title: Characterization of dielectric barrier electrospray ionization for mass spectrometric detection.
abstract: A novel electrospray interface is presented which induces an electric field by dielectric polarization through a non-conductive barrier. Therefore, a square-wave high-voltage signal is applied. This technique allows mass spectrometric measurements in the positive as well as in the negative mass spectrometry mode without changing the polarity of the potential applied, and it decreases the risk of undesired discharges, induced by high electric currents. The applicability of this technique is demonstrated by mass spectrometric determination of reserpine.
authors.affiliation: Miniaturisation, ISAS Leibniz Institut für Analytische Wissenschaften, Otto-Hahn-Str. 6b, 44227, Dortmund, Germany.
authors.forename: Ann Kathrin
authors.initials: AK
authors.lastname: Stark
authors.forename: Michael
authors.initials: M
authors.lastname: Schilling
authors.forename: Dirk
authors.initials: D
authors.lastname: Janasek
authors.forename: Joachim
authors.initials: J
authors.lastname: Franzke