Garrison Sposito

623 total publications. ISI h-index: 68. Professor Sposito is the author of two physics textbooks and six books on aqueous geochemistry as applied to soils. He is editor of four books on subsurface hydrology or environmental geochemistry.

Recent Publications

Sposito, G. 2008. Geochemistry in Soil Science. In W. Chesworth (ed.), Encyclopedia of Soil Science, pp. 283-289. Springer, New York.

Sposito, G. 2008. The Chemistry of Soils. 2nd Ed. Oxford University Press, New York. 330 p.

Kwon, K. D., K. Refson, and G. Sposito. 2008. Defect-induced photoconductivity in layered manganese oxides: A density functional theory study. Phys. Rev. Lett. 100:146601 (4 pp).

Bourg, I. C., and G. Sposito. 2008. Isotopic fractionation of noble gases by diffusion in liquid water. Geochim. Cosmochim. Acta. 72:2237.

Bourg, I. C., G. Sposito, and A. C. M. Bourg. 2008. Modeling the diffusion of Na+ in compacted water-saturated Na-bentonite as a function of pore water ionic strength. Appl. Geochem. 23:3635.

Duckworth, O. W., J. R. Bargar, and G. Sposito. 2008. Sorption of ferric iron from ferrioxamine B to synthetic and biogenic layer type manganese oxides. Geochim. Cosmochim. Acta 72:3371.

Aristilde, L., and G. Sposito. 2008. Molecular modeling of metal complexation by a fluoroquinolone antibiotic. Environ. Toxicol. Chem. 27:2304.

Rakshit, S., M. Uchimiya, and G. Sposito. 2009. Iron(III) bioreduction in soil in the presence of added humic substances. Soil Sci. Soc. Am. J. 73:65.

Duckworth, O. W., S. J. M. Holmström, J. Peña, and G. Sposito. 2009. Biogeochemistry of iron oxidation in a circumneutral freshwater habitat. Chem. Geol. 260:149.

Lo, W.-C., G. Sposito, and E. Majer. 2009. Analytical decoupling of poroelasticity equations for acoustic wave propagation and attenuation in a porous medium containing two immiscible fluids. J. Engin. Math. 64:219.

Duckworth, O. W., J. Bargar, and G. Sposito. 2009. Quantitative structure-activity relationships for aqueous metal-siderophore complexes. Environ. Sci. Technol. 43:343.

Kwon, K. D., K. Refson, and G. Sposito. 2009. Zinc surface complexes on birnessite: A density functional theory study. Geochim. Cosmochim. Acta 73:1273.

Duckworth, O. W., J. R. Bargar, A. A. Jarzecki, O. Oyerinde, T. G. Spiro, and G. Sposito. 2009. The exceptionally stable Co(III)-desferrioxamine B complex. Marine Chem. 113:114.

Duckworth, O. W., J. Bargar, and G. Sposito. 2009. Coupled biogeochemical cycling of iron and manganese as mediated by microbial siderophores. Biometals 22:605.

Kwon, K.D., K. Refson, and G. Sposito. 2009. On the role of Mn(IV) vacancies in the photoreductive dissolution of hexagonal birnessite. Geochim. Cosmochim. Acta 73:3981.

Spiro, T. G., J. R. Bargar, G. Sposito, and B. M. Tebo. 2010. Bacteriogenic manganese oxides. Acc. Chem. Res. 43:2.

Aristilde, L., and G. Sposito. 2010. Binding of Ciprofloxacin by humic substances: A molecular dynamics study. Environ. Toxicol. Chem. 44:1444.

Aristilde, L., L. Melis, and G. Sposito. 2010. Inhibition of photosynthesis by a fluoroquinolone antibiotic. Environ. Sci. Technol. 44:1444.

Lo, W.-C., G. Sposito, E. Majer, and C.-L. Yeh. 2010. Motional modes of dilatational waves in elastic porous media containing two immiscible fluids. Advan. Water Resour. 33:304.

Bourg, I. C., F. M. Richter, J. N. Christensen, and G. Sposito. 2010. Isotopic mass-dependence of metal cation diffusion coefficients in liquid water. Geochem. Cosmochim. Acta 74:2249.

Bourg, I. C., and G. Sposito. 2010. Connecting the molecular scale to the continuum scale for diffusion processes in smectite-rich porous media. Environ. Sci. Technol. 44:2085.

Peña, J., K. D. Kwon, K. Refson, J. R. Bargar, and G. Sposito. 2010. Mechanisms of nickel sorption by a bacteriogenic birnessite. Geochem. Cosmochim. Acta 74:3076.

Kwon, K. D., and G. Sposito. 2010. Reactivity of biogenic manganese oxide for metal sequestration and photochemistry: Computational solid state physics study. J. Miner. Soc. Korea 23:161. (in Korean)

Kwon, K. D., K. Refson, and G. Sposito. 2010. Surface complexation of Pb(II) by hexagonal birnessite nanoparticles. Geochem. Cosmochim. Acta 74:6731.

