Sohn, Mary

Interim Head and Professor of Chemistry

Educational Background

B.A. Queens College 1973
M.S. Lehigh University 1978
Ph.D. Lehigh University 1979

Professional Experience

Dr. Sohn has served as chair of the Geochemistry Division of the American Chemical Society (1993). She has edited a book on organic marine geochemistry and co-authored a textbook on chemical oceanography. She reviews and edits manuscripts for several professional journals and funding agencies.

Current Research

Current research efforts are focused on the formation of nanoparticles in the environment, the effects of natural organic matter on the fate of trace substances and nanoparticles in aqueous systems and oxidation of organic matter in water treatment processes. 

Selected Publications

"Biogeochemistry of Selenium: A Review" VK Sharma,  TJ McDonald, M Sohn, GAK Anquandah, M Pettine and R Zboril. Environmental Chemistry Letters (2015) 13 (1) 49-58. 

"A Critical Review of Selenium Analysis in Natural Water Samples" M Pettine, TJ McDonald, M Sohn, GAK Anquandah, R Zboril and VK Sharma. Trends in Environmental Analytical Chemistry (2015) 5, 1-7.

" Effect of Humic Acid Source on Humic Acid Adsorption onto Titanium Dioxide Nanoparticles" M Erhayem and M. Sohn. Science of the Total Environment (2013) 470-471C, 92-98.

"Stability Studies for Titanium Dioxide Nanoparticles upon Adsorption of Suwannee River Humic and Fulvic Acids and Natural Organic Matter" M Erhayem and M. Sohn.  Science of the Total Environment (2013)468-469, 249-257.

 "Transport and Deposition of Suwannee River Humic Acid/Natural Organic Matter Formed Silver Nanoparticles on Silica Matrices: The Influence of Solution pH and Ionic Strength" N. Akaighe, S.W. Depner, S. Banerjee and M. Sohn. Chemosph.(2013) 92, 406-412.

"Environmental Speciation of Arsenic" V.K. Sharma, M. Sohn, M. Pettine and B. Casentini. in Arsenic Sources, Environmental Impact, Toxicity and Human Health - A Medical Geology Perspective. Andrea Masotti (Editor), Nova Publishers, Ny  (2013) pp. 53-68. 

"Interactions of Aqueous Ag+ with Fulvic Acids: Mechanisms of Silver Nanoparticle Formation and Investigation of Stability" N. Adegboyega, V.K. Sharma, K. Siskova, R. Zboril, M. Sohn, B. Schultz, and S. Banerjee. ES&T.  (2013), 47(2), 757-764.

"Organic Matter Source Discrimination by Humic Acid Characterization: Synchronous Scan Fluorescence Spectroscopy and Ferrate(VI)" C. Horst, V.K. Sharma, J.C. Baum and M. Sohn. Chemosph. (2013) 90,2013-2019.

"The Effects of Monovalent and Divalent Cations on the Stability of Silver Nanoparticles Formed from Direct Reduction of Silver Ions by Suwannee River Humic Acid/Natural Organic Matter" N. Akaighe, S.W. Depner, S. Banerjee, V.K. Sharma and M. Sohn. Sci. Tot. Environm., 441, 277-289 (2012).

"Kinetics of the Oxidation of Sucralose and Related Carbohydrates by Ferrate(VI)" V.K. Sharma, M. Sohn, G.A.K. Aquandah and N. Nesnas, Chemosph., 87, 644-648, (2012).

"Oxidation of Amino Acids, Peptides, and Proteins by Chlorine Dioxide. Implications For Water Treatment" V. K. Sharma and M. Sohn, in Environmental Chemistry For a Sustainable World, Vol. 2: Remediation of Air and Water Pollution. E. Lichtfouse, J. Schwarzbauer and D. Robert (Eds.) Springer, pp. 237-254 (2012).

"Formation and Stability of Silver Nanoparticles in Aquatic Environments" V.K. Sharma, M. Sohn, N. Akaighe,N. Adegboyega, and S. Banerjee, 243rd ACS National Meeting & Exposition, San Diego, CA, USA (2012)

"Silver Nanoparticle Metrology, Chemistry and Materials Science for Predicting Environmental Transformations" R.I. MacCuspie, K. Rogers, M. Patra, Z. Suo, A.J. Allen, M.N. Martin,V.A. Hackley, N. Akaighe, D.A. Navarro, D.S. Aga, S. Banarjee, M. Sohn and V.K. Sharma, , R.I. MacCuspie, D.A. Navarro, D.S. Aga, S. Banarjee, M. Sohn and V.K. Sharma et al. 243rd ACS National Meeting & Exposition, San Diego, CA, USA (2012)

