controlled and irreversible over the pH range studied (2.0-13). The differential pulse voltammetric determination of luminol was carried out. Under optimal conditions, the glassy carbon electrode displayed a linear response over the range from 1.8 × 10-8to 4.5 × 10-4mol L-1luminol concentration, and statistical data were evaluated. A commercially available real sample that contained luminol was analyzed according to this method. The luminol percentage of the sample was obtained as 21.2 (±0.4)%.

AB - The electrochemical behavior of luminol, an important molecule in forensic science, was studied in Britton-Robinson buffer solution (pH 2-pH 13) at a glassy carbon electrode using cyclic voltammetry and differential pulse voltammetry techniques. Luminol showed a well-defined and irreversible oxidation peak at 0.33 V (vs. Ag/AgCl) in 0.05 mol L-1Britton-Robinson buffer solution at pH 12. The electrooxidation process of luminol was adsorption-controlled and irreversible over the pH range studied (2.0-13). The differential pulse voltammetric determination of luminol was carried out. Under optimal conditions, the glassy carbon electrode displayed a linear response over the range from 1.8 × 10-8to 4.5 × 10-4mol L-1luminol concentration, and statistical data were evaluated. A commercially available real sample that contained luminol was analyzed according to this method. The luminol percentage of the sample was obtained as 21.2 (±0.4)%.

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Electrochemical characterization of luminol and its determination in real samples

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