Jon Chorover
Department Head and Professor, Department of Soil, Water, and Environmental Science
Director, Arizona Laboratory for Emerging Contaminants
(520) 621-1646

Our research group focuses on biogeochemical processes occurring in soil, sediment and water. Of particular interest are components and processes that influence the form and mobility of metals and organic compounds in the earth’s near-surface environment. We combine field studies and laboratory experiments with the tools of analytical chemistry to investigate how interactions between biotic and abiotic components of biogeochemical systems (plants, microbes, solutions, gases, mineral particles, natural organic matter, pollutants) affect processes essential to environmental health, such as carbon sequestration, contaminant attenuation, and soil formation.

Selected Citations: 

Perdrial, J., J. McIntosh, A. Harpold, P.D. Brooks, X. Zapata-Rios, J. Ray, T. Meixner, T. Kanduc, M. Litvak, P.A. Troch, and J. Chorover. 2014. Stream water carbon controls in seasonally snow-covered mountain catchments: impact of inter-annual variability of water fluxes, catchment aspect and seasonal processes. Biogeochemistry 118:273–290. DOI 10.1007/s10533-013-9929-y.

Dontsova, K., D. Zaharescu, W. Henderson, S. Verghese, N. Perdrial, E. Hunt, and J. Chorover. 2014. Impact of organic carbon on weathering and chemical denudation of granular basalt. Geochimica et Cosmochimica Acta 139, 508–526.

Hayes, S.M., R.A. Root, N. Perdrial, R.M. Maier, and J. Chorover. 2014. Surficial weathering of iron sulfide mine tailings under semi-arid climate. Geochimica et Cosmochimica Acta 141 (2014) 240-257.

Vazquez-Ortega, A., S. Hernandez-Ruiz, M.K. Amistadi, C. Rasmussen, and J. Chorover. 2014. Fractionation of dissolved organic matter by (oxy)hydroxide-coated sands: Competitive sorbate displacement during reactive transport. Vadose Zone J. DOI:10.2136/vzj2013.10.0179.

Root, R. A., S. Fathordoobadi, F. Alday, W. Ela, and J. Chorover. 2013. Microscale speciation of arsenic and iron in ferric-based sorbents subjected to simulated landfill conditions. Environ. Sci. Technol. 47, 12992-13000. DOI: 10.1021/es402083h.

Hayes, S. M., S. M. Webb, J. R. Bargar, P. A. O’Day, R. M. Maier, and J. Chorover. 2012. Geochemical weathering increases lead bioaccessibility in semi-arid mine tailings. Environ. Sci. Technol. 46, 5834−5841, DOI:

Gao, X.L., and J. Chorover. 2012. Adsorption of PFOA and PFOS to the nano-hematite surface as studied by flow-through ATR-FTIR spectroscopy. Environ. Chem. 9, 148-157, DOI: 10.1071/EN11119.

Mueller, K. E., D. M. Eissenstat, S. E. Hobbie, J. Oleksyn, A. Jagodzinski, P. B. Reich, O. A. Chadwick, and J. Chorover. 2012. Tree species effects on coupled cycles of carbon, nitrogen, and acidity in mineral soils in a common garden experiment. Biogeochem. 111, 601-614. DOI: 10.1007/s10533-011-9695-7

Wickramasekara, S., L. Abrell, R. Arnold, and J. Chorover. 2012. Natural dissolved organic matter affects electrospray ionization during analysis of emerging contaminants by mass spectrometry. Anal. Chim. Acta, 717, 77-84, doi:10.1016/j.aca.2011.12.019

Hernandez Ruiz, S., L. Abrell, S. Wickramasekara, B. Chefetz, and J. Chorover. 2012. Quantifying PPCP interaction with dissolved organic matter in aqueous solution: Combined use of fluorescence quenching and tandem mass spectrometry. Water Research, 46, 943-954. doi:10.1016/j.watres.2011.11.061.

Chang, H. S., W. Um, K. Rod, R. J. Serne, A. Thompson, N. Perdrial, C. I. Steefel, and J. Chorover. 2011. Strontium and cesium release mechanisms during unsaturated flow through waste-weathered Hanford sediments. Environ. Sci. Technol. 45, 8313-8320. DOI: 10.1021/es2010368.

Chorover, J., P. A. Troch, C. Rasmussen, P. D. Brooks, J. D. Pelletier, D. D. Breshears, T. E. Huxman, Shirley A. Kurc, K. A. Lohse, J. C. McIntosh, T. Meixner, M. G. Schaap, M. E. Litvak, J. Perdrial, A. Harpold, M. Durcik. 2011. How water, carbon, and energy drive landscape evolution and surface water dynamics: The Jemez River Basin – Santa Catalina Mountains Critical Zone Observatory. Vadose Zone J., Special Issue on the Critical Zone. 10, 884-889. : 10.2136/vzj2010.0132.

Bern, C. R., O. A. Chadwick, A. S. Hartshorn, L. M. Khomo, and J. Chorover. 2011. A mass-balance model to separate and quantify colloidal and solute redistributions in soil. Chem. Geol., 282, 113-119. doi:10.1016/j.chemgeo.2011.01.014.

Research Themes: 
Arid lands
Climate variability
Geological processes
Risk management
Water quality
Public Health
Soil contaminants
Sustainable mining
Water contaminants
Biogeochemical processes
Public Health
Water reuse
Watershed hydrology

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