US EPA

1963050 

Journal Article 

Field air analysis with SPME device 

Koziel, J; Jia, MY; Khaled, A; Noah, J; Pawliszyn, J 

1999 

Yes 

Analytica Chimica Acta
ISSN: 0003-2670
EISSN: 1873-4324 

400 

1-3 

153-162 

English 

10.1016/S0003-2670(99)00614-5 

WOS:000084204200015 

Solid-phase microextraction (SPME) devices were used for a wide scope of air-monitoring including field sampling and analysis of volatile organic compounds (VOCs), formaldehyde, and particulate matter (PM) in air. Grab (instantaneous) and time-weighted average (TWA) sampling were accomplished using exposed and retracted SPME fibers, respectively. Sampling time varied from 1 to 75 min, followed by analysis with a gas chromatograph (GC). A portable GC equipped with unique, in-series detectors: photoionization (PID), flame ionization (FID), and dry electrolytic conductivity (DELCD), provided almost real-time analysis and speciation for common VOCs during an indoor air quality surveys. Indoor air samples collected with SPME devices were compared with those collected using conventional National Institute for Occupational Safety and Health (NIOSH) methods. Air concentrations measured with the SPME device were as low as 700 parts-per-trillion (ppt) for semi-volatile organic compounds. SPME methodology proved to be more sensitive than conventional methods, and provided a simple approach for fast, cost-effective sampling and analysis of common VOCs in indoor air. SPME technology combined with fast portable GC reduced the sampling and analysis time to less than 15 min. The configuration offered the conveniences of immediate on-site monitoring and decision making, that are not possible with conventional methods. In addition, SPME fibers were applied to sampling of particulate matter in diesel engine exhaust. Linear uptake and particulate build-up on the fiber were observed. Preliminary research suggests that SPME fibers could also be applied to sampling of airborne particulate matter. (C) 1999 Elsevier Science B.V. All rights reserved. 

air analysis; formaldehyde; indoor air quality; particulate matter; solid-phase microextraction; volatile organic compounds 

Measurement for the Next Millennium - International Symposium Celebrating the 3rd Millennium 

Egmond, Netherlands 

April 14-16, 1999