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Study for practical use of two chiral analyses of amphetamines by gas chromatography-mass spectrometry

Research Project

Project/Area Number 17590588
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Legal medicine
Research InstitutionFukuoka University

Principal Investigator

KASHIMURA Seiichi  Fukuoka University, Faculty of Medicine, Professor, 医学部, 教授 (70004710)

Co-Investigator(Kenkyū-buntansha) HARA Kenji  Fukuoka University, Faculty of Medicine, Lecturer, 医学部, 講師 (00090738)
Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2006: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2005: ¥2,200,000 (Direct Cost: ¥2,200,000)
Keywordsamphetamine / methamphetamine / chiral isomers / analysis / GC-MS / derivative / capillary column / internal standard / アンフェタミン / メタンフェタミン
Research Abstract

Amphetamines possess respectively symmetric isomers (enantiomers). Usually, d-enantiomers are taken by stimulant abusers. L-enantiomers are rarely abused, but the compounds are possible to be detected in toxicological analysis. L-methamphetamine and l-amphetamine, because, are also main metabolites of a therapeutic drug, selegiline. It is important to distinguish the abused drugs with the therapeutic drugs in forensic toxicological analysis. We have been developing two methods for chiral analysis of amphetamines by gas chromatography-mass spectrometry (GC/MS). Those trial methods were successfully prepared, but the chromatographic performances were time-consuming. Therefore, we attempted to shorten the chromatographic periods on those methods. Method I : A sample solution was pH-adjusted at 12.6 then applied to a diatomaceous earth column and extracted with trifluoroacetylprolylation. The derivatized amphetamines were analyzed by GC/MS with a DB-5 narrow-bore column at a high-pressure for first chromatographic performance. Method II : A sample solution was placed in a headspace vial containing a heap of sodium chloride, alkalized (not strong) and added heptaflurobutyryl chloride. The vial was set onto an auto-sampler for solid-phase microextraction (SPME) for GC/MS analyzing in a chiral column Rt-betaDEXsm (0.25 mm i.d. x 30 m, film thickness 0.25 μm). In this case, amphetamines were detected as heptafluorobutyryl derivatives. In method I, distinguishable enantiomer peaks with very short periods were observed. In method II, the observed peaks were faster than conventional conditions. As regular chiral analysis, method I is superior to method II. Meanwhile, method II is useful for forensic toxicological analysis using putrefied or decomposed body materials.

Report

(3 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • Research Products

    (2 results)

All 2006

All Journal Article (2 results)

  • [Journal Article] Two simple methods for enantiomeric analyses of urinary amphetamines by GC/MS using deuterium-labeled L-amphetamines as internal standards2006

    • Author(s)
      Liu Z, Hara K, Kashimura S, Liu J, Fujii H他4名
    • Journal Title

      Forensic Toxicology 24・1

      Pages: 2-7

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Two simple methods for enantiomeric analyses of urinary amphetamines by GC/MS using deuterium-labeled L-amphetamines as internal standards2006

    • Author(s)
      Liu Z, Hara K, Kashimura S, Liu J, Fujii H, Kashiwagi M, Miyoshi A, Yanai T, Kageura M.
    • Journal Title

      Forensic Toxicology(Springer) 24・1

      Pages: 2-7

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary

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Published: 2005-04-01   Modified: 2016-04-21  

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