title: Investigation of enhanced ion abundances from a carrier process in high-performance liquid chromatography particle beam mass spectrometry.
abstract: Enhancements in ion abundances in high-performance liquid chromatography (HPLC) particle beam (PB) mass spectrometry were observed during coelution or when certain substances (e.g., ammonium acetate) were added to the mobile phase during a reverse-phase gradient elution HPLC separation. These enhancements were observed with two commercial PB interfaces and a variety of compounds generally not amenable to separation by gas chromatography. The enhancements are attributed to both improved chromatographic efficiency and a PB carrier process.
authors.affiliation: Office of Research and Development USEPA-Cincinnati, Environmental Monitoring Systems Laboratory, U.S. Environmental Protection Agency, 26 W. Martin Luther King Drive, 45268, Cincinnati, OH, USA.
authors.forename: T A
authors.initials: TA
authors.lastname: Bellar
authors.forename: T D
authors.initials: TD
authors.lastname: Behymer
authors.forename: W L
authors.initials: WL
authors.lastname: Budde