A number of critical field applications require monitoring air samples for trace levels of chemical warfare agents. Solid-phase microextraction (SPME) is a convenient format to conduct these analyses. Measurements could be significantly improved if a SPME phase selective for nerve agents were substituted for nonselective polymers typically used (e.g., polydimethylsiloxane). This paper evaluates a novel stationary phase, previously developed for methylphosphonate sensor applications, for use with SPME sampling. The phenol-based polymer, BSP3, was found to offer far higher selectivity toward sarin (GB) than polydimethylsiloxane due to a pronounced affinity toward the target analyte and a lower affinity toward hydrocarbons.
Revised: March 2, 2012 |
Published: March 2, 2002
Citation
Harvey S., D.A. Nelson, B.W. Wright, and J.W. Gates. 2002.Selective Stationary Phase for Solid-Phase Microextraction Analysis of Sarin (GB).Journal of Chromatography A 954, no. 1-2:217-225.PNNL-SA-35205.doi:10.1016/S0021-9673(02)00188-7