Applying two dimensional correlation spectroscopy to 13C-NMR and FTIR spectra of the high molecular-weight dissolved organic matter (HMW-DOM) isolated along an Elizabeth River/Chesapeake Bay salinity transect shows that HMW-DOM consists of three major components that have different biogeochemical reactivities. Coupling these results with proton nuclear magnetic resonance (1H-NMR) by 2D- correlation analysis give us more insightful characterization of the chemical nature of each of these three major components and reveals that each of these components contains mixtures of compounds that share similar major functional groups but have significant differences in other minor functional groups.
Employing 2D correlation to Fourier transform ion cyclotron resonance (FT-ICR) mass spectra allows us to more closely examine changes that occur in the DOM at the molecular level and understand how these thousands of individual compounds are correlated with each other and how they respond to different external perturbations. The power of this technique is its ability to be used on either the presence/absence of the individual peaks or on their normalized magnitudes. The presence or absence of the peaks are utilized to identify the reactivity and correlation between peaks that plot in different regions of the van Krevelen diagram, whereas the normalized magnitudes are used to correlate the changes among individual peaks. One of the promising advantages of 2D correlation of FTICR-MS data is the ability to associate the variations of the individual peaks with the changes in the functional groups that are measured by other spectroscopic techniques. This approach takes us one step further, from identifying molecular formulas to proposing chemical structures.
In 1989 he joined Penn State University as Associate Professor. Promoted to Professor in 1995, he was appointed Director of the Center for Environmental Chemistry and Geochemistry in 1996, and to Adjunct Professor of Chemistry in 1996.
In 1998, he joined the Department of Chemistry at Ohio State where he directed the NSF-funded Environmental Molecular Science Institute and held a faculty position in the Department of Geological Sciences.
Dr. Hatcher came to ODU in 2006 where he serves as the Batten Endowed Chair in Physical Sciences, professor in the Department of Chemistry and Biochemistry, Faculty Director of the College of Sciences Major Instrumentation Center, and the Executive Director of the Virginia Coastal Energy Research Consortium.
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