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Rapid determination of organotin compounds by headspace solid-phase microextraction.

Marjorie Le Gac1, Gaëtane Lespes, Martine Potin-Gautier

  • 1Laboratoire de Chimie Analytique, Bio-Inorganique et Environnement, UMR CNRS 5034, CURS, Avenue de l'Université, 64000 Pau, France. marjorie.le-gac@univ-pau.fr

Journal of Chromatography. A
|July 30, 2003
PubMed
Summary

This study presents a validated method using headspace solid-phase microextraction (SPME) and gas chromatography (GC) for sensitive organotin compound analysis. The technique offers low detection limits for environmental monitoring.

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Area of Science:

  • Environmental Chemistry
  • Analytical Chemistry

Background:

  • Organotin compounds are environmental contaminants.
  • Speciation analysis is crucial for understanding their impact.

Purpose of the Study:

  • To develop and validate a method for simultaneous speciation analysis of 14 organotin compounds.
  • To assess the suitability of headspace SPME-GC for environmental monitoring.

Main Methods:

  • Headspace solid-phase microextraction (SPME) followed by gas chromatography (GC) with pulsed flame photometric detection.
  • Optimization of analytical process using experimental designs.
  • Validation according to ISO standards and IUPAC recommendations.

Main Results:

  • Simultaneous determination of 14 organotin compounds achieved.

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  • Low limits of detection (LODs) obtained, widely below ng(Sn) l(-1).
  • Good precision (9-25% RSD) and validated accuracy for environmental samples.

    • Conclusions:

    • Headspace SPME-GC is an attractive technique for organotin determination.
    • The method is suitable for monitoring organotins in environmental matrices.
    • Enables understanding of organotin biogeochemical cycles.