Probing the Reactivity of Organic Particles Using Ion Soft-Landing
EMSL Project ID
30466
Abstract
Formation and atmospheric processing of particulate matter is one of the focus areas emphasized by EMSL. Organic coatings on atmospheric aerosols determine the surface chemistry that particles undergo during their lifecycle in the atmosphere. In particular, reactive and non-reactive uptake by particles and their ability to act as cloud or ice nuclei is determined by the types of functional groups present on the surface. Characterization of chemical composition and chemical transformations of organic aerosols (OA) is both a major challenge and the area of greatest uncertainty in current aerosol research. Because most analytical techniques provide bulk characterization of the composition of organic aerosols, obtaining information on the identity of the functional groups on the surface is even more challenging. The proposed project will focus on the development of a new method for probing the presence of reactive functional groups on the surface of organic aerosols and their proxies using reactive landing of mass-selected ions.
Project Details
Project type
Large-Scale EMSL Research
Start Date
2008-10-01
End Date
2011-09-30
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members
Related Publications
Hu Q, P Wang, PL Gassman, and J Laskin. 2009. "In situ Studies of Soft- and Reactive Landing of Mass-Selected Ions Using Infrared Reflection Absorption Spectroscopy." Analytical Chemistry 81(17):7302-7308. doi:10.1021/ac901149s
Johnson GE, and J Laskin. 2010. "Preparation of Surface Organometallic Catalysts by Gas-Phase Ligand Stripping and Reactive Landing of Mass-Selected Ions." Chemistry - A European Journal 16(48):14433-14438. doi:10.1002/chem.201002292
Johnson GE, M Lysonski, and J Laskin. 2010. "In Situ Reactivity and TOF SIMS Analysis of Surfaces Prepared by Soft and Reactive Landing of Mass Selected Ions." Analytical Chemistry 82(13):5718-5727. doi:10.1021/ac100734g
Laskin J, A Laskin, PJ Roach, GW Slysz, GA Anderson, S Nizkorodov, DL Bones, and L Nguyen. 2010. "High-Resolution Desorption Electrospray Ionization Mass Spectrometry for Chemical Characterization of Organic Aerosols." Analytical Chemistry 82(5):2048-2058. doi:10.1021/ac902801f
Laskin J, A Laskin, PJ Roach, GW Slysz, GA Anderson, S Nizkorodov, DL Bones, and L Nguyen. 2010. "High-Resolution Desorption Electrospray Ionization Mass Spectrometry for Chemical Characterization of Organic Aerosols." Analytical Chemistry 82(5):2048-2058. doi:10.1021/ac902801f