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Related Experiment Videos

Method optimization for the analysis of amphetamines in urine by solid-phase microextraction

H L Lord1, J Pawliszyn

  • 1Guelph-Waterloo Centre for Graduate Work in Chemistry, Department of Chemistry, University of Waterloo, Ontario, Canada.

Analytical Chemistry
|October 10, 1997
PubMed
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Optimized solid-phase microextraction methods enable reliable analysis of amphetamines and related drugs. This technique offers high sensitivity and accuracy for complex samples like clinical urine.

Area of Science:

  • Analytical Chemistry
  • Forensic Science

Background:

  • Solid-phase microextraction (SPME) is a versatile technique for analyzing diverse compounds.
  • Challenges exist for analyzing polar semivolatiles, including amphetamines, due to low partition coefficients and long equilibration times.

Purpose of the Study:

  • To optimize SPME methods for the sensitive and reliable analysis of amphetamine and methamphetamine.
  • To address limitations in analyzing polar semivolatiles in complex matrices.

Main Methods:

  • Investigated headspace SPME with modifications including matrix heating, stirring, methanol content, salt addition, and pH buffering.
  • Analyzed clinical urine samples to assess method performance.

Main Results:

  • Optimized conditions provided excellent sensitivity, low limits of detection, and good method linearity for amphetamines.

Related Experiment Videos

  • Successful analysis of clinical urine samples yielded clean chromatograms without interfering peaks.
  • The developed method also proved effective for analyzing narcotic analgesics.

    • Conclusions:

    • Modified headspace SPME is a robust technique for reliable amphetamine and methamphetamine quantification.
    • The method demonstrates potential for a broad screening of drugs of abuse in clinical and forensic settings.