MDMA Electrochemical Determination and Behavior at Carbon Screen-printed Electrodes: Cheap Tools for Forensic Applications

Author(s)

Murilo Alves, Gustavo ^{[1, 2]} ; Soares Castro, Alex ^[1] ; McCord, Bruce Royston ^[3] ; de Oliveira, Marcelo Firmino ^[1]

Affiliation

^[1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Quim, Grp Eletroquim Eletroanalit & Quim Forense, Ave Bandeirantes 3900, Ribeirao Preto, SP - Brazil

^[2] Univ Sao Paulo, Fac Ciencias Farmaceut Ribeirao Preto, Ave Cafe S-N, Vila Monte Alegre, Ribeirao Preto, SP - Brazil

^[3] Florida Int Univ, Int Forens Res Inst, Chem Dept, Miami, FL 33199 - USA

• Document type: Journal article
• Source: Electroanalysis; v. 33, n. 3 NOV 2020.
• Web of Science Citations: 0

Abstract

This article describes a method that uses Carbon Screen-printed Electrodes (C-SPEs) to detect 3,4 - methylenedioxyamphetamine (MDMA) by Linear Sweep Voltammetry in aqueous medium. Major parameters of this technique were evaluated aiming improve the method sensibility. Amines interference were conducted in order to verify disturbs at the MDMA response. The method obtained a linear response from 1x10(-5) mol L-1 to 1x10(-4) mol L-1 with linear correlation coefficient of 0.996, Amperometric Sensitivity (AS) of 0.025 Axmol(-1) L, Limit of Detection (LOD) of 1,83x10(-6) mol L-1, and Limit of Quantification (LOQ) of 6,11x10(-6) mol L-1. The method applicability, reproducibility and reproducibility were carried over inter/intra days tests and its application on seized samples. (AU)

• FAPESP's process: 19/04439-3 - Study of the redox process of the molecules of MDMA, MDA and MDEA on surface of a chemically modify electrode with Schiff Bases: development of a voltammetric sensor for forensic interest
• Grantee: Gustavo Murilo Alves
• Support type: Scholarships in Brazil - Scientific Initiation
• FAPESP's process: 19/19796-6 - Fentanyl analysis at carbon paste electrodes modified with Schiff base complexes and screen-printed electrodes coupled to characterization of seized amphetamine samples employing SERS: contributions to public healthcare policies
• Grantee: Gustavo Murilo Alves
• Support type: Scholarships abroad - Research Internship - Scientific Initiation
• FAPESP's process: 16/23825-3 - Development of voltammetric sensors for determination of cocaine and delta-9-tetrahydrocannabinol in samples seized by the police
• Grantee: Marcelo Firmino de Oliveira
• Support type: Regular Research Grants