## Abstract The performance of solidโphase microextraction (SPME) in combination with capillary gas chromatography (CGC) to quantify ropivacaine and its metabolites in human plasma was investigated. The analysis was performed using either a nitrogen phosphorus detector (NPD) or a massโspectrometric
Rapid and highly selective GC/MS/MS detection of heroin and its metabolites in hair
โ Scribed by A Polettini; A Groppi; M Montagna
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 536 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0379-0738
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โฆ Synopsis
A direct treatment of methanol-washed hair with a silylating solution is proposed to extract heroin, O-6-monoacetylmorphine, morphine, acetylcodeine, and codeine, obtaining the simultaneous derivatization of the hydroxylated metabolites and reducing potential sample contamination. Analysis is performed by capillary gas chromatography-tandem mass spectrometry (GC/MS/MS) using multiple selected reaction monitoring. Owing to the selectivity and sensitivity of the GC/MS/MS analysis, and to the extremely simple treatment of the sample, the method fulfils the requirements of both clinical and forensic diagnosis of heroin use.
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