Contact info: email email@example.com
or see the Old Dominion University Chemistry Department home page
Dr. Mopper's research group at Old Dominion University studies marine and environmental chemistry in Antarctica and elsewhere. We have several areas of interest:
We have traveled all over the world.
We cruise the oceans of the world collecting marine samples for analysis.
Our group has taken several cruises to places like Hawaii and Antarctica.
We also have several research papers recently published (see Mopper CV for a complete list).
Chen, H.-M., Stubbins, A., Perdue, E. M., Green, N., Helms, J. R., Mopper, K. and Hatcher ,P. G. (2014) Ultrahigh resolution mass spectrometric differentiation of dissolved organic matter isolated by coupled reverse osmosis-electrodialysis from various major oceanic water masses Marine Chemistry. In press. DOI: 10.1016/j.marchem.2014.06.002.
Kieber, D.J., G.W. Miller, P.J. Neale and K. Mopper (2014). Wavelength and temperature-dependent apparent quantum yields for photochemical formation of hydrogen peroxide in seawater. Environmental Science: Processes & Impacts. Invited contribution to a special issue “Aquatic Photochemistry”, K. McNeill, Ed.,16 (4) 777 – 791. DOI:10.1039/C4EM00036F.
Sun, L.-N., Chen, H.-M., Abdulla, H.A. and K. Mopper (2014) Estimating OH radical photochemical formation rates in natural waters during long-term laboratory irradiation experiments. Environmental Science: Processes & Impacts. Invited contribution to a special issue “Aquatic Photochemistry”, K. McNeill, Ed., 16 (4), 757-763. DOI:10.1039/C3EM00587A.
Helms, J.R., J.-D. Mao, A. Stubbins, K. Schmidt-Rohr, R.G.M. Spencer, P.J. Hernes and K. Mopper (2014). Loss of optical and molecular indicators of terrigenous dissolved organic matter during long-term photobleaching. Aquatic Sciences 76, 353–373. DOI:10.1007/s00027-014-0340-0.
Minor, E.C., E. James, V. Nelson, R. Lusk, J.A. Austin and K. Mopper (2013). A preliminary examination of an in situ dual dye approach to measuring light fluxes in lotic systems. Limnol. Oceanogr. Methods. 11, 631-642.
Helms, J.R., J.-D. Mao, K. Schmidt-Rohr and K. Mopper (2013). Photochemical flocculation of terrestrial dissolved organic matter and iron. Geochim. Cosmochim. Acta 121, 398-413. http://www.sciencedirect.com/science/article/pii/S0016703713004055.
Widner, B., M.R. Mulholland and K. Mopper (2013). Chromatographic Determination of Nanomolar Cyanate Concentrations in Sea and Estuarine Waters by Precolumn Fluorescence Derivatization. Anal. Chem., 85, 6661−6666.
Helms, J.R., A. Stubbins, E. M. Perdue, N.W. Green, H.-M. Chen, and K. Mopper (2013). Photochemical bleaching of oceanic dissolved organic matter and its effect on absorption spectral slope and fluorescence. Mar. Chem. 155, 81–91.
White, E.M., D.J. Kieber, J. Sherrard, W.L. Miller and K. Mopper (2010). Carbon dioxide and carbon monoxide photoproduction quantum yields in the Delaware Estuary. Mar. Chem. 118, 11-21
Stubbins, A., R. G. M. Spencer, H.-M. Chen, P.G. Hatcher, K. Mopper, P. J. Hernes, V. L. Mwamba, A. M. Mangangu, J. N. Wabakanghanzi and J. Six (2010). Illuminating the darkness: Molecular signatures of Congo River dissolved organic matter and its photochemical alteration as revealed by ultrahigh precision mass spectrometry. Limnol. Oceanogr. 55, 1467-1477.
Spencer, R.G.M., A. Stubbins, P. J. Hernes, A. Baker, K. Mopper, A.K. Aufdenkampe, R. Y. Dyda, V. L. Mwamba, A. M. Mangangu, J. N. Wabakanghanzi and J. Six (2009). Photochemical degradation of dissolved organic matter and dissolved lignin phenols from the Congo River. Journal of Geophysical Research 114, G03010, doi:10.1029/2009JG000968.
Helms, J.R., A. Stubbins, J.D. Ritchie, E.C. Minor, D.J. Kieber and K. Mopper (2008). Absorbance spectral slopes and slope ratios as indicators of molecular weight and sources of chromophoric dissolved organic matter. Limnol. Oceanogr. 53: 955-969.
Stubbins, A., V. Hubbard, G. Uher ,C.S. Law, R.C. Upstill-Goddard, G.R. Aiken and K. Mopper (2008). Relating carbon monoxide photoproduction to dissolved organic matter functionality. Environ. Sci Technol. 42; 3271–3276.
Other noteworthy publications include:
Vairavamurthy, A. and K. Mopper (1987). Geochemical formation of organosulfur compounds (thiols) by addition of H2S to sedimentary organic matter. Nature 329: 623-625.
Mopper, K. and R.G. Zika (1987). Free amino acids in marine rains: Evidence for oxidation and potential role in nitrogen cycling. Nature 325: 246-249.
Kieber, D.J., J.A. McDaniel, and K. Mopper (1989). Photochemical source of biological substrates in seawater: Implications for carbon cycling. Nature 341: 637-639.
Mopper, K, X. Zhou, R.J. Kