Voltammetric determination of erythromycin in water samples using a boron‐doped diamond electrode. Issue 11 (8th October 2015)

• Record Type: Journal Article
• Authors: Radičová, Monika; Behúl, Miroslav; Vojs, Marian; Bodor, Róbert; Vojs Staňová, Andrea
• Is Part Of: Physica status solidi. Volume 252:Issue 11(2015:Nov.)
• Page Start: 2608
• Page End: 2613
• Publication Date: 2015-10-08
• Subjects: boron‐doped diamond electrode -- erythromycin -- square‐wave voltammetry -- water samples; Solid state physics -- Periodicals; Solids -- Periodicals; Atomic structure -- Periodicals; 530.41
• DOI: 10.1002/pssb.201552245
• Languages: English
• ISSNs: 0370-1972

Abstract

Abstract : A new, simple, sensitive, and low‐cost voltammetric method using an as‐grown boron‐doped diamond electrode was developed for the determination of erythromycin in environmental (water) samples. Erythromycin provided an irreversible oxidation peak at a potential of + 0.87 V versus Ag/AgCl/KCl (3 mol/L) electrode in an ammonium acetate buffer (pH 5). Under optimal experimental conditions, square‐wave voltammetry was used for the determination of erythromycin. The calibration curves showed good linearity in a concentration range from 6.8 to 68.1 μmol/L with the coefficient of determination R 2 = 0.9993. The limit of detection of the proposed method was 1.1 μmol/L. Very good repeatability ( n = 7) at three different concentration levels (6.8, 13.6 and 20.4 μmol/L) was obtained (RSD of 2.4, 1.8, 1.6, respectively). The developed square‐wave method was successfully applied to the determination of erythromycin in several different water samples with good recovery (from 89 to 107%).