J. A. Leenheer

• Nuclear magnetic resonance spectroscopy in environmental chemistry
• A filtration and column-adsorption system for onsite concentration and fractionation of organic substances from large volumes of water
• Data on natural organic substances in dissolved, colloidal, suspended-silt and -clay, and bed-sediment phases in the Mississippi River and some of its tributaries, 1987-90
• Effects of organic wastes on water quality from processing of oil shale from the Green River Formation, Colorado, Utah, and Wyoming
• Fractionation and characterization of natural organic matter from certain rivers and soils by free-flow electrophoresis
• Physical, chemical, and biological aspects of subsurface organic waste injection near Wilmington, North Carolina
• Preparative free-flow electrophoresis as a method of fractionation of natural organic materials