Selective stationary phase for solid-phase microextraction analysis of sarin (GB).
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 non-selective 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.
Harvey
S D
SD
Pacific Northwest National Laboratory, Richland, WA 99352, USA. scott.harvey@pnl.gov
Nelson
D A
DA
Wright
B W
BW
Grate
J W
JW
D000388:Air / Q000032:analysis; D002619:Chemical Warfare Agents / Q000302:isolation & purification*; D002849:Chromatography, Gas / Q000379:methods*; D002850:Chromatography, Gel / Q000379:methods*; D012524:Sarin / Q000302:isolation & purification*
D002619:Chemical Warfare Agents; D012524:Sarin