Kwon, K. D., K. Refson, S. Bone, R. Qiao, W. Yang, Z. Liu, and G. Sposito. 2011. Magnetic ordering in mackinawite (tetragonal FeS): Evidence for strong itinerant spin fluctuations. Phys. Rev. B. 83:064402.

Bourg, I., and G. Sposito. 2011. Molecular dynamics simulations of the electrical double layer on smectite surfaces contacting concentrated mixed electrolyte (NaCl-CaCl2) solutions. J. Colloid Interface Sci. 360:701.

Bourg, I. C. and G. Sposito. 2011. Ion Exchange Phenomena. In M.E. Sumner (ed.), Handbook of Soil Science, Section B, Chap. 6. CRC Press, Boca Raton, FL.

Sposito, G. 2011. Electron shuttling by natural organic matter: Twenty years after. In P. Tratnyek, T. Grundl, and S. Haderlein (eds.), Aquatic Redox Chemistry, Chap. 5. ACS Symposium Series, American Chemical Society, Washington, DC.

Peña, J., J. Bargar, and G. Sposito.  2011.  Role of bacterial biomass in the sorption of Ni by biomass-birnessite assemblages.  Environ. Sci. Technol. 45:7338.

Lo, W-C, G. Sposito, and Y-H Huang.  2012.  Modeling seismic stimulation: Enhanced non-aqueous fluid extraction from saturated porous media under pore-pressure pulsing at low frequencies.  J. Appl. Geophys. 78:77.

Nielsen, L. C., I. C. Bourg, and G. Sposito. 2012.  Predicting CO2-water interfacial tension under pressure and temperature conditions of geologic CO2 storage.  Geochim. Cosmochim. Acta 81:28.

Harrington, J. M., D. L. Parker, J. R. Bargar, A. A. Jarzecki, B. M. Tebo, G. Sposito, and O. Duckworth. 2012. Structural dependence of Mn complexation by siderophores: Donor group dependence on complex stability and reactivity.  Geochim. Cosmochim. Acta 88:106 .

Kwon, K. D., K. Refson, and G. Sposito. 2013. Understanding the trends in transition metal sorption by vacancy sites in birnessite. Geochim. Cosmochim. Acta 101:222.

Amundson, R. and G. Sposito. 2013. Bridging the divide: Soil resources and the geosciences on a cultivated planet. In Bickford, M.E. (ed.), The Impact of the Geological Sciences on Society. Geological Society of America Special Paper 501:69-80.

Lo, W.-C., and Sposito, G. 2013. Acoustic waves in unsaturated soils. Water Resour. Res. 49:5674.

Sposito, G. 2013. Green water and global food security. Vadose Zone J. 12:doi:10.2136/vzj2013.02.0041.

Sposito, G. 2014. Sustaining "the genius of soils." In G. Jock churchman and E.R. Landa (eds.) The Soil Underfoot, pp. 395-408. CRC Press, Boca Raton, Florida.

Lo, W.-C., G. Sposito, and H. Chu. 2014. Poroelastic theory of consolidation in unsaturated soils. Vadose Zone J. 13: doi:10.2136/vzj2013.07.0117 (12 pp.).

Bone, S. E., J. R. Bargar, and G. Sposito. 2014. Mackinawite (FeS) reduces mercury(II) under sulfidic conditions. Environ. Sci. Technol. 48:10681.

Smith, C. J., J. D. Oster, and G. Sposito. 2015. Potassium and magnesium in irrigation water quality assessment. Agric. Water Manage. 157:59.

Kwon, K. D., K. Refson, and G. Sposito. 2015. Transition metal incorporation into mackinawite (tetragonal FeS). Am. Mineral.100:1509.

Peña, J., J. R. Bargar, and G. Sposito. 2015. Copper sorption by the edge surfaces of synthetic birnessite nanoparticles. Chem. Geol. 396:196.

Intergovernmental Technical Panel on Soils (numerous co-authors). 2015. Status of the World’s Soil Resources. Food and Agriculture Organization of the United Nations, Rome. 648 p.

Simanova, A., K. D. Kwon, S. E. Bone, J. R. Bargar, K. Refson, G. Sposito, and J. Peña. 2015. Probing the sorption reactivity of the edge surfaces in birnessite nanoparticles using nickel(II). Geochim. Cosmochim. Acta 164:91.

Newton, A. G., and G. Sposito. 2015. Molecular Dynamics Simulation of pyrophyllite edge surface structure, surface energies, and solvent accessibility. Clays Clay Miner. 63:278.

Kwon, K. D. and G. Sposito. 2015. Mechanistic understanding of metal sorption by phyllomanganates through density functional theory. In Feng X., W. Li, M. Zhu and D. Sparks (eds.), Advances in the Environmental Biogeochemistry of Manganese Oxides, Chap. 3. American Chemical Society, New York.