Aluminum, being the most abundant metallic element, is extremely neurotoxic, especially to children. Humic materials can greatly alter mobilization and speciation of aluminum depending on pH. This study focuses on Al-Fulvic Acid complexes using nuclear magnetic resonance at pH 3 to 5, aluminum ion concentration 20 to 150 mg/L and fulvic acid concentrations from 100 to 5000 mg/L. Metal speciation models (MINTEQ & GEOCHEM ) are also incorporated to explore aluminum speciation.
PROFESSIONAL ACTIVITY (PRESENTATION/POSTER):
|04-2004||UMass Lowell Student Research Symposium (Poster)|
|03-2004||Humic Substance Seminar VII (Presentation)||Powerpoint|
|04-2003||UMass Lowell Student Research Symposium (Poster)|
|03-2003||Pittsburgh Conference (Poster)|
|08-2002||ACS Boston Geochemistry Division (Presentation)||Powerpoint|
|07-2002||Humic Substance Seminar VI (Presentation)|
|07-2002||20th IHSS Conference|
|04-2002||UMass Lowell Student Research Symposium (Poster)|
|03-2001||Humic Substance Seminar V|
Lee, N.C.Y., Ryan, D.K. and Rajesh, G. (2005) Quantitative Analysis of Aluminum and Soil Fulvic Acid Complexes by Solution State Aluminum-27 Nuclear Magnetic Resonance Spectroscopy. In: Humic Substances: Molecular Details and Applications in Land and Water Conservation, Ghabbour E. and Davies G (eds.), Taylor & Francis.
Lee, N.C.Y. and Ryan, D.K. (2003) Study of Fulvic-Aluminum(III) Ion Complexes By 27Al Solution NMR. In: Humic Substances: Nature's Most Versatile Materials, Ghabbour, E. and Davies, G. (eds.), Taylor & Francis.