Electrochemical sensing of NBOMes and other new psychoactive substances in blotting paper by square-wave voltammetry on a boron-doped diamond electrode

2018 ◽  
Vol 10 (20) ◽  
pp. 2411-2418 ◽  
Author(s):  
Glayton A. Souza ◽  
Dilton M. Pimentel ◽  
Amanda B. Lima ◽  
Tiago J. Guedes ◽  
Luciano C. Arantes ◽  
...  
Keyword(s):  
Square Wave Voltammetry ◽  
Electrochemical Sensing ◽  
New Psychoactive Substances ◽  
Psychoactive Substances ◽  
Boron Doped Diamond ◽  
Blotting Paper ◽  
Diamond Electrode ◽  
Boron Doped ◽  
Wave Voltammetry ◽  
Boron Doped Diamond Electrode

The electrochemical quantification of NBOMes and their correlates in seized blotting paper is presented.

Voltammetric determination of ciprofloxacin in urine samples and its interaction with dsDNA on a cathodically pretreated boron-doped diamond electrode

2015 ◽  
Vol 7 (8) ◽  
pp. 3411-3418 ◽  
Author(s):  
Gustavo Stoppa Garbellini ◽  
Romeu C. Rocha-Filho ◽  
Orlando Fatibello-Filho
Keyword(s):  
Differential Pulse Voltammetry ◽  
Square Wave Voltammetry ◽  
Differential Pulse ◽  
Boron Doped Diamond ◽  
Diamond Electrode ◽  
Boron Doped ◽  
Wave Voltammetry ◽  
Boron Doped Diamond Electrode ◽  
Pulse Voltammetry

A cathodically pretreated boron-doped diamond electrode is successfully used to determine ciprofloxacin (CIP) by differential pulse voltammetry and to infer the type of binding of CIP to DNA by square-wave voltammetry.

scholarly journals The Use of Boron-Doped Diamond Electrode for the Determination of Selected Biocides in Water Samples

Water ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1595 ◽  
Author(s):  
Mielech-Łukasiewicz ◽  
Starczewska
Keyword(s):  
Water Samples ◽  
Square Wave Voltammetry ◽  
Boron Doped Diamond ◽  
Diamond Electrode ◽  
Boron Doped ◽  
Wave Voltammetry ◽  
Boron Doped Diamond Electrode ◽  
Relative Standard ◽  
Cyclic Voltammetry Method

In recent years, the remains of chemical substances in water environments, referred to as emerging organic contaminations, have been more and more often studied by analysts. This work shows the possibility of using a boron-doped diamond electrode to determine low concentration levels of remains of pharmaceuticals in environmental samples. The study focused on selected biocides from the group of azole fungicides (itraconazole and posaconazole) and was performed using quick and sensitive electrochemical methods. The cyclic voltammetry method was used in order to determine the properties of these compounds, whereas analytical characterization was performed using square wave voltammetry. The work involved the specification of the optimum electrooxidation conditions of the selected fungicides, their comparative characterization, and the development of a new, sensitive methods of itraconazole and posaconazole assay. The proposed procedures allowed us to determine itraconazole in the range from 7.9 × 10−8 to 1.2 × 10−6 moL·L−1 and posaconazole in the range from 5.7 × 10−8 to 8.44 × 10−7 moL·L−1. The relative standard deviation of the measurements did not exceed 5.85%. The developed procedures were successfully used to determine itraconazole and posaconazole concentration in water samples and the assay recovery was between 93.5% and 102.8%.

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

2020 ◽  
Vol 6 (4) ◽  
pp. 75
Author(s):  
Geiser Gabriel Oliveira ◽  
Déborah Christine Azzi ◽  
Tiago Almeida Silva ◽  
Paulo Roberto de Oliveira ◽  
Orlando Fatibello-Filho ◽  
...  
Keyword(s):  
Square Wave Voltammetry ◽  
Limit Of Detection ◽  
Boron Doped Diamond ◽  
Bdd Electrode ◽  
Diamond Electrode ◽  
Boron Doped ◽  
Wave Voltammetry ◽  
Boron Doped Diamond Electrode ◽  
Analytical Curve ◽  
Voltammetric Detection

In this research, a boron-doped diamond (BDD) electrode has been explored to detect the chloroquine drug. The electrochemical performance of BDD electrode towards the irreversible anodic response of chloroquine was investigated by subjecting this electrode to the cathodic (−0.5 A cm−2 by 180 s, generating a predominantly hydrogen-terminated surface) and anodic (+0.5 A cm−2 by 30 s, oxygen-terminated surface) pretreatments. The cathodically pretreated BDD electrode ensured a better-defined anodic peak and higher current intensity. Thus, by applying the cathodically pretreated BDD electrode and square-wave voltammetry (SWV), the analytical curve was linear from 0.01 to 0.25 µmol L−1 (correlation coefficient of 0.994), with sensitivity and limit of detection of 12.2 µA L µmol−1 and 2.0 nmol−1, respectively. This nanomolar limit of detection is the lowest recorded so far with modified and unmodified electrodes.

Square‐Wave Voltammetry Determination of Aspartame in Dietary Products Using a Boron‐Doped Diamond Electrode

2007 ◽  
Vol 40 (17) ◽  
pp. 3195-3207 ◽  
Author(s):  
Roberta Antigo Medeiros ◽  
Adriana Evaristo de Carvalho ◽  
Romeu C. Rocha‐Filho ◽  
Orlando Fatibello‐Filho
Keyword(s):  
Square Wave Voltammetry ◽  
Boron Doped Diamond ◽  
Square Wave ◽  
Diamond Electrode ◽  
Boron Doped ◽  
Wave Voltammetry ◽  
Boron Doped Diamond Electrode
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