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GC-MS Method for Quantification of Mephedrone in Human Blood Sample
1Forensic Chemistry Department, College of Forensic Sciences, Naif Arab University for Security Sciences, Riyadh 11452, Saudi Arabia.
Journal of Chromatographic Science
|May 19, 2017
Summary
A new gas chromatography-mass spectrometry method accurately detects mephedrone (4-methylmethcathinone) in blood. This rapid technique is crucial for forensic toxicology and clinical analysis of mephedrone abuse.
Area of Science:
- Forensic Chemistry
- Analytical Chemistry
- Toxicology
Background:
- Mephedrone (4-methylmethcathinone) abuse is a growing concern, with reported intoxications and fatalities.
- Reliable analytical methods are essential for detecting mephedrone in biological samples.
Purpose of the Study:
- To develop and validate a simple, rapid gas chromatography-mass spectrometry (GC-MS) method for mephedrone detection and quantification in human blood.
- To establish a reliable method for forensic and clinical toxicology.
Main Methods:
- Human blood samples were deproteinated with acetonitrile.
- Supernatant underwent single-step derivatization and extraction using ethyl chloroformate and ethyl acetate.
- Methamphetamine-d5 served as the internal standard (IS).
- Quantification utilized characteristic ions (m/z 58, 119, 130 for mephedrone; m/z 62, 92, 134 for IS).
Main Results:
- The GC-MS method demonstrated linearity over a 10-2,000 ng/mL concentration range.
- High precision (intra-assay %RSD: 10.9-11.9; inter-assay %RSD: 9.2-11.2) and accuracy (intra-assay %Bias: 1.8-2.8) were achieved.
- The method was successfully applied to real blood samples.
Conclusions:
- A simple, rapid, and accurate GC-MS method for mephedrone analysis in human blood has been established.
- This validated method is suitable for routine forensic and clinical toxicology applications.
- The method aids in identifying and quantifying mephedrone in cases of suspected abuse.
