title: Mechanical modulation for multiplex gas chromatographic analyses at subatmospheric pressures.
authors.affiliation: National Aeronautics and Space Administration, Ames Research Center, Moffett Field, California 94035, USA.
authors.forename: J R
authors.initials: JR
authors.lastname: Valentin
authors.forename: K W
authors.initials: KW
authors.lastname: Hall
mesh_terms: D000473:Alkanes / Q000032:analysis*; D001272:Atmosphere / Q000032:analysis*; D001274:Atmospheric Pressure; D002073:Butanes / Q000032:analysis; D002138:Calibration; D002849:Chromatography, Gas / Q000295:instrumentation / Q000379:methods*; D004980:Ethane / Q000032:analysis; D005069:Evaluation Studies as Topic; D005118:Extraterrestrial Environment; D008697:Methane / Q000032:analysis; D016083:Planets; D011407:Propane / Q000032:analysis; D018539:Saturn; D013026:Space Flight / Q000295:instrumentation; D018531:Spacecraft / Q000295:instrumentation*
chemical_list: D000473:Alkanes; D002073:Butanes; C046888:butane; D004980:Ethane; D008697:Methane; D011407:Propane