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 Expert  723302

Expert in Environmental and Aquatic Chemistry; Metal-Organic Interactions; Surface Reactions; Kinetics

Available for your Consulting and Expert Witness Needs

Maryland (MD)
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness

Summary of Expertise:

Listed with other top experts in: 

The field of aquatic chemistry begins with a focus on the speciation of solutes in aqueous solution (i.e. protonation level, complex formation with protons, hydroxide ions, metal ions, and ligands) and with pathways and rates of reaction. It now has been extended to include speciation and chemical reactions at solid/water interfaces. Expert's research focuses on metal-organic interactions: (i) how naturally-occurring and anthropogenic organic compounds influence the speciation, solid-water partitioning, and chemical reactions of metallic elements; and (ii) how natural concentrations of dissolved metal ions and loadings of metal (hydr)oxide solid phases influence the speciation, solid-water partitioning, and chemical reactions of naturally-occurring and anthropogenic organic compounds. Regarding speciation work, Expert's group has been developing capillary electrophoresis as an analytical tool. His group has extensive experience with the homogeneous solution reactions of industrial chelating agents and agricultural chemicals. Expert also has extensive experience with biochemicals exuded by organisms into soil and sediment interstitial waters. As far as solid/water interfaces are concerned, Expert has extensive experience regarding pathways and rates of oxidation-reduction, complex formation, and catalysis reactions involving (hydr)oxides of the first row transition metals and aluminum. Expert's work is primarily laboratory-based. He also has extensive experience with the quantitative treatment of equilibrium speciation and reaction kinetics using computer-based programs.

solution chemistry


aquatic chemistry

Show Secondary and Basic Areas of Expertise
Expert may consult nationally and internationally, and is also local to the following cities: Philadelphia, Pennsylvania;  Reading, Pennsylvania;  Lancaster, Pennsylvania;  Baltimore, Maryland;  Frederick, Maryland;  Gaithersburg, Maryland;  Camden, New Jersey;  Vineland, New Jersey;  Wilmington, Delaware;  and Alexandria, Virginia.

Year   Degree   Subject   Institution   Honors
1983   Ph.D.   Environmental Engineering Science   California Institute of Technology  
1981   M.S.   Environmental Engineering Science   California Institute of Technology  
1978   B.S.   Chemistry   University of Maryland at College Park   with High Honors, Magna cum Laude

Work History:
Years   Employer   Department   Title   Responsibilities

1983 to


(Undisclosed University)


Dept. of Geography and Environmental Engineering, Whiting School of Engineering




Research and teaching

Career Accomplishments:

American Chemical Society, Divisions of Environmental Chemistry and Geochemistry; The Geochemical Society; The Soil Science Society of America; The Society of Environmental Toxicology and Chemistry

Professional Appointments

Guest Editor, Environmental Science & Technology J.J. Morgan Feitschrift Issue (February 1, 2002)


Guest Professorship, Universitat Karlsruhe, Germany (1999)

Publications and Patents Summary

He has published 44 peer-reviewed journal articles and 14 book chapters

Selected Publications and Publishers  
 - Geochimica et Cosmochimica  
 - Analytical Chemistry  
 - Environmental Science & Technology  

Government Experience:
Years   Agency   Description
1991 to 1991   U.S. Environmental Protection Agency   He spent 4.5 months performing sabbatical research at the EPA's Ecosystems Research Division

Consulting Services:
Selected Consulting Examples:
  • "Estimating Dermal Exposure to Chromium in Contaminated Lands: Pertinent (Bio)geochemistry", Rifkin and Associates (1997).
  • "Manganese and Iron Deposition in Power Plant Cooling Water Systems", Public Service Electric & Gas Corporation, Newark, Newark New Jersey (1986-1987).
Click the green button above to contact Expert for a free initial screening call regarding your expert consulting needs.  Expert is available for consulting to corporate, legal and government clients.  Remember, your initial screening call to speak with Expert is free.

Expert Witness:
Recent Litigation Client Requests:
  • Chemistry expert for consulting on pool chemicals explosion case.
Click the green button above to contact Expert for a free initial screening call regarding expert testimony, litigation consulting and support, forensic services, or any related expert witness services.  A few litigation needs include product liability, personal injury, economic loss, intellectual property (patent, trademark, trade secret, copyright), and insurance matters.  Remember, your initial screening call to speak with Expert is free.

International Experience:
Years   Country / Region   Summary
1985 to 2006   Switzerland   He has made numerous research-related trips to the Swiss Federal Institute of Environmental Science and Technology (EAWAG) in Dubendorf, Switzerland, including a 2.5 month say in 1991.

Additional Skills and Services:

Lecturer for two short courses sponsored by the European Environmental Research Organization and one short course sponsored by the University of Wisconsin/Milwaukee and NASA/Ames Laboratory.


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