Electrochemical Determination of 2-Naphthylamine in Perfume Samples Using Borondoped Diamond Electrode

Abstract

Recebido em 11/09/2019; aceito em 12/12/2019; publicado na web em 09/03/2020 This work presents a simple electrochemical method for 2-naphthylamine (2NAP) determination in perfume by differential-pulse voltammetry (DPV) employing a boron-doped diamond (BDD) electrode cathodically treated. Simple dilution of sample in supporting electrolyte was performed before electrochemical analysis. A borate buffer solution of pH 10.0 containing 20% (v/v) ethanol provided stable responses of 2NAP without electrode fouling. Modulation time, step potential and modulation amplitude were optimized at 20 ms, 6 mV and 70 mV, which achieved a limit of detection (LOD) of 0.0046 μmol L −1 with a linear range between 0.5 and 90 μmol L −1 , and RSD < 2.9%, respectively. Recovery values for spiked samples with 2NAP were between 102 and 104%. The proposed method is feasible to be applied for 2NAP detection and quantification on perfume samples with simple sample preparation.

Sensitive Voltammetric Detection of Chloroquine Drug by Applying a Boron-Doped Diamond Electrode

“…By using this pretreatment, the anodic peak of chloroquine was better defined and occurred at a less positive potential, which is a contributing factor in reducing possible interferences. This enhanced voltammetric response of chloroquine molecule on the cathodically pretreated BDD is in line with several other studies [14,32,[56][57][58][59][60], which was selected for further studies.…”

A new voltammetric platform for reliable determination of the sport performance-enhancing stimulant synephrine in dietary supplements using a boron-doped diamond electrode

“…All these aspects may result in substantially higher background current and unrepeatable results, mostly as a consequence of the non-reproducibility of the preparation of the particular chemically modied electrode. 25 The boron-doped diamond (BDD) has been broadly used as a progressive electrode material for miscellaneous electrochemical purposes, in particular as a powerful sensor in drug, food and environmental analysis [26][27][28] as well as an efficient tool in electro-oxidation processes for wastewater treatment. 29,30 Because of the favorable attributes of this advanced material such as very wide potential range, minor or negligible propensity to adsorption, low background currents, chemical and mechanical stability, biocompatibility and commercial availability, [31][32][33] the BDD electrode has been popularly used as an eligible alternative to conventional carbon-based (glassy carbon, carbon paste and graphite) and chemically modied electrodes.…”