MDMA Electrochemical Determination and Behavior at Carbon Screen-printed Electrodes: Cheap Tools for Forensic Applications |
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| Authors: | Gustavo Murilo Alves Alex Soares Castro Bruce Royston McCord Marcelo Firmino de Oliveira |
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| Institution: | 1. Grupo de Eletroquímica, Eletroanalítica e Química Forense Departamento de Química Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Avenida Bandeirantes, 3900, Ribeirão Preto, São Paulo, Brazil;2. Chemistry Departament, International Forensic Research Institute, Florida International University, 33199 Miami, FL, United States of America. |
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| 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 1×10?5 mol L?1 to 1×10?4 mol L?1 with linear correlation coefficient of 0.996, Amperometric Sensitivity (AS) of 0.025 A×mol?1 L, Limit of Detection (LOD) of 1,83×10?6 mol L?1, and Limit of Quantification (LOQ) of 6,11×10?6 mol L?1. The method applicability, reproducibility and reproducibility were carried over inter/intra days tests and its application on seized samples. |
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| Keywords: | MDMA Screen-Printed Electrodes Electrochemistry Forensics |
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