Yost Graduates.

To update contact information, contact

Anthony Annachino (Ph.D 1993)

Senior Project Manager

Dissertation: “Associative Ion-Molecule Reactions and Ion Trapping with a Triple Quadrupole Mass Spectrometer”

Dodge L. Baluya (Ph.D 2008)

Institute for Therapeutic Innovations
University of Florida

Dissertation: “Microscreened Endcap Holes and Buffer Gas Pressure Tailoring for Quadrupole Ion Trap Mass Spectrometry”

Cecilia Basic (Ph.D 1992)

Founder and Owner
Basic Mass Spec
Winnipeg, Manitoba, Canada
email: or 

Dissertation: “Probing Trapped Ion Energies in a Quadrupole Ion Trap Mass Spectrometer”

Brian Beato (Ph.D 1989)

AIT Bioscience
2265 Executive Drive
Indianapolis, IN

Dissertation: “Structure Elucidation of Porphyrins by Tandem Mass Spectrometry: Fundamental Studies, New Strategies, and Geochemical Applications”

Christopher R. Beekman (Ph.D 2015)

ORISE Postdoctoral Fellow


Dissertation: “Ion Mobility Mass Spectrometry as a Rapid Separations Technique for Isomeric, Metabolomic, and Clinical Analysis”

Michael W. Belford (Ph.D 2003)

Thermo Fisher Scientific

Dissertation: “The Development of Porous Polymeric Surfaces for Screening Acylcarnitines by Laser Desorption Ionization Mass Spectrometry”

Dave Berberich (Ph.D 1989)


Dissertation: “Fundamental Studies of Chemical Ionization and Charge Exchange Ionization for Quadrupole Ion Trap Mass Spectrometry”

Matt Booth (Ph.D 1995)

Principal Research Scientist and Analytical Lab Manager 
402 SW 140th Terrace, Newberry, FL 32669
(352) 244-0916

Dissertation: “Matrix-assisted Laser Desorption Ionization (MALDI) Tandem Mass Spectrometry (MSn) Using a Quadrupole Ion Trap”

Jared J. Boock (MS 2007, Ph.D 2015)


Thesis: “Characterization of Commonly Encountered Explosives Using High-field Asymmetric Waveform Ion Mobility Spectrometry Coupled With Mass Spectrometry”

Dissertation: “Electrospray High-field Asymmetric Waveform Ion Mobility Spectrometry Mass Spectrometry of Transition Metals”

Steven Boue (Ph.D 1997)

Southern Regional Research Center
1100 Robert E. Lee Blvd.
New Orleans, LA 70124

Dissertation: “The Analysis of Antibiotics Using Electrospray Quadrupole Ion Trap Mass Spectrometry: Infrared Multiphoton Dissociation and Liquid Chromatography/Mass Spectrometry”

Ulrich Bernier (MS 1992, Ph.D 1995)


Thesis: “Short-Column Gas Chromatography With Flame Ionization Detection Under Vacuum-Outlet Conditions”

Dissertation: “Mass Spectrometric Investigations of Mosquito Attraction to Human Skin Emanations”

John Bowden (Ph.D 2009)

Dissertation: “Novel Analytical Strategies for the Characterization of Steroids and Endocrine Disrupting Compounds (EDCs) in Biological and Environmental Samples”

Ted Britton (MS 1985)

The National Center for Improving Science Education
4200-A Farm Hill Boulevard
Redwood City, CA 94061-1048

Thesis: “Analysis of High Carbon-Number Geoporphyrins in Boscan Oil by Tandem Mass Spectrometry”

Harry O’Neil Brotherton (Ph.D 1982)

Department of Chemistry (Emeritus)
University of Lousiana at Monroe
Monroe, LA 71209

Dissertation: “Tandem Mass Spectrometry (MS/MS) for the Analysis of Drugs and Drug Metabolites in Racing Animals”

Stacy Barshick (Ph.D 1991)

Dissertation: “Development of Short-Column GC/MS and GC/MS/MS Strategies: Fundamentals and Applications to Anabolic Steroid Analysis”

