Project 4 - Bridging Superfund Site Based Bioavailable Extracts with Biology
The organizations that remediate Superfund sites face the challenge of how to measure success; i.e., how to assess the changes in the bioavailability of contaminants. They need quantitative tools that can characterize contaminants and predict their risk to local organisms and humans. Non-chemical factors such as ultra-violet radiation can transform the parent compounds into unmonitored chemicals that can change the toxicity of waters and sediments. To address this issue, we have developed passive sampling devices (PSDs) that can sequester thousands of bioavailable chemicals. These devices can help regulatory agencies to evaluate new remediation technologies that may either produce or release previously unmonitored chemicals. We will develop PSD-bioaccumulation models that can predict chemical load in aquatic tissues with useful accuracy on the basis of measured PSD extracts. The ability to predict aquatic tissues from PSD extracts will enable Superfund managers and public health officials to collect data with better temporal and spatial resolution.
We assume a small minority of the chemicals at Superfund sites are responsible for the majority of the toxicity. We propose to help the Superfund Program achieve one of its key goals, which is to identify the components that have adverse biological effects. We will assess the impact of stressors to characterize exposure more accurately. We propose an alternative to tissue analysis that may help provide a better metric for measuring chemical concentrations in fish during remediation.
Kim Anderson, Leader, OSU
Robert Tanguay, Co-Investigator, OSU
Kevin Hobbie, Research Assistant
Glenn Wilson, Research Assistant
Norman Forsberg, Graduate Student
Lane Tidwell, Graduate Student
Steven O'Connell, Graduate Student
Alan Bergmann, Graduate Students