An infrared spectroscopic approach to characterise white powders, easily applicable in the context of drug checking, drug prevention and on-site analysis.

Autor: Deconinck E; Scientific Direction Chemical and Physical Health Risks, Service of Medicines and Health Products, Sciensano, Brussels, Belgium.; RD3 Unit of Pharmacognosy, Bioanalysis and Drug Discovery, Faculty of Pharmacy, Université Libre de Bruxelles Campus de la Plaine, Brussels, Belgium., Aït-Kaci C; Scientific Direction Chemical and Physical Health Risks, Service of Medicines and Health Products, Sciensano, Brussels, Belgium.; RD3 Unit of Pharmacognosy, Bioanalysis and Drug Discovery, Faculty of Pharmacy, Université Libre de Bruxelles Campus de la Plaine, Brussels, Belgium., Raes A; Scientific Direction Chemical and Physical Health Risks, Service of Medicines and Health Products, Sciensano, Brussels, Belgium., Canfyn M; Scientific Direction Chemical and Physical Health Risks, Service of Medicines and Health Products, Sciensano, Brussels, Belgium., Bothy JL; Scientific Direction Chemical and Physical Health Risks, Service of Medicines and Health Products, Sciensano, Brussels, Belgium., Duchateau C; Scientific Direction Chemical and Physical Health Risks, Service of Medicines and Health Products, Sciensano, Brussels, Belgium.; RD3 Unit of Pharmacognosy, Bioanalysis and Drug Discovery, Faculty of Pharmacy, Université Libre de Bruxelles Campus de la Plaine, Brussels, Belgium., Mees C; RD3 Unit of Pharmacognosy, Bioanalysis and Drug Discovery, Faculty of Pharmacy, Université Libre de Bruxelles Campus de la Plaine, Brussels, Belgium., De Braekeleer K; RD3 Unit of Pharmacognosy, Bioanalysis and Drug Discovery, Faculty of Pharmacy, Université Libre de Bruxelles Campus de la Plaine, Brussels, Belgium., Gremaux L; Scientific Direction Epidemiology and Public Health, Section Lifestyle and Chronic Diseases, Sciensano, Brussels, Belgium., Blanckaert P; Scientific Direction Epidemiology and Public Health, Section Lifestyle and Chronic Diseases, Sciensano, Brussels, Belgium.
Jazyk: angličtina
Zdroj: Drug testing and analysis [Drug Test Anal] 2021 Mar; Vol. 13 (3), pp. 679-693. Date of Electronic Publication: 2020 Nov 24.
DOI: 10.1002/dta.2973
Abstrakt: More and more events, such as the summer music festivals, are considering the possibilities for implementing on-site testing of psychoactive drugs in the context of prevention and harm reduction. Although the on-site identification is already implemented by plenty of drug checking services, the required rapid quantitative dosing of the composition of illicit substances is still a missing aspect for a successful harm reduction strategy at events. In this paper, an approach is presented to identify white powders as amphetamine, cocaine, ketamine or others and to estimate the purity of the amphetamine, cocaine and ketamine samples using spectroscopic techniques hyphenated with partial least squares (PLS) modelling. For identification purposes, it was observed that mid-infrared spectroscopy hyphenated with PLS-discriminant analysis allowed the distinction between amphetamine, cocaine, ketamine and other samples and this with a correct classification rate of 93.1% for an external test set. For quantitative estimation, near-infrared spectroscopy was more performant and allowed the estimation of the dosage/purity of the amphetamine, cocaine and ketamine samples with an error of more or less 10% w/w. An easily applicable, practical and cost-effective approach for on-site characterisation of the majority of the psychoactive samples encountered in Belgian nightlife settings based on IR spectroscopy was proposed.
(© 2020 John Wiley & Sons Ltd.)
Databáze: MEDLINE
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