Christopher D. Chouinard (Ph.D 2016)

Post Doctoral Research Associate
Pacific Northwest National Laboratory
Richland, WA


Dissertation: “Ion Mobility–Mass Spectrometry for Improved Metabolomics Separations: Experimental and Theoretical Approaches”

Michael T. Costanzo (Ph.D 2015)

Chief Executive Officer at Breathtec Biomedical, Inc


Dissertation: “Investigation and Development of Novel Methodologies for Disease Diagnosis and Drug Monitoring Utilizing Mass Spectrometry and Field Asymmetric Ion Mobility Spectrometry”

Brad I. Coopersmith (Ph.D 1994)

Bioanalytical Sales Specialist

Dissertation: “Selective Ion-Molecule Reactions in a Quadrupole Ion Trap Mass Spectrometer”

Jon Degnore (Ph.D 1997)

Perceptive Biosystems
500 Old Connecticut Path
Framingham MA 01701

Dissertation: “Fundamental Studies of Quadrupole Ion Traps: Investigations of Mass Shifts and Improved Ion Ejection”

Liz Dhummakupt (Ph.D 2015)


Dissertation: “Direct Analysis of Dried Blood Spots by Mass Spectrometry”

Taylor M. Domenick (Ph.D 2021)

Research Scientist
Solvay Specialty Polymers
Alpharetta, GA


Dissertation: “Development of Ion Mobility-Mass Spectrometric Methods to Enhance Coverage of the Cellular Metabolome”

Don Eades (Ph.D 1994)

Dissertation: “Higher-Order Field Effects on Stored Ions in a Quadrupole Ion Trap”

Noelle Elliott (Ph.D 2012)

Northeast LCMS Applications Specialist
Perkin Elmer
710 Bridgeport Avenue
Shelton, CT 06484

Dissertation: “Optimization and Implementation of LC/MS for Metabolomic Applications”

Shannan Elmore (MS 1996)

Thesis: “Determination of Plasma and Red Blood Cell Acylcarnitine Profiles by Gas Chromatography/Tandem Mass Spectrometry”

Jim Ferguson (Ph.D 1997)


Dissertation: “Mass Spectrometric Studies of Distorted Porphyrins: Fragmentation Pathways and Ionization Energies”

Dean Fetterolf (Ph.D 1983)

Forensic Science Research Group
FBI Academy
Quantico, VA 22135

Dissertation: “Added Resolution Elements in Tandem Mass Spectrometry for Chemical Analysis”

Timothy J. Garrett (Ph.D 2006)

Research Assistant Professor/Core Laboratory Director
General Clinical Research Center
College of Medicine
University of Florida
1600 SW Archer Rd., Gainesville, FL 32601

Dissertaion: “Imaging Small Molecules in Tissue by Matrix-assisted Laser Desorption/ionization Tandem Mass Spectrometry”

Jennifer Garrett (Ph.D 2008)

University of North Florida


Dissertation: “Separation of Tryptic Peptide Ions by High-field Asymmetric-waveform Ion Mobility Spectrometry”

Mike Gehron (Ph.D 1987)

Pratt & Whitney Fellow
P.O.Box 109600 M/S 704-35
West Palm Beach, FL 33410-9600

Dissertation: “Advanced Mass Spectrometric Methods of Jet Fuel Analysis”

Todd Gillespie (Ph.D 1988)

Eli Lilly
Indianapolis, IN 46202

Dissertation: “Concepts for the Determination of Prostaglandins by Tandem Mass Spectrometry”

Emily L. Gill (Ph.D 2018)

Clinical Chemistry Fellow
Children’s Hospital of Philadelphia
Hospital of the University of Pennsylvania


Dissertation: “Mass Spectrometry Innovations for Evaluating the Metabolic Signature of Parkinson’s Disease and Deep Brain Stimulation”

Timothy Griffin (Ph.D 1995)

