title: Solid state chemical ionization for characterization of organic compounds by laser mass spectrometry.
abstract: A new technique involving the addition of a compound to the analyte to serve as a source of "reagent" ions has been developed for negative-ion laser mass spectrometry. This "solid state chemical ionization" leads to ions characteristic of the analyte, owing to ion-molecule reactions between the "reagent" ion and the neutral analyte in the laser-generated plume. Polycyclic aromatic hydrocarbons show formation of an ion corresponding to (M + O - H)(-) in their negative-ion laser mass spectra when mixed with compounds such as sym-trinitrobenzene, sodium nitrate and sodium peroxide. NO(-)(2), O(-), and O(-)(2) serve as "reagent" ions in these compounds. Formation of (M + Cl)(-) is seen in the laser mass spectra of glycosides mixed with hexachlorobenzene. Chloride serves as the "reagent" ion in this case.
authors.affiliation: Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, U.S.A.
authors.forename: K
authors.initials: K
authors.lastname: Balasanmugam
authors.forename: S K
authors.initials: SK
authors.lastname: Viswanadham
authors.forename: D M
authors.initials: DM
authors.lastname: Hercules