title: Silver nanoparticles as selective ionization probes for analysis of olefins by mass spectrometry.
abstract: Laser desorption/ionization (LDI) using silver nanoparticles (AgNPs) is shown to selectively ionize olefinic compounds, e.g., cholesterol, 1-palmitoyl-2-oleoyl- sn-glycero-3-phosphocholine (POPC), and carotenoids. Selective AgNP LDI can be carried out from complex mixtures without the addition of an organic matrix, sample cleanup, or prefractionation. Results presented in this report are the first to demonstrate the selective ionization of specific compounds from a complex mixture using metal nanoparticles.
authors.affiliation: Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77843, USA.
authors.forename: Stacy D
authors.initials: SD
authors.lastname: Sherrod
authors.forename: Arnaldo J
authors.initials: AJ
authors.lastname: Diaz
authors.forename: William K
authors.initials: WK
authors.lastname: Russell
authors.forename: Paul S
authors.initials: PS
authors.lastname: Cremer
authors.forename: David H
authors.initials: DH
authors.lastname: Russell