Open port sampling interface mass spectrometry of wipe-based explosives, oxidizers, and narcotics for trace contraband detection.

ABSTRACT: Rapid screening for chemical traces of explosives and narcotics is widely used to support homeland security and law enforcement. These target compounds span a range of physicochemical properties from organic to inorganic, with preferential ionization pathways in both negative and positive mode operation. Nonvolatile inorganic oxidizers present in homemade fuel-oxidizer mixtures, pyrotechnics, and propellants create a unique challenge to traditional thermal desorption-based technologies. Developments in solid-liquid extraction techniques, specifically, open port sampling interface mass spectrometry (OPSI-MS) provide compelling capabilities to address these hurdles. In this proof of concept study, we investigated the trace detection of wipe-based (i.e., common swipe sampling collection metho

SUBMITTER: Forbes TP 

PROVIDER: S-EPMC9972214 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature