Dr. Kristina Keating’s research focuses on using near surface geophysics to investigate the top 100 m’s of Earth’s surface. In particular, she is interested in using near-surface geophysics for hydrogeologic, biogeochemical, and cryosphere investigations. Dr. Keating uses standard geophysical methods including seismic refraction and electrical resistivity, but much of her research is focused on a novel geophysical method, nuclear magnetic resonance (NMR). Past and on-going studies in her research group includes field investigations to understand the depth and distribution of permafrost in Svalbard, laboratory studies to improve geophysical estimations of hydraulic conductivity, and computer modeling to improve the interpretation and analysis of geophysical data.
NIST’s Work in Supporting PFAS Measurements
Webinar Format: Zoom
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Speaker: Dr. Jessica Reiner, National Institute of Standards and Technology
The National Institute of Standards and Technology (NIST), an agency in The Department of Commerce, provides a wide range of reference material for quality assurance and quality control of measurements pertaining to organic pollutants in environmental and human matrices. NIST reference materials are produced to be homogeneous, stable, and with SI-traceable quantitate values for individual organic compounds. The class of organic contaminants per- and polyfluoroalkyl substances (PFAS) present measurement challenges to the analytical community that potentially affect the accuracy and precision of quantitative measurements. This talk will highlight the work NIST has done to help make PFAS measurements more accurate. In addition to making PFAS measurements more accurate, NIST has also worked with other federal and state agencies to understand PFAS contamination in wildlife (beluga whales, American alligators, Hawaiian cetaceans, ect.), soils/sediments, and water. Some of this work will also be discussed.