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

Abstract

The electrochemical quantification of new psychoactive substances (NPS), 2,5-dimethoxy-N-(2-methoxybenzyl) phenethylamines, commonly described as NBOMes and their correlates, 2,5-dimethoxy phenethylamine structures (2C-X groups), in seized blotting paper is presented using square-wave voltammetry (SWV) on boron-doped diamond (BDD) electrode. Under the optimized experimental conditions, linear analytical curves were obtained in the range from 1 to 555 μmol L−1 for three NBOMes and 2C-B with detection limit values between 0.1 and 0.3 µmol L−1 (corresponding to 0.03 and 0.10 µg mL-1) and repeatability of around 1 % (n=10) for detection of all analytes. The accuracy of the proposed method was evaluated using seized samples, which were also analyzed by liquid chromatography-mass spectrometry, with perfect agreement, and free from interference of sample matrix (recovery values between 98 and 110%).

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Publication details

The article was received on 20 Feb 2018, accepted on 14 Apr 2018 and first published on 16 Apr 2018


Article type: Paper
DOI: 10.1039/C8AY00385H
Citation: Anal. Methods, 2018, Accepted Manuscript
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    Electrochemical sensing of NBOMes and other new psychoactive substances in blotting paper by square-wave voltammetry on boron-doped diamond electrode

    G. Andrade, D. M. Pimentel, A. Lima, T. J. Guedes, L. Arantes, A. Oliveira, R. M. F. Sousa, W. T. P. dos Santos and R. A. A. Munoz, Anal. Methods, 2018, Accepted Manuscript , DOI: 10.1039/C8AY00385H

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