Analytical Chemistry
Kennedy Space Center, FL 32899

Dissertation: “GC/MS/MS on the Quadrupole Ion Trap Mass Spectrometer Software Development and the Examination of the Effects of Ion Population”

George Brody Guckenberger (Ph.D 1999)

Thermo Finnigan
2215 Grand Avenue Pkwy
Austin, TX 78728-3812

Dissertation: “Chemical Ionization and Ion Molecule Reactions in the Quadrupole Ion Trap Mass Spectrometer with Ion Injection”

Roger Guevremont


Mary Beth Hlay (MS 1984)


Thesis: “Trace Analysis of Isomeric Octopamines and Synephrines by Tandem Mass Spectrometry”

Mark Hail (Ph.D 1988)

Navatia Corporation
382 Hidden Oaks Drive
Yardley, PA 19067

Dissertation: “Characterization and Enhancement of Sample Introduction and Ion Transmission in Combined Gas Chromatography/Tandem Mass Spectrometry”

Christopher Hilton


Sue Hummel (Ph.D 1983)

Jodie Johnson (Ph.D 1984)

University of Florida (MS Facility)
Gainesville, FL 32611

Dissertation: “Tandem Mass Spectrometry for the Identification and Quantitation of Tryptolines (Tetrahydro-Beta-Carbolines) in Rat Brain Extracts”

Jon Jones (Ph.D 1995)

Dissertaion: “Ion Trap Mass Spectrometry: On-line Electrochemistry and Improved Ion Detection Efficiency”

Manasi Mangaonkar Kamat (Ph.D 2015)


Dissertation: “Study of Traumatic Brain Injury Biomarkers by Mass Spectrometry”

Robin H.J. Kemperman (Ph.D 2020)

Senior Mass Spectrometrist
Pathology and Lab Medicine
Children’s Hospital of Philadelphia (CHOP)

Dissertation: “A Novel Metabolomics Workflow for Enhanced Metabolite Identification and Innovative Approaches for Improved Ion Mobility Separations “

Frank A. Kero (Ph.D 2008)

Analytical Applications Specialist
10430 Harris Oaks Blvd
Charlotte, NC, 28269

Dissertation: “Mass Spectrometric Studies of Endogenous Thiocyanate in Exhaled Breath Condensates and Oral Rinses”

Brent Kleintop (Ph.D 1993)

Analytical R&D, Bristol-Myers Squibb
1 Squibb Drive
New Brunswick, NJ 08903

Dissertation: “Development and Application of Particle Beam LC/MS on the Quadrupole Ion Trap Mass Spectrometer”

Doug W. Kuehl

U.S. Environmental Protection Agency (retired)

Jeremy P. Koelmel (Ph.D 2017)

Agilent Technologies

Dissertation: “A Modular Open Source Workflow for Lipidomics Using Liquid Chromatography High Resolution Tandem Mass Spectrometry (UHPLC-HRMS/MS)”

Rachelle Landgraf (Ph.D 2009)

Scripps Florida

Dissertation: “Analysis of Lipids in Nerve Tissue by MALDI Tandem Mass Spectrometric Imaging”

Hillary Lathrop (Ph.D 2013)

University of Florida Postdoctoral Fellow
Department of Chemistry

John Laycock (Ph.D 1994)

Director of Technology and Product Development 
Tecan SP
Baldwin Park, CA, 91706


Dissertation: “Tandem Mass Spectrometric Studies of Porphyrins: Structural and Photochemical Studies”

Maw-Rong Lee

Distinguished Professor
Chemistry Department
Dean, College of Science
Director, Center for Environmental Protection & Occupational Safety and Health
National Chung-Hsing University
Taichung, Taiwan, R.O.C.

