Graduate Students                      Postdocs                       Undergrads

Graduate Students

John Holecek

e-mail: jholecek@ucsd.edu

website: http://www.atofms.ucsd.edu/jholecek.html

office: Urey Hall 2130     phone: 858-534-7430

B.A., 2001, Colorado College

Projects: Aircraft Instrument, Cloud Condensation Nuclei

John entered the graduate program at Scripps Institution of Oceanography and joined the Prather Lab in the fall of 2002. He is interested in reducing the large uncertainties of the aerosol-cloud interaction (indirect effect) on climate. He is working to quantify the chemical effects of ambient cloud condensation nuclei aerosols through development of new analytical instruments and techniques, and lab and field studies.

Stephen Toner

e-mail: smtoner@ucsd.edu

website: http://www.atofms.ucsd.edu/smtoner.html

B.S., 2000, California State University - Northridge

M.S., 2004, University of California, San Diego

Ph.D., 2007, University of California, San Diego

Projects: Source Characterization & Source Apportionment

1st Author Papers: Single Particle Characterization of Ultrafine and Accumulation Mode Particles from Heavy Duty Diesel Vehicles Using Aerosol Time-of-Flight Mass Spectrometry

Using mass spectral source signatures to apportion exhaust particles from gasoline and diesel powered vehicles in a freeway study using UF-ATOFMS

His research has focused on anthropogenic aerosol source characterization and atmospheric apportionment, and in particular, vehicular source characterization / apportionment.  Other sources he’s characterized have included coal combustion, wood burning, and solid-fuel rocket motor exhaust.

Matt Spencer

e-mail: Matt.Spencer@nanocomposix.com

website: http://www.atofms.ucsd.edu/spencer.html

B.S., 2000, Chemistry & B.S., 2000, Biochemistry, Colorado State University

M.S., 2004, University of California San Diego

Ph.D., 2007, University of California San Diego

Projects: Aerosol Quantification, EC/OC properties

One project of Matt's was quantitative measurements of organic carbon (OC) and elemental carbon (EC) in ambient particles using laser desorption ionization mass spectrometry. Another involved measurements of particle effective density and chemical information using DMA/UF-ATOFMS technique. Newer projects included measuring free radicals in particles using Electron Paramagnetic Resonance (EPR) and initial development and feasibility studies using ATOFMS for analysis of paramagnetic bead and colloidal gold based bio-molecule separations. Matt's field work included the particle concentrator characterization, CIFEX, APMEX, SOAR I, and SOAR II.

Sharon Qin

e-mail: xqin@ksu.edu

website: http://www.atofms.ucsd.edu/sqin.html

office: Urey Hall 2108     phone: 858-822-5745

B.S., 2000, Peking University, China

M.S, 2002, University of California Irvine

Ph.D., 2007, University of California San Diego

Projects: Source Apportionment, Aerosol Quantification

Ryan Moffet

e-mail: rcmoffet@lbl.gov

website: http://www.atofms.ucsd.edu/rmoffet.html

B.S., 2002, San Francisco State University

M.S., 2004, University of California San Diego

Ph.D., 2007, University of California San Diego

Projects: Aircraft Instrument (Shirley), Optical Properties of Aerosols

1st Author Papers: Extending ATOFMS measurements to include refractive index and density,

Ryan joined the group in 2002. He is interested in the optical properties of aerosols and exploring methods for observing them with the ATOFMS. He is also involved with the aircraft project.

David A. Sodeman (2004)

Undergraduate Degree: B.S in Chemistry from the University of California Riverside in 1999

e-mail: David.Sodeman@dri.edu

website: http://www.dri.edu/

dissertation: "Characterization of ambient, automobile, and diesel aerosols utilizing Aerosol Time of Flight Mass Spectrometry"

Group Publications:

Current Job: Post-Doctoral Research Associate Desert Research Institute

Sylvia Pastor (2003)

Undergraduate Degree:

e-mail: sylvia@spastor.net

website: http://www.spastor.net/

dissertation: "Single Particle Perspective on the Southern California Ozone Study: Characterization and Evolution of Ambient Aerosols by Aerosol Time-of-Flight Mass Spectrometry"

Group Publications:

Keith R. Coffee (2002)

Undergraduate Degree: San Francisco State Univeristy 1997

e-mail: coffee3@llnl.gov

website: http://www-cms.llnl.gov/PostDocs/bios/coffee.html

dissertation: "Single particle characterization of soil and dust particulate matter in the urban and marine environments"

Group Publications:

Current Job: Lawrence Livermore National Laboratories

David T. Suess (2002)

Undergraduate Degree:  B.S. Chemistry &  B.A. Rhetoric & Communications in 1997

e-mail: N/A

website: N/A

dissertation: "Single Particle Mass Spectrometry Combustion Source Characterization and Atmospheric Apportionment of Vehicular, Coal and Biofuel Exhaust Emissions"

Group Publications:

Current Job: Consultant in Seattle

Tas Dienes (2002)

e-mail: tas@iosoftware.com

website: http://www.iosoftware.com/

dissertation: "Development, Characterization, and Refinement of a Transportable Aerosol Time-of-Flight Mass Spectrometer"

Group Publications:

Current Job: With IO Software

Jeffrey R. Whiteaker (2002)

Undergraduate Degree: B.S. in Chemistry from the University of Arizona, 1997

e-mail: jwhiteak@fhcrc.org

website: http://www.fhcrc.org/research/edi/

dissertation: "Analysis of atmospheric aerosol processes using single particle mass spectrometry"

Group Publications:

Current Job: Fred Hutchinson Cancer Research Center

Sergio Adrian Guazzotti (2001)

Undergraduate Degree: Licentiate in Chemistry from the University of Buenos Aires

e-mail: sergio.guazzotti@nanostream.com

dissertation: "Natural and Anthropogenic Influences on the Chemical Composition of Marine Boundary Layer Aerosols: A Single Particle Perspective"

Group Publications:

Current Job: Working as a product manager at Nanostream in Pasedena, CA.

David Philip Fergenson (2001)

Undergraduate Degree: B.A from Carnegie Mellon University

e-mail: fergenson1@llnl.gov

website: http://www.llnl.gov/

dissertation: "The Analysis of Aerosol Time-of-Flight Mass Spectrometry Data"

Group Publications:

Current Job: In the BAMS group at Lawrence Livermore National Laboratory

Don-Yuan Liu (2000)

Undergraduate Degree: B.S. in Chemistry from the University of Florida

e-mail:

website:

dissertation: "Using Aerosol Time-of-Flight Mass Spectrometry (ATOFMS) Data to Gain New Insights into the Temporal Profiles, Composition, and Evolution of Individual Particles in the Troposphere"

Group Publications:

Current Job:

Philip Joseph Silva (2000)

Undergraduate Degree: B.S. in chemistry from Loyola Maymount University.

e-mail: psilva@cc.usu.edu

website: http://www.chem.usu.edu/~psilva/

dissertation: "Source profiling and apportionment of airborne particles : a new approach using aerosol time-of-flight mass spectrometry"

Group Publications:

Current Job: Assistant Professor at Utah State University

Bradley Douglas Morrical (1999)

Undergraduate Degree: B.S. from Wabash College

e-mail: N/A

website: N/A

dissertation: "The design and application of a field transportable time-of-flight mass spectrometer (ATOFMS) and use of two step laser desorption/ionization (L2MS) to determine PAH in single particles"

Group Publications:

Current Job: Hoffman Laroche in Switzerland

Christopher Alan Noble (1999)

Undergraduate Degree: B.A. in Engineering-Physics from Point Loma Nazarene University

e-mail: noble@rti.org

website: www.rti.org

dissertation: "Single particle analysis of transient variations occurring in atmospheric aerosols"

Group Publications:

Jobs: Atmospheric chemist in the Engineering and Technology Division of the RTI International in North Carolina. Currently working for the government.

Kimberly Salt (1995)

Undergraduate Degree: B.S. from the University of California Riverside

e-mail: ksalt@crafton.sbccd.cc.ca.us

website: http://www.craftonhills.edu/PersonalWebs/ksalt/

dissertation: "Characterization of aerosol particles containing Sulfur and Nitrogen species using aerosol time-of-flight mass spectrometry (ATOFMS)" (abstract only)

Group Publications:

Current Job: Professor at Crafton Hills College in Yucaipa, CA

Trent Nordmeyer (1995)

Undergraduate Degree: B.S. in chemistry from Brigham Young University

e-mail: N/A

website: N/A

dissertation: "The design and construction of an aerosol time-of-flight mass spectrometer for ambient aerosol analysis"

Group Publications:

Current Job:

Postdoctoral Researchers

Dr. Hiroshi Furutani

e-mail: mailto:hiroshif@ori.u-tokyo.ac.jp

website: http://www.atofms.ucsd.edu/hiroshi/hiroshi.html

office: Urey Hall 2108     phone: 858-822-5745

B.S., 1991, Osaka University (Japan); M.S., 1993, Osaka University

Ph.D, 1997, Osaka University

Postdoctoral Fellow1997-2001 University of Tokyo (Japan)

Projects: Marine Aerosols, CI-ATOFMS, Nanoparticles, Aircraft Instrument

Hiroshi joined the group in 2001 just before the move from Riverside. He was quite interested in marine aerosols. In particular he studied the ejection of aerosols from bubble bursting and marine organisms on particles. He also looked at gold nanoparticles with the ATOFMS and lead the development of the new Chemical Ionization - Aerosol Time of Flight Mass Spectrometer (CI-ATOFMS) .

Dr. Thomas Rebotier

e-mail: rebotier@hotmail.com

website: http://www.atofms.ucsd.edu/rebotier.html

Ingénieur Civil des Mines, 1983, Ecole des Mines de Paris

Ph.D. (Cognitive Science), 1998, University of California, San Diego

Projects: Source Apportionment, Dataset Classification

Thomas joined the Prather Lab in September 2004. He contributed to our software all along the data processing chain, from instrumental signal processing to classification to result-presentation.  His research topics included cars vs. diesel truck aerosol apportionment, large dataset classification, and making aerosol classification robust with respect to particle aging.

Gary Poon (2004-2005)

Graduate Degree: Ph.D from the University of California San Diego under the guidance of Prof. Andy Kummel.

e-mail: gcpoon@ucsd.edu

website: N/A

Group Publications:

Current Job: N/A

Location: Minneapolis, Minnesota

Sergio Adrian Guazzotti (2001-2004)

Graduate Degree: Ph.D. Chemistry from the University of California Riverside under the supervision of Prof. Prather in June 2001

e-mail: sergio.guazzotti@nanostream.com

website:

Group Publications:

Current Job: Working as VP of Engineering at Nanostream in Pasedena, CA.

Yongxuan Su (2001-2003)

Graduate Degree: Ph.D. (1998) in Analytical Chemistry from Xiamen University in China

e-mail: yxsu@chem.ucsd.edu

website: http://chem-tech.ucsd.edu/Recharges/MassSpec/

Group Publications:

Current Job: Developmental Engineer in the Mass Spectrometry Facility at the University of California San Diego

George Khairallah (2000-2002)

Graduate Degree: Ph.D. from Latrobe University in Melbourne, Australia under the guidance of Dr. J. Barrie Peel's

e-mail: gkhai@unimelb.edu.au

website: http://www.unimelb.edu.au/

Group Publications:

Current Job: Research Fellow at the University of Melbourne, Austrailia

Stefania Angelino

Graduate Degree: Ph.D. from the University of Torino (Italy) under the direction of M.C. Gennaro.

e-mail:

website:

Group Publications:

Current Job: DuPont in London

Leila Brickus

e-mail:

website:

Group Publications:

Current Job:

Markus Gälli

Graduate Degree: Ph.D. at the University of Bern under the supervision of U. P. Schlunegger

e-mail: markus.gaelli@tsi.com

website: www.tsi.com

Group Publications:

Current Job: Working with the ATOFMS at TSI Inc in Shoreview Minnesota

Deborah Gross (1996-1998)

Graduate Degree: Ph.D. at the University of California Berkeley under the direction of Evan Williams

e-mail: dgross@carleton.edu

website: http://www.people.carleton.edu/%7Edgross/index.htm

Group Publications:

Current Job: Associate Professor of Chemistry

Eric Gard

Graduate Degree: Ph.D at the University of California Davis

e-mail: gard2@llnl.gov

website: http://www.llnl.gov/

Group Publications:

Current Job: BAMS group at Lawrence Livermore National Laboratory

Undergraduates

Rene Sanchez

e-mail: r2sanche@ucsd.edu

Projects: Aircraft Instrument

Rene worked with the Prather group from June of 2004 until August 2006.  His primary focus has been to develop the operating system for the Aircraft-Aerosol Time-of-Flight Mass Spectrometer (A-ATOFMS) using LabVIEW. Rene is working on his PhD in Mechanical Engineering with an emphasis in controls at University of California.

Jessie Charrier

e-mail: jcharrie@ucsd.edu

office: Urey Hall 2108     phone: 858-822-5745

Projects: Aerosols from Bubble Bursting

Kevin Ramazan

Eric Barthel

Prather Group Pics Though the Years

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