November 2011 Meeting Announcement, Delaware Valley Mass Spectrometry Discussion Group
PLEASE NOTE: We will meet in Mendel 154.
- Topic: "Development of ESI-FTICR-MS methods for the analysis of organic materials in ice core samples"
- Speaker:Amanda Grannas, Villanova
- Date: Monday, November 14, 2011. 6:30 PM
- Time: Social Hour: 6:30 PM.
Talk: 7:30 PM.
Please RSVP to Eric Manning etmanning@shimadzu.com by Thursday November 10th.
- Place: Department of Chemistry, Villanova University (Room 154, Mendel Hall)
- Directions:
- Abstract:
A new technique has emerged for the characterization of natural organic matter from diverse environments. Electrospray ionization coupled to high resolution Fourier transform ion cyclotron resonance mass spectrometry (ESI-FTICR-MS) now allows the characterization of solubilized complex mixtures of natural organic matter, often with little sample preparation. Previous work by our group has led to the development of the FTICR-MS technique to analyze soluble organic materials in ice core samples. With this capability at our disposal it is possible to probe the organic matter incorporated in ice cores at an unprecedented level of detail. Employing FTICR-MS for the study of ice core organic matter may provide a new understanding of the nature of this organic matter, leading to the discovery of multitudes of molecular species indicative of global change processes whose abundances can be compared with other change proxies (isotopes, etc.). This presentation will discuss our method development efforts, challenges we have faced, and ice core organic matter characterization from both Antarctica and Greenland.
- Bio:
Dr. Amanda M. Grannas is currently an Associate Professor of Chemistry at Villanova University. She obtained her B.S. in chemistry and math from Juniata College, Huntingdon, PA in 1998. She then joined the group of Paul B. Shepson at Purdue University, studying analytical and atmospheric chemistry.. Her research involved fieldwork in Alert, Canada (82°N) where she developed GC-MS techniques to measure carbonyl compounds emitted from the snowpack surface. Dr. Grannas obtained her Ph.D. in 2002 and then moved to The Ohio State University to begin a postdoctoral research position, working with Drs. Patrick Hatcher (Chemistry) and Yu-Ping Chin (Geological Sciences). Her research at OSU focused on aquatic and soil chemistry. Working with Dr. Hatcher, she studied the nature and fate of dissolved organic matter in terrestrial systems impacted by fires and developed FTICR methods for analysis of low concentration organic matter samples such as ice cores. With Dr. Chin, she studied the photochemical fate of persistent organic pollutants in Arctic surface waters, which allowed her to return to the Arctic for two summers of fieldwork at Toolik Lake, Alaska. Following her postdoctoral studies, she began a tenure-track position in the chemistry department at Villanova University in January 2005. Her research at Villanova focuses primarily on snow and ice chemistry in Arctic regions as well as continued work in the ice core and glaciology field, developing advanced mass spectrometry methods for the analysis of organics in ice core samples. Dr. Grannas has been able to remain active in field research, conducting studies in Barrow, Alaska in 2008, 2009 and 2011.
Please send any comments, corrections, or suggestions to
svanbram@science.widener.edu.
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