title: Electronic coupling and scaling effects during dielectric barrier electrospray ionization.
abstract: The mechanism of the previously published technique of dielectric barrier electrospray ionization (DB-ESI) was investigated in more detail. Two independent current signals occurring during the DB-ESI could be explained and allocated to sub-processes. The modulated shape of the HV signal, the applied frequency as well as the inner diameter of the emitter capillary have a big impact on the spray. Furthermore, there exists a cut-off frequency which depends on the electronic properties of the DB-ESI interface. Comparable mass spectra for lysine employing both conventional ESI and DB-ESI show a good analytical potential of the new technique.
authors.affiliation: Leibniz-Institut für Analytische Wissenschaften-ISAS-e.V., Otto-Hahn-Str. 6b, 44227 Dortmund, Germany.
authors.forename: A K
authors.initials: AK
authors.lastname: Stark
authors.forename: C
authors.initials: C
authors.lastname: Meyer
authors.forename: T
authors.initials: T
authors.lastname: Kraehling
authors.forename: G
authors.initials: G
authors.lastname: Jestel
authors.forename: U
authors.initials: U
authors.lastname: Marggraf
authors.forename: M
authors.initials: M
authors.lastname: Schilling
authors.forename: D
authors.initials: D
authors.lastname: Janasek
authors.forename: J
authors.initials: J
authors.lastname: Franzke