Hapsite Gas Chromatography - Mass Spectrometry with Solid Phase Microextraction
Abstract
Rapid air sampling can be accomplished with solid phase microextraction (SPME) to avoid the difficulties of pumps and wet chemistry. Gas chromatography with mass spectrometry (GC/MS) is the gold standard for identifying volatile and semi volatile chemicals. Combining SPME with a portable HAPSITE GC/MS may allow rapid chemical identification outside of a laboratory. Six chemicals at six concentrations were tested using four sample introduction methods. The four methods included the HAPSITE loop, the HAPSITE with tri-bed concentrator, the HAPSITE with SPME and a field portable GC/MS with SPME. The SPME fiber used was Polydimethylsiloxane (PDMS). The HAPSITE with tri-bed concentrator achieved the lowest detection limits. The HAPSITE and the field portable GC/MS instrument coupled with SPME had similar variability. The relative standard deviation for these instruments was under 25% for most chemicals with concentrations between 1-10 ppm.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 18, 2005
- Accession Number
- ADA435802
Entities
People
- Gary L. Hook
- Waikwong Kan
Organizations
- Uniformed Services University of the Health Sciences