Thesis: “Determination of Lysergic Acid Diethylamide (LSD) in Urine by Tandem Mass Spectrometry”

Mike Lee (MS 1985, Ph.D 1987)

Milestone Development Services
P.O. Box 178
7 Snowdrop Place
Newtown, PA 18940-0178
Tel: (267) 757-0462
Fax: (267) 757-0463

Thesis: “The Rapid Identification of Drug Metabolites by Tandem Mass Spectrometry”

Dissertation: “Fundamental Studies of Thermospray Ionization Processes”

Kyle Ann Mino (Ph.D 2011)

Analytical Scientist
KiOR, Inc.
13001 Bay Park Road
Pasadena, TX 77057
Office: 281.694.8751

Dissertation: “MALDI Tandem Mass Spectrometric Techniques for the Analysis and Imaging of Lignocellulosic Materials”

Hidee Molina (MS 2005)

Compliance Officer/Chemist

US Food and Drug Administration (FDA)

10903 New Hampshire Avenue, Silver Springs, MD 20893


Daniel Magparangalan (Ph.D 2010)


Dissertation: “Mass Spectrometric Imaging of Large Peptides by MALDI-LIT-MSn

Ken Matuszak (Ph.D 1988)

Ken Matuszak Consulting

Dissertation: “Characterization of Atmospheric Pressure Ionization/Tandem Mass Spectrometry for Direct Atmospheric Analysis”

Joseph E. McClellan (Ph.D 2000)

Director, Development & Strategic Operations (DSO)
Pfizer, Worldwide Research & Development
35 CPD, Y-2019
Cambridge, MA 02140
Tel: (617) 665-7207

Dissertation: “Fundamentals and Applications for the Analysis of Explosives via Liquid Chromatography/Atmospheric Pressure Ionization-Quadrupole Ion Trap Mass Spectrometry”

Kevin McHale (Ph.D 2002)

LC/MS Applications Group Leader
Thermo Fisher Scientific

Dissertation: “Development of Liquid Chromatography Tandem Mass Spectrometry Instrumentation and Methodology for the Investigation of Biologically Active Compounds”

Robert Menger (Ph.D 2013)

Scientist I, Analytical R&D
86 Morris Avenue
Summit, NJ 07901

Dissertation: “Multivariate Data Analysis Strategies for Biological Applications of Matrix-Assisted Laser Desorption/Ionization Mass Spectrometric Imaging”

Alisha Mitchell-Roberts (Ph.D 2005)

Technical Instructor, LC/MS
Thermo Fisher Scientific
1400 Northpoint Parkway, Suite 10, West Palm Beach, FL 33407
561-687-6237 (phone)
561-688-8732 (fax)

Dissertaion: “Advanced Techniques in Mass Spectrometry for Forensic Applications”

Joseph J. Mulholland (Ph.D 2000)


Dissertation: “Expanding and Enhancing the Capabilities of the Quadrupole Ion Trap Mass Spectrometer for High Resolution and MSn Analyses”

Jim Murphy (Ph.D 2002)


Dissertation:  “Fundamental Studies of the Quadrupole Ion Trap Mass Spectrometer:  Compound-Dependent Mass Shifts and Space Charge”

Michael P. Napolitano (Ph.D. 2013)

Dissertation:  “Laser Desorption/Ionization-Tandem Mass Spectrometry of Anthraquinone Dyes and Lead White Pigment for Painted Works of Art”

Nicholas Oranzi (Ph.D 2019)

Johnson & Johnson

Dissertation:  “Improving the Vitamin D Assay Using Ion Mobility Coupled with Liquid Chromatography/Mass Spectrometry”

Maria Ospina (Ph.D 1998)

Centers for Disease Control and Prevention
4770 Buford Highway, NE
Building 17, Mailstop F-17
Atlanta, GA 30341-3724
(770) 488-7407

Dissertation: “Internal Energy Effects in Tandem Mass Spectrometry”

Samaret Otero (Ph.D 2007)


Dissertaion: “Allelochemicals that Modify Mosquito Host-seeking Behavior: Gas Chromatography/Mass Spectrometry and High-field Asymmetric-waveform Ion Mobility Spectrometry”

Emily O’Neill (Ph.D 2014)

Sr. Electrical Engineer

Raytheon Company


Dissertation: “Mass Spectrometric Analyses and Imaging of Materials Found in Paint Cross-sections from Replica Works of Art”​

