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Your Environment. Your Health.

Progress Reports: Oregon State University: Developing and Evaluating Technology to Measure PAH Fate and Exposures

Superfund Research Program

Developing and Evaluating Technology to Measure PAH Fate and Exposures

Project Leader: Kim A. Anderson
Grant Number: P42ES016465
Funding Period: 2009-2025

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Progress Reports

Year:   2019  2018  2017  2016  2015  2014  2013  2012  2011  2010  2009 

 

One passive sampling device was further developed as part of the biological response indicator devices for gauging environmental stressor.  The background level from the previous generation of passive sampling devices (PSD) was reduced by over a factor of 100 compared with the previous versions.  Reduction in background in PSD allows for greater sensitivity of PAHs.  The PSD that were further developed were then deployed in the field in the Willamette River, Oregon.  The deployments were from summer through fall 2009 at two Superfund sites, the Portland Harbor Mega-Superfund and the remediated McCormick and Baxter Superfund sites.  The bio-analytical tool, PSD, was further validated in some initial zebrafish studies.  There were no additional zebrafish biological responses above control with the blank, negative control, PSDs.  The new PSD will be used in zebrafish bridging studies to investigate exposure effects.  The field samples from 2009 are currently in the process of clean-up, extraction, and quantifying for PAHs.  Two analytical methods were further developed for a wider range of PAH including alkylated PAHs and oxy-PAH, final validation of the methods is on-going.  The large list of analytes allows us to better understand the total PAH picture.  Identifying and quantifying a larger range of PAH analytes allows the research team to better understand risk, and allows us them better understand PAH fate, as well as profiling potential PAH sources.  Therefore expansion of the researcher's analytical capabilities is an important accomplishment.  These methods will subsequently be use on the field deployed PSD from 2009.   Initial data indicate that oxy-PAHs are sequestered by the new PSD, and that they are present at the Portland Harbor Mega-Superfund site.  A small data set of field-deployed PSDs were used in a zebrafish exposure dose response study.  Initial data evaluation and modeling with the pilot test set are underway.

 

A total of six presentations have been made, two each at the Pacific Northwest Society of Environmental Toxicology and Chemistry, the North American Society of Environmental Toxicology and Chemistry annual meeting and the Superfund Research Program annual meeting.  One joint manuscript with Dr. Tanguay of the Mechanisms of PAH-induced Developmental Toxicity project is under development, and another manuscript is under development with the Analytical Chemistry Research Support Core.  The research team has also been invited to present at the EPRI MGP (manufactured gas plant) Symposium in Houston January 2010.

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