Determination of Tetracycline by Microdroplet Hydrodynamic Adsorptive Voltammetry Using a Multiwalled Carbon Nanotube Paste Rotating Disk Electrode. (3rd May 2019)

• Record Type: Journal Article
• Authors: Sultana, Ayesha; Sazawa, Kazuto; Islam, Md. Saiful; Sugawara, Kazuharu; Kuramitz, Hideki
• Is Part Of: Analytical letters. Volume 52:Number 7(2019)
• Page Start: 1153
• Page End: 1164
• Publication Date: 2019-05-03
• Subjects: Adsorptive voltammetry -- microdroplet hydrodynamic adsorptive voltammetry -- tetracycline -- zephiramine; Chemistry, Analytic -- Periodicals; Chemistry, Analytic -- Abstracts; 543
• DOI: 10.1080/00032719.2018.1523911
• Languages: English
• ISSNs: 0003-2719

Abstract

Abstract: A novel and simple method is proposed for the determination of tetracycline by adsorptive voltammetry in a droplet using a carbon nanotube paste rotating disk electrode (CNTP-RDE). An enhanced electrochemical oxidation response of tetracycline was observed in pH 8.2 supporting electrolyte by the addition of a long-chain cationic surfactant, such as benzyldimethyltetradecylammonium chloride (zephiramine). Under the optimized experimental conditions, the calibration curve was linear across a tetracycline concentration range from 1.0 × 10 −7 to 2.0 × 10 −6 M. The limit of detection and sensitivity were 4.0 × 10 −8 M and 0.9358 A M −1, respectively. This method was successfully employed for the determination of tetracycline in milk samples.