"Towards Predicting the Environmental Persistence and Transformations of Silver Nanoparticles"  R.I. MacCuspie, J.M. Gorham, R.D. Holbrook, D.H. Fairbrother N. Akaighe, D.A. Navarro, D.S. Aga, S. Banarjee, M. Sohn and V.K. Sharma,  243rd ACS National Meeting & Exposition, San Diego, CA, USA (2012)D.A. Navarro, D.S. Aga, S. Banarjee, M. Sohn and V.K. Sharma et al. 243rd ACS National Meeting & Exposition, San Diego, CA, USA (2012)

"Humic Acid-Induced Silver Nanoparticle Formation Under Environmentally Relevant Conditions" N. Akaighe, R.I. MacCuspie, D.A. Navarro, D.S. Aga, S. Banarjee, M. Sohn and V.K. Sharma, ES&T, 45, 3895-3901 (2011).

"Quantitative Determination of Corticosteroids in Bovine Milk Using Mixed-Mode Polymeric Strong Cation Exchange Solid-Phase Extraction and Liquid Chromatography-Tandem Mass Spectrometry" A. Tolgyesi, L. Tolgyesi, V.K. Sharma, M. Sohn and J. Fekete, Journ. Pharmaceut. and Biomed. Anal., 53, 919-928 (2010).

"The Biogeochemistry of Arsenic in Aquatic Environmental Systems" V.K. Sharma and M. Sohn, Lab International, 23(3), 18-20 (2009).

"Sustainable Water Supplies:Reducing the Organic Matter Content of Potable Water" M. Sohn, in Sustainability 2009:The Next Horizon, G.L. Nelson and I. Hronszky (editors), American Institute of Physics, Vol. 1157,138-146 (2009).

"Aquatic Arsenic: Toxicity, Speciation, Transformations, and Remediation" V.K. Sharma and M. Sohn, Environment International, 35, 743-759 (2009).

"The Effects of Humic Acids on the Oxidation of As(III) by Chemical Oxidants in Water" R. Gurung, V.K. Sharma, and M. Sohn, Abstract, 83rd Annual Florida Meeting and Exposition, American Chemical Society, Orlando, Florida (2007)

"Crysta lRiver/Kings Bay Sediment Evaluation; Final Report" to The Southwest Florida Water Management District. T.V. Belanger, M. Sohn, J. Trefry, T. Price (2005)

"Heterogeneous Photocatalytic Reduction of Ferrate(VI) in UV-Irradiated Titania Suspensions: Role in Enhancing Destruction of Nitrogen-Containing Pollutants" V.K. Sharma, K. Winkelmann, Y. Krasnova, C. Lee, and M. Sohn, International Journal of Photochemistry, 5, 183-190 (2003)

"The Use of Selected Sediment Analyses to Answer Lake Management Questions: A Case Study for Lake Panasoffkee, Florida", T.V. Belanger, M.L. Sohn, H.H. Heck,P.R. Sweets, H.A. Harris and N. Julien, Chemistry and Ecology, 11(3), 229-254 (1995)

"Functional Group Content of Humic Acids Related to Zn(II) and Cd(II) Formation Constants" D.F. Cameron and M.L. Sohn, Science of the Total Environment, 113, 121-132 (1992)

"Marine Chemistry", F. Millero amd M. Sohn,(textbook), CRC Press, 531 pp., (1992)

"The Adsorption of Cd(II) from Seawater by Humic Acids of Various Sources of Origin", M. Sohn and S. Rajski, Organic Geochemistry, 15(4), 439-447 (1990)

"Organic Marine Geochemistry", M.L. Sohn(editor), ACS Symposium Series Volume #305, 427 pp (1986)

C-13 NMR Spectra and Cu(II) Formation Constants for Humic Acids from Fluvial, Estuarine and Marine Sediments",M. Sohn and D. Weese, Marine Chemistry, 20(1), 61-72 (1986)

"The Adsorption of Organomercury Compounds from Seawater onto Sedimentary Phases" C. Dalland, E. Schumacher and M.L. Sohn in Organic Marine Geochemistry, M.L. Sohn (editor), ACS Symposium Series Volume #305, 360-381 (1986)

"CPMAS C-13 NMR Spectra of Estuarine Sedimentary Humic Acids" M. L. Sohn, Organic Geochemistry 8, 203-206 (1985)

"Metal Ion Complex Formation Constants of Some Sedimentary Humic Acids with Zn(II), Cu(II) and Cd(II)" M.L. Sohn and M.C. Hughes, Geochim. Cosmochim. Acta, 45, 2393-2399 (1981)