title: Collection method for chemical particulates on surfaces with detection using thermal desorption-ion trap mass spectrometry.
abstract: Successful analysis of particulate/low vapor pressure analytes such as explosives and toxic chemicals, and commercial pesticides require new sampling tools that enable detection of these analytes using current vapor phase detection instruments. We describe a sampling approach that uses stainless steel screens coated with a sticky polydimethyl siloxane (PDMS) coating to capture particulates from surfaces. Preliminary results for the collection of dimethyl methylphosphonate (DMMP) sorbed onto silica gel (SG) particulates (DMMP/SG) from a surface with subsequent analysis by thermal desorption-cylindrical ion trap mass spectrometry (TD-CITMS) are reported.
authors.affiliation: Naval Research Laboratory, Washington, DC, United States. ken.ewing@nrl.navy.mil
authors.forename: K J
authors.initials: KJ
authors.lastname: Ewing
authors.forename: D
authors.initials: D
authors.lastname: Gibson
authors.forename: J
authors.initials: J
authors.lastname: Sanghera
authors.forename: F
authors.initials: F
authors.lastname: Miklos
mesh_terms: D002619:Chemical Warfare Agents / Q000032:analysis*; D007477:Ions / Q000737:chemistry; D013058:Mass Spectrometry / Q000295:instrumentation / Q000379:methods*; D009943:Organophosphorus Compounds / Q000737:chemistry; D058428:Silica Gel / Q000737:chemistry; D013499:Surface Properties; D013696:Temperature
chemical_list: D002619:Chemical Warfare Agents; D007477:Ions; D009943:Organophosphorus Compounds; C031116:dimethyl methylphosphonate; D058428:Silica Gel