Pete Palmer (Visiting Scientist)

San Francisco State University
Dept. of Chemistry and Biochemistry
1600 Holloway Ave., San Francisco, CA 94132

Rainey E. Patterson (Ph.D 2016)

Eastman Chemical Company

Randall E. Pedder (Ph.D 1992)

Ardara Technologies L.P.
418 Valley View Drive
Monroeville, PA 15146
Mobile: (412) 607-4213
Fax: (412) 373-9388

Dissertation: “Fundamental Studies in Quadrupole Ion Trap Mass Spectrometry”

Bob Perchalski (Ph.D. 1985)

Dissertation: “Characteristics and Application of a Laser Ionization/Evaporation Source for Tandem Mass Spectrometry”

David Pirman (Ph.D 2011)

Agios Pharmaceuticals
Dissertation: “Quantitative Tandem Mass Spectrometry Imaging With Matrix Assisted Laser Desorption Ionisation”

Scott T. Quarmby (Ph.D 1997)

Senior Research Scientist
Thermo Fisher Scientific
Austin, Texas 78728
(512) 251-1539

Dissertation: “Fundamental Studies of Ion Injection and Trapping of Electrosprayed Ions on a Quadrupole Ion Trap Mass Spectrometer”

Chris Reddick (Ph.D 1997)

Bristol-Myers Squibb
Manager, Medical Operations
office: 978-985-0717
fax: 978-469-5993
voice-mail: 800-838-4443 ext. 9450

Dissertation: “The Detection of Pharmaceutical Drug Compounds From Intact Biological Tissue by Matrix-Assisted Laser Desorption Ionization (MALDI) Quadrupole Ion Trap Mass Spectrometry”

Rich Reich (MS 2001, Ph.D 2010)

United States Air Force

Thesis:  “Fundamentals and Applications of Atmospheric Pressure Chemical Ionization Quadrupole Ion Trap Mass Spectrometry for the Analysis of Explosives”

Dissertation:  “Quantitative Imaging of Cocaine and its Metabolites in Brain Tissue by Matrix-assisted Laser Desorption/ionization Linear Ion Trap Tandem Mass Spectrometry”

Michelle Reid (Ph.D 2018)

Postdoctoral Fellow
ETH Zürich

Dissertation:  “Stable Isotope Tracer Analysis of Exhaustive Exercise-induced Metabolism using Ultra-High Performance Liquid Chromatography-High Resolution Mass Spectrometry”

Chin-Shyan Roan (MS 1985)

Thesis: “Localization of Double Bond Positions in Olefins by Mass Spectrometry”

Alejandra Rodriguez (Ph.D 1999)

Polo Tecnologico, Universidad de la Republica, Uruguay
Aparicio Saravia s/n, Pando, Canelones 91000, Uruguay
(5982) 2922021 ext 119

Dissertation: “Noncovalent Interactions Between Biomolecules Studied by Electrospray Ionization/Quadrupole Ion Trap Mass Spectrometry”

Leonard Rorrer (MS 2002, Ph.D 2010)

Griffin Technologies

Thesis:  “The role of Clustering on Ion Behavior in High Field Asymmetric Waveform Ion Mobility Spectrometry (FAIMS)”

Dissertation: “Parameters Affecting Performance of Planar High-field Asymmetric Waveform Ion Mobility Spectrometry (FAIMS)”

George A. Sarkis (Ph.D 2017)

Postdoctoral Fellow
Department of Biological Engineering
Massachusetts Institute of Technology
77 Massachusetts Avenue
Cambridge, MA 02142


Charlie Schmidt


Jim Stephenson (Ph.D 1995)

Director of Biomarker and Systems Biology Research
Research Triangle Institue
3040 Cornwallis Road, Research Triangle Park, NC 27709-2194
(919) 316-3978

Dissertation: “A Novel Electrospray Ion Trap Mass Spectrometer for Photodissociation of Biological Molecules”

Whitney Stutts (Ph.D 2013)

