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Silva, Weberson P.; Rocha, Raquel G.; Arantes, Luciano C.; Lima, Camila D.; Melo, Larissa M.A.; Munoz, Rodrigo A.A.; dos Santos, Wallans T.P.; Richter, Eduardo M.
Talanta (Oxford), 10/2021, Volume: 233Journal Article
1-(3-chlorophenyl) piperazine (mCPP) is a synthetic drug with hallucinogenic effects that has often been found in seized samples. In this context, easy to use point-of-care tests can be of great value in preliminary forensic analysis. Herein, we proposed a simple, fast, and portable electrochemical method for the detection of mCPP in seized samples. The method is based on the use of disposable screen-printed carbon electrodes (SPCE) and rapid screening procedures by square-wave voltammetry using minimal sample sizes (100 μL). mCPP showed an irreversible electrochemical oxidation process at +0.65 V on SPCE (vs Ag) using 0.04 mol L−1 Britton Robinson (BR) buffer solution (pH 7) as the supporting electrolyte. The proposed method exhibited a linear correlation (r = 0.998) between peak current and mCPP concentration in the range of 1–30 μmol L−1 (LOD = 0.1 μmol L−1). Interference studies were performed for adulterants and other classes of drugs of abuse, which can also be found in seized samples containing mCPP, such as caffeine, amphetamine, methamphetamine, 1-benzylpiperazine, 3,4-methylenedioxymethamphetamine, methylone, mephedrone, ethylone and 3, 4-methylenedioxypyrovalerone. The developed method presents great potential as a rapid and simple screening tool to detect mCPP in forensic samples. Display omitted •Portable electrochemical method for forensic applications.•The proposed method requires simple sample preparation procedure (dissolution and dilution in electrolyte).•Fast and simple screening test.
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