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Design and validation of portable SPME devices for rapid field air sampling and diffusion based calibration

Augusto, F., Koziel, J. and Pawliszyn, J.
2001
ANALYTICAL CHEMISTRY 73 (3): 481-486

Augusto, F., Koziel, J. and Pawliszyn, J., (2001), "Design and validation of portable SPME devices for rapid field air sampling and diffusion based calibration", ANALYTICAL CHEMISTRY 73 (3): 481-486.
Abstract:
The use of SPME fibers coated with porous polymer solid phases for quantitative purposes is limited due to effects such as interanalyte displacement and competitive adsorption. For air analysis, these problems can be averted by employing short exposure times to air samples flowing around the fiber. In these conditions, a simple mathematical model allows quantification without the need of calibration curves. This work describes two portable dynamic air sampling (PDAS) devices designed for application of this approach to nonequilibrium SPME sampling and determination of airborne volatile organic compounds (VOCs). The use of a PDAS device resulted in greater adsorbed VOC mass compared to the conventional SPME extraction in static air for qualitative screening of live plant aromas and contaminants in indoor air. For all studied air samples, an increase in the number of detected compounds and sensitivity was also observed. Quantification of aromatic VOCs in indoor air was also carried out using this approach and the PDAS/SPME device. Measured VOC concentrations were in lour parts-per-billion by volume range using only 30-s SPME fiber exposure and were comparable to those obtained with a standard NIOSH method 1501. The use of PDAS/SPME devices reduced the total air sampling and analysis time by several orders of magnitude compared to the NIOSH 1501 method.

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Author Information and Other Publications Notes
Augusto, F.
     
Koziel, J.
  1. Air sampling with porous solid-phase microextraction fibers
  2. Fast field sampling/sample preparation and quantification of volatile organic compounds in indoor air by solid-phase microextraction and portable gas chromatography
  3. Sampling and sample-preparation strategies based on solid-phase microextraction for analysis of indoor air  
Pawliszyn, J.
Department of Chemistry, University of Waterloo, ON, Canada. janusz@uwaterloo.ca
  1. A laboratory technique for investigation of diffusion and transformation of volatile organic compounds in low permeability media
  2. Air sampling with porous solid-phase microextraction fibers
  3. Analysis of environmental air samples by solid-phase microextraction and gas-chromatography ion-trap mass-spectrometry
  4. Evolution of solid-phase microextraction technology
  5. Fast field sampling/sample preparation and quantification of volatile organic compounds in indoor air by solid-phase microextraction and portable gas chromatography
  6. New trends in solid-phase microextraction
  7. Recent advances in solid phase microextraction and membrane extraction with a sorbent interface
  8. Solid phase microextraction  


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