Research

Chemical characterization of Dissolved Organic Matter

Multiple chemical analyses (MCA) with statistical analysis are combined to determine the composition and compositional changes in bulk DOM.  Chemical analysis include FTICR-MS, 13C (CPMAS, DPMAS) and 1H NMR, HPLC (SEC,Amino Acid,Sugar), VPO, Elemental analysis, Potentiometric tritrations, Fluorescence (EEM), and UV-Vis.  Statistical and regression analysis include principal components (PCA), hierarchical clustering (HCA), and parallel factoring (PARAFAC).

 

Design of Reverse Osmosis and Electrodialysis Coupled System

Combining the reverse osmosis for concentration of bulk DOM, along with electrodialysis for desalting Seawater contains 0.5-5 milligrams per liter DOC, in a saline matrix of 35,000 milligrams per liter salt (mostly sodium, chloride, and sulfate).  Removing salts from this matrix isParticularly the

Natural waters contain 0.5-100 milligrams per liter of dissolved organic carbon (DOC).  In this case, “dissolved” describes the portion that will pass through a 0.45 micron filter.  DOC is contained in a wide range of chemical compounds including biomolecules like sugars, lipids, and amino acids, and the bulk mixture of these compounds are referred to as dissolved organic matter (DOM).