title: A device for monitoring selected peaks in repetitively scanned mass spectra.
abstract: A selective ion monitor for the Perkin-Elmer Model 270 gas chromatograph mass spectrometer is described.
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry / Q000295:instrumentation; D007477:Ions; D013058:Mass Spectrometry / Q000295:instrumentation*; D008722:Methods; D008991:Monitoring, Physiologic
chemical_list: D007477:Ions