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Analysis of environmental air samples by solid-phase microextraction and gas-chromatography ion-trap mass-spectrometry

Chai, M. and Pawliszyn, J.
1995
Environmental Science & Technology 29 (3): 693-701

Chai, M. and Pawliszyn, J., (1995), "Analysis of environmental air samples by solid-phase microextraction and gas-chromatography ion-trap mass-spectrometry", Environmental Science & Technology 29 (3): 693-701.
Abstract:
A simple and efficient method for extraction and concentration of volatile organic compounds (VOCs) in air using solid-phase microextraction (SPME) has been developed. The analytes are extracted directly from the air and desorbed into a gas chromatograph for separation and quantification. This method requires minimal sample preparation time and, therefore, is suitable for on-site air monitoring. Analytes can be detected at the part per trillion (ppt) to sub part per billion (ppb) concentration levels with an ion trap mass spectrometer. The precision of the method was determined to be 1.5-6% relative standard deviation (RSD). Temperature and humidity effects were studied experimentally, and the method was compared with an EPA-validated method for selected VOCs. The SPME technique may be suitable for both spot sampling and integral exposure over time sampling. Integrated sampling has been successfully applied to the identification and quantification of toxic volatile organic compounds in environmental air samples.

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Author Information and Other Publications Notes
Chai, M.
     
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. Design and validation of portable SPME devices for rapid field air sampling and diffusion based calibration
  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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