Universität zu Köln

Gaunitz, Franziska, Kieliba, Tobias ORCID: 0000-0002-9238-5336, Thevis, Mario and Mercer-Chalmers-Bender, Katja ORCID: 0000-0002-3843-9065 (2020). Solid-phase extraction-liquid chromatography-tandem mass spectrometry method for the qualitative analysis of 61 synthetic cannabinoid metabolites in urine. Drug Test. Anal., 12 (1). S. 27 - 41. HOBOKEN: WILEY. ISSN 1942-7611

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Abstract

This article comprises the development and validation of a protocol for the qualitative analysis of 61 phase I synthetic cannabinoid metabolites in urine originating from 29 synthetic cannabinoids, combining solid-phase extraction (SPE) utilizing a reversed phase silica-based sorbent (phenyl) with liquid chromatography-tandem mass spectrometry (LC-MS/MS). Validation was performed according to the guidelines of the German Society of Toxicological and Forensic Chemistry. Sufficient chromatographic separation was achieved within a total runtime of 12.3 minutes. Validation included specificity and selectivity, limit of detection (LOD), recovery and matrix effects, as well as auto-sampler stability of processed urine samples. LOD ranged between 0.025 ng/mL and 0.5 ng/mL in urine. Recovery ranged between 43% and 97%, with only two analytes exhibiting recoveries below 50%. However, for those two analytes, the LODs were 0.05 ng/mL in urine. In addition, matrix effects between 81% and 185% were determined, whereby matrix effects over 125% were observed for 10 non-first-generation synthetic cannabinoid metabolites. The developed method enables the rapid and sensitive detection of synthetic cannabinoid metabolites in urine, complementing the spectrum of existing analytical tools in forensic case work. Finally, application to 61 urine samples from both routine and autopsy case work yielded one urine sample that tested positive for ADB-PINACA N-pentanoic acid.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Gaunitz, Franziska UNSPECIFIED UNSPECIFIED UNSPECIFIED Kieliba, Tobias UNSPECIFIED orcid.org/0000-0002-9238-5336 UNSPECIFIED Thevis, Mario UNSPECIFIED UNSPECIFIED UNSPECIFIED Mercer-Chalmers-Bender, Katja UNSPECIFIED orcid.org/0000-0002-3843-9065 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-130667
DOI:	10.1002/dta.2680
Journal or Publication Title:	Drug Test. Anal.
Volume:	12
Number:	1
Page Range:	S. 27 - 41
Date:	2020
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	1942-7611
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language QUANTITATIVE MEASUREMENT; PSYCHOACTIVE SUBSTANCES; COMPREHENSIVE ANALYSIS; HUMAN HEPATOCYTES; MS/MS METHOD; AB-PINACA; IN-VITRO; LC-MS/MS; JWH-018; DRUGS Multiple languages Biochemical Research Methods; Chemistry, Analytical; Pharmacology & Pharmacy Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/13066