Publication - Journal Article Selective Reagent Ions for the Direct Vapor Detection of Organophosphorus Compounds Below Parts-per-Trillion Levels DOI https://doi.org/10.1021/acs.analchem.8b01265 Journal Article Analytical Chemistry, vol. 90, iss. 12, pp. 7583-7590, 2018 Authors Robert G. Ewing, Blandina R. Valenzuela Language English