OHSU - PSU School of Public Health
Dr. Paul G. Tratnyek is a Professor in the OHSU-PSU School of Public Health (SPH) at the Oregon Health & Science University (OHSU) in Portland, Oregon. He received his Ph.D. in Applied Chemistry from the Colorado School of Mines (CSM) in 1987; served as a National Research Council Postdoctoral Fellow at the U.S. Environmental Protection Agency Laboratory in Athens, GA (ERD-Athens), during 1988; and as a Research Associate at the Swiss Federal Institute for Water Resources and Water Pollution Control (EAWAG) from 1989 to 1991. His research expertise is in environmental chemistry, especially the fate, effects, and remediation of contaminants. Specific areas of research include treatment processes for removing metals and organic contaminants from water, chemical oxidation and reduction processes, fate and remediation of emerging contaminants, biogeochemistry of iron and iron oxides, environmental aspects of nanomaterials, and statistical/computational methods for estimating properties needed for assessments of environmental fate and risk.
SESSION KEYNOTE PRESENTATION
Life Cycles of Emerging Contaminants: 1,2,3-Trichloropropane (TCP) vs. the Others
The life cycles of most important categories of contaminants have common features, including periods of “emergence” due to the confluence of various factors that make them priority concerns. Just a decade ago, MTBE emerged as the dominant concern, and now the contaminants of greatest concern are the per/poly-fluorinated alkyl substances (PFASs). So far, 1,2,3-trichloropropane (TCP) has not received much attention compared with MTBE or PFASs, and yet these three cases have many features in common, which suggests their life cycles may unfold similarly. To explore this hypothesis, an updated review will be given on the occurrence, fate, and prospects for remediation of TCP, with emphasis on how these aspects compare with those of MTBE and PFAS. Their common characteristics include point and non-point source occurrence scenarios, severe recalcitrance to natural and engineered degradation processes, and weak adsorption resulting in high mobility). They differ mainly in toxicity, and the timing of their timelines.