Expertise

• Aqueous-phase photochemistry.
• Measurement of quantum yields for formation of free radical oxidants (OH and O2), and single molecular oxygen (O2) in illuminated solutions using spectroscopic and kinetic techniques.
• Measurement of kinetic rate constants for reactions of free radical oxidants and O2 with chemical compounds of biological importance.
• Formation and biological impacts of photochemically generated free radicals formed in vivo.
• Sunscreens, ophthalmic drugs, and antibiotics.
• Measurement of thermodynamic Henry's law constants (H) for partitioning of chemical species of environmental interest between air and water.
• Equilibrium partitioning between phases and the role of chemical compound transport in the environment.
• An improved method for determination of H values with optical absorbency of a solute in aqueous solution as it partitions to the vapor phase in a sealed vessel combined with a variety of organic compounds.

Experience

Associate Professor, Department of Chemistry, Undisclosed University, 1996 - Present

• Teach undergraduate and graduate courses in chemistry.
• Set up a research laboratory and conducted research in environmental analytical chemistry.

Adjunct Instructor, Department of Chemistry, Undisclosed University, 2004 - 2006

• Taught freshman chemistry courses during summer sessions.

Adjunct Instructor, 1996-1997

• Indiana University-Purdue University at Indianapolis, School of Public and Environmental Affairs.
• Taught a graduate level course in environmental chemistry.

Research Assistant, Environmental Chemistry Laboratory, Duke University, 1987-1991

• Measured the formation and steady-state concentrations of photochemically produced oxidant species such as hydroxyl radical (OH) and other oxygen centered radicals as well as singlet molecular oxygen (O2) and hydrogen peroxide in illuminated cloud and fog samples.
• Measured kinetic rate constants for reactions of oxidants and organic compounds in aqueous solutions.

Teaching Assistant, Duke University, 1987 - 1991

• Assisted in the instruction of graduate students in environmental chemistry and fate of organic chemicals courses.
• Instructed senior chemistry undergraduate students in instrumental methods of laboratory analysis.

Analytical Chemist, Research Triangle Institute, North Carolina, 1985 - 1987

• Responsible for management of a contract with the USEPA that involved the development of a repository of compressed gas cylinders that were used as analytical standards for testing the ability of hazardous waste incinerator facilities to monitor emissions.
• Developed automated cryogenic trapping method for gas chromatographic analysis of organics in air.

Honors & Publications

• Photostabilities of Sunscreen Active Ingredients
• Photochemistry of Several New Sunscreen Active Ingredients
• Direct Detection of Singlet Molecular Oxygen in Photobiological Systems,
• Remediation of Power Plant Effluent Water Contaminated with Selenium and Cyanide
• Development of a Chemical Actinometer for Pharmaceutical Photostability Studies
• HP-5880A Gas Chromatograph Enhancement
• Photostability of Several Structurally Related Chemical Compounds Having Potential
• Application as New Sunscreen Active Ingredients
• Aqueous-Phase Photochemistry of Atmospheric Hydrocarbon Oxidation Products

Education

• Ph.D., Environmental Chemistry, Duke University , Dissertation Title: Aqueous-Phase Photochemical Production of Oxidants in Atmospheric Waters
• M.S., Analytical Chemistry, Virginia Commonwealth University, Thesis Title: Capillary Gas Chromatographic Analysis of Fischer - Tropsch Liquid Products
• B.S., Chemistry, Virginia Commonwealth University