ORISE Postdoctoral Fellow
5100 Paint Branch Parkway, HFS-707
College Park, MD 20740
(240) 402-1895

Jody Shoemaker (Ph.D 1991)



26 W. Martin Luther King Drive

Cincinnati, OH 45268


Dissertation: “Ion-Molecule Reaction Studies for the Screening of Potential Carcinogens by Tandem Mass Spectrometry”

Marilyn Tourne (Ph.D 2010)

Department of Chemistry 
Tuskegee University 
Armstrong Hall – Room 301 
Tuskegee, AL 36088

Dissertation: “High-field Asymmetric Waveform Ion Mobility Spectrometry: Evaluation of Novel Cell Geometries and Techniques”

Mike Trehy (Ph.D 1985)


Dissertation: “Determination of Aldicarb by Gas Chromatography/Mass Spectrometry with Short Capillary Columns”

Rick Troendle (Ph.D 2000)

University of North Florida

Dissertation: “A Quadrupole Ion Trap Laser Microprobe for the Mapping of Pharmaceutical Compounds in Intact Tissue”

Yu-Hsuan Tsai (Ph.D 2015)

Dissertation: “Metabolomic and Lipidomic Analysis of Skeletal Muscle by Ultra-High Performance Liquid Chromatography High Resolution Mass Spectrometry (UHPLC-HRMS) and Matrix Assisted Laser Desorption Ionization Mass Spectrometry Imaging (MALDI-MSI)”

Chia-Wei Tsai (Ph.D 2015)


Dissertation: “Mass Spectrometric Methods and Integrated Systems for Explosives Analysis”

Candice Z. Ulmer (Ph.D 2016)

Associate Service Fellow, Center for Disease Control and Prevention


Dissertation: “Cellular Metabolomic and Lipidomic Biomarker Discovery Methodologies for Type 1 Diabetes using UHPLC-HRMS Analysis of Established and Primary T Cells”

Bill Van Ausdale (MS 1994)

Savannah Laboratories

Thesis: “New Strategies for the Analysis of Environmental Samples using Thermospray Coupled with Tandem Mass Spectrometry”

Rafael Vargas (Ph.D 1993)

UCB Chemicals Corp.
2000 Lake Park Drive
Smyrna, GA 30080
(770) 805-1951

Dissertation: “Development of Laser Desorption Ionization on a Quadrupole Ion Trap Mass Spectrometer”

Kevin Volk (Ph.D 1989)

Bristol-Myers Squibb
PO Box 7407
Princeton, NJ 08543-7407

Dissertation: “Electrochemistry and Enzymes On-Line with Mass Spectrometry”

Tracie L. Williams (Ph.D 1997)

Centers for Disease Control

Dissertation: “Protein Structure, Conformation, and Noncovalent Interactions Studied by Quadrupole Ion Trap Mass Spectrometry”

Michael Wei (Ph.D 2018)


Dissertation: “Improving the Separation of Drug Isomers Using Chemical Modifiers in High-Field Asymmetric Waveform Ion Mobility Spectrometry”

Alex Ching-Hong Wu (Ph.D 2009)


Dissertation: “Fundamentals and Applications of High-field Asymmetric Waveform Ion Mobility Spectrometry for the Analysis of Explosives”

Wells W. Wu

Research Chemist
Facility for Biotechnology Resources
Center for Biologics Evaluation and Research
U.S. Food and Drug Administration
29 Lincoln Drive, Rm 208, NIH Bldg 29
Bethesda, MD 20892
(301) 402-4996

Nathan Yates (Ph.D 1994)

Merck & Co., Inc.
Rahway, NJ 07065

Dissertation: “Methods for Gas Chromatography/Tandem Mass Spectrometry on the Quadrupole Ion Trap”

Hong Yu (Ph.D 2007)


Dissertation: “Polymer Modification with Matrices for Matrix-assisted Laser Desorption/ionization Mass Spectrometry and with Apatamers for Aptamers for Surface-enhanced Laser Desorption/ionization Mass Spectrometry”