Dr. Heittiarachchi expertise is in the biogeochemical transformations of nutrients and potentially toxic elements and their role in controlling plant-soil transfer, as well as mobility and attenuation processes in soil-water systems.
De Livera, D. Beak, M.J. McLaughlin, G.M. Hettiarachchi, and J.K. Kirby. Release of dissolved cadmium and sulfur nanoparticles from oxidizing sulfide minerals. Soil Science Society of America Journal, 75: 842- 854, 2011.
Lombi, E., G.M. Hettiarachchi, and K.G. Scheckel. Advanced in situ spectroscopic techniques and their applications in environmental biogeochemistry: Introduction to the special section. Journal of Environmental Quality 40:659-666, 2011.
Beak, D., J.K. Kirby, G.M. Hettiarachchi, L.A. Wendling, M.J. McLaughlin, and R. Khatiwada. Cobalt distribution and speciation in spiked soils: Effect of aging, intermittent submergence and in situ rice roots. Journal of Environmental Quality, 40:679-695, 2011.
De Livera M.J. McLaughlin, G.M. Hettiarachchi, J.K. Kirby, and D.G. Beak. Cadmium solubility in paddy soils: effects of soil oxidation, sulfide equilibria and competitive ions. Science Total Environment. 409:1489-1497, 2011.
Premarathna, H.M.P.L., G.M. Hettiarachchi, and S.P. Indrarathne. Trace metal concentration in crops and soils collected from intensively cultivated areas of Sri-Lanka. Pedology, 54: 230-240, 2011.
Recent and Ongoing Water-Related Projects
'Westar Wetland Project.' Hutchinson, S., Hettiarachchi, G.M., L. Erickson, and L. Davis. Westar Energy. 2011-2013.
"Sustainable Gardening Initiatives at Brownfields Sites." Hettiarachchi , G.M., S. Martin, B. Leven, T. Carey, D. Presley, L. Erickson, and G.M. Pierzynski. USEPA. 2008-2013.
Honors and Recognitions
2010 NSF ADVANCE Award to host Dr. Rufus Chaney, USDA-ARS, as a guest speaker
2009 NSF ADANCE Travel Award to travel to 10th International Conference on Biogeochemistry of Trace Elements, Chihuahua, Mexico
2008 NSF ADVANCE Award to host Prof. Scott Fendorf, Stanford University, as a guest speaker
2004- 2007 Australian Research Council (ARC) Research Fellowship, The University of Adelaide, Adelaide, Australia