Since 1998, The Contaminated Site Clean-Up Information (CLU-IN) website has presented Internet Seminars covering a wide variety of technical topics related to hazardous waste characterization, monitoring, and remediation. For select seminar topics offered since 2012, we are making complete video recordings available through our archives. This feed contains all video seminars archived in the last 12 months. For a complete list of seminars archived since 2000, please visit http://www.clu-in.org/live/archive/. Our Rehabilitation Act Notice for reasonable accommodation is available at http://www.clu-in.org/training/accommodation.cfm. CLU-IN was developed by the U.S. Environmental Protection Agency (EPA) but is intended as a forum for all waste remediation stakeholders. For more information and to view upcoming live offerings, please visit http://www.clu-in.org/live/. For a complete list of RSS feeds available on CLU-IN, please visit http://www.clu-in.org/rss/about/.
http://www.clu-in.org/live/archive
Analytical Tools and Methods: Session III - Fate and Transport of Contaminants (Jun 12, 2017)
This webinar series highlights innovative analytical tools and methods developed and used by Superfund Research Program (SRP) grantees. The presenters will feature the benefits of these new tools and methods compared to conventional methods. They also will include information about how the technology has helped to facilitate ongoing SRP research. During the third session of the series, speakers will highlight tools and methods to detect contaminants and measure their fate and transport in the environment. The speakers will highlight work related to polychlorinated biphenyls (PCBs), per- and polyfluoroalkyl substances (PFASs), chlorinated solvents, and other chemicals in the environment. Keri Hornbuckle, Ph.D., professor of civil and environmental engineering at the University of Iowa, will discuss advances in the measurement of PCBs in complex environmental matrices. Her laboratory has developed methods for reproducible, accurate, and precise measurements of all 209 PCB congeners at sub-ppb levels in indoor and ambient air, water, soils, sediments, pore waters, plant tissues, and human blood serum. She will discuss methods for sampling, pressurized solid extraction, automated concentration and purification, detection using triple quadrupole mass spectrometry, and quality control and assurance methods that deliver whole method quantification limits less than 1 ng of total PCBs /sample. Jennifer Guelfo, Ph.D., a postdoctoral researcher and State Agencies Liaison in the Brown SRP Center, will provide background related to PFASs and discuss key challenges and knowledge gaps related to fate and transport. She will also present an overview of PFAS occurrence in large-scale drinking water systems across the United States using data from EPA?s unregulated contaminant monitoring rule (UCMR)-3 collection effort. Lastly, she will introduce a collaborative effort between the Brown SRP and state regulators that is targeted at providing a user-friendly geospatial framework for identification of potential PFAS source zones. Mark Brusseau, Ph.D., professor in the school of earth and environmental sciences at the University of Arizona, will describe the Integrated Contaminant Elution and Tracer (ICET) test for improved characterization of mass transfer, attenuation, and mass removal. Extensive and persistent groundwater contaminant plumes are widespread at sites contaminated by compounds such as chlorinated solvents, 1,4-dioxane, Methyl Tertiary Butyl Ether, and perfluorinated chemicals. Improved characterization methods are needed to delineate and quantify the processes and factors that contribute to plume persistence. This presentation will summarize the ICET test, with illustrative applications for characterizing constraints to mass removal. To view this archive online or download the slides associated with this seminar, please visit https://clu-in.org/conf/tio/SRPAnalyticalT&M3_061217/