title: An atmospheric pressure ion lens that improves nebulizer assisted electrospray ion sources.
abstract: An atmospheric pressure ion lens improves the performance and ease of use of a nebulizer assisted electrospray (ion spray) ion source. The lens is comprised of an oblong-shaped stainless steel ring attached to an external high voltage power supply. The lens is located near the tip of the conductive sprayer, and is maintained at a potential less than that of the sprayer. The ion lens improves the shape of the equipotential lines in the vicinity of the sprayer tip. This lens gives approximately a 2-fold reduction in the signal RSD, a 2-fold increase in the ion signal, an increase in the number of multiply charged ions, and a much broader range of usable sprayer positions.
authors.affiliation: Department of Chemistry, University of British Columbia, Vancouver, Canada.
authors.forename: Bradley B
authors.initials: BB
authors.lastname: Schneider
authors.forename: D J
authors.initials: DJ
authors.lastname: Douglas
authors.forename: David D Y
authors.initials: DD
authors.lastname: Chen