Two postdoctoral positions in atmospheric chemistry are available at the
Department of Environmental Sciences, in the Weizmann Institute of Science.
The positions are for one to two years. Successful applicants will be
involved in the following research projects:
1. Studying the chemical processes of organic aerosols using kinetics and
static cell techniques: in this project we employ a fast flow-tube reactor
coupled to a chemical ionization mass spectrometer to study the
interactions of atmospheric radicals and oxidants with various surfaces
pertinent to the atmosphere. Specifically, we use organized organic thin
films and organic liquids as proxies for organic aerosols. The experiments
focus on measurements of the reactive uptake coefficients and elucidating
the reaction mechanisms of these radicals. In addition to the kinetic
studies the experiments employ several analytical techniques among them
atomic force microcopy (AFM), X-ray photoemission spectroscopy (XPS) and
infrared spectroscopy (FTIR) to characterize the formation of gas-phase
products and the surface properties after the reaction.
Recent related publications:
1. T. Moise and Y. Rudich, Reactive Uptake Of Ozone By Proxies For Organic
Aerosols: Surface Versus Bulk Processes, J. Geophys. Res. -Atmos, 105 (D11)
14667-14676 (2000).
2. E. R. Thomas, G. J. Frost and Y. Rudich, Reactive Uptake Of Ozone By
Proxies For Organic Aerosols: Surface-Bound And Gas Phase Products, J.
Geophys. Res. -Atmos, 106 (D3), 3045 (2001).
3. T. Moise, R.K. Talukdar, G. J. Frost, R.W. Fox and Y. Rudich, The
reactive uptake of NO3 by liquid and frozen organics, J. Geophys. Res. -
Atmos, submitted
2. Characterization of mineral dust particles and organic aerosols: various
techniques for the characterization of organic species present in
atmospheric particles have recently been developed in our laboratory. These
novel techniques are used to study the chemistry of these important
atmospheric particles in order to understand their climatic roles and
possible health effects. The study will involve collection of particles
using several techniques and the analysis of individual particles by
various state of the art electron microscopy methods as well as by recently
developed GC/MS and ion chromatography methods.
Recent related publications:
1. A. Falkovich, E. Ganor, Z. Levin, P. Formenti, and Y. Rudich, Chemical
And Mineralogical Analysis Of Individual Mineral Dust Particles, J.
Geophys. Res. -Atmos, in press (2001).
2. A. Falkovich and Y. Rudich, Analysis of organic compounds in atmospheric
aerosols by direct sample introduction (DSI) - thermal desorption GC/MS,
Env. Sci. Tech. -submitted .
Other possible projects include atmospheric chemical kinetics of multi
functional organic compounds and of organic peroxy radicals.
Applications for these positions are invited from candidates with a recent
Ph.D. in physical chemistry, atmospheric chemistry or related fields.
The positions are for one to two years.
For more information please visit our web site at
http://www.weizmann.ac.il/ESER/People/Yinon-Rudich/ .For additional details
please write to Yinon Rudich, Department of Environmental Sciences,
Weizmann Institute of Science, Rehovot, 76100, ISRAEL,
[log in to unmask] Tel: 972-8-9344237; Fax: 972-8-9344124
More information about the Weizmann Institute is available at
http://www.weizmann.ac.il/.
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