title: Identification of impurities in phenylacetylene by species-selected mass-analyzed threshold ionization spectroscopy.
abstract: Two-color resonant two-photon mass-analyzed threshold ionization (MATI) spectroscopy was used to identify styrene impurities in a commercial phenylacetylene sample. With the mass-gating setup, the recorded MATI spectra are free of contamination from molecules of different mass. Analysis of these spectra gives information on the precise adiabatic ionization and the active cation vibrations, which can be used as fingerprints for the identification of molecular ions.
authors: Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-166, Taipei 106, Taiwan, Republic of China.
authors: Jung Lee
authors: JL
authors: Lin
authors: Wen Bih
authors: WB
authors: Tzeng
mesh_terms: D000114:Acetylene / Q000031:analogs & derivatives* / Q000032:analysis* / Q000737:chemistry; D003198:Computer Simulation; D004340:Drug Contamination; D008958:Models, Molecular; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization / Q000379:methods*; D013056:Spectrophotometry, Ultraviolet / Q000379:methods*; D013343:Styrenes / Q000032:analysis* / Q000737:chemistry
chemical_list: D013343:Styrenes; C044736:phenylacetylene; D000114:Acetylene