Enantioselective determination of methylphenidate and ritalinic acid in whole blood from forensic cases using automated solid-phase extraction and liquid chromatography-tandem mass spectrometry.

Détails

ID Serval
serval:BIB_029A4EECA3B6
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Enantioselective determination of methylphenidate and ritalinic acid in whole blood from forensic cases using automated solid-phase extraction and liquid chromatography-tandem mass spectrometry.
Périodique
Journal of analytical toxicology
Auteur⸱e⸱s
Thomsen R., Rasmussen H.B., Linnet K.
Collaborateur⸱rice⸱s
INDICES Consortium
Contributeur⸱rice⸱s
Rasmussen H.B., Linnet K., Thomsen R., Jürgens G., Dalhoff K., Stage C., Stefansson H., Hankemeier T., Kaddurah-Daouk R., Brunak S., Taboureau O., Houmann T., Jeppesen P., Kaalund-Jørgensen K., Rindel L., Hansen P.R., Pagsberg A.K., Plessen K., Hansen P.E.
ISSN
1945-2403 (Electronic)
ISSN-L
0146-4760
Statut éditorial
Publié
Date de publication
10/2012
Peer-reviewed
Oui
Volume
36
Numéro
8
Pages
560-568
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't ; Validation Studies
Publication Status: ppublish
Résumé
A chiral liquid chromatography tandem mass spectrometry (LC-MS-MS) method was developed and validated for quantifying methylphenidate and its major metabolite ritalinic acid in blood from forensic cases. Blood samples were prepared in a fully automated system by protein precipitation followed by solid-phase extraction. The LC-MS-MS method was linear in the range of 0.5 to 500 ng/g for the enantiomers of both analytes. For concentrations above the limit of quantification, coefficients of variation were 15% or less, and the accuracy was 89 to 94%. For 12 postmortem samples in which methylphenidate was not determined to be related to the cause of death, the femoral blood concentration of d-methylphenidate ranged from 5 to 58 ng/g, and from undetected to 48 ng/g for l-methylphenidate (median d/l-ratio 5.9). Ritalinic acid was present at concentrations 10-20 times higher with roughly equal amounts of the d- and l-forms. In blood from 10 living subjects that were not suspected of being intoxicated by methylphenidate, the concentration ranges and patterns were similar to those of the postmortem cases. Thus, methylphenidate does not appear to undergo significant postmortem redistribution.
Mots-clé
Adolescent, Adult, Central Nervous System Stimulants/blood, Chromatography, High Pressure Liquid, Female, Forensic Toxicology/methods, Humans, Limit of Detection, Male, Methylphenidate/analogs & derivatives, Methylphenidate/blood, Middle Aged, Reproducibility of Results, Solid Phase Extraction/methods, Stereoisomerism, Substance Abuse Detection/methods, Tandem Mass Spectrometry/methods, Young Adult
Pubmed
Web of science
Open Access
Oui
Création de la notice
14/02/2019 9:44
Dernière modification de la notice
20/08/2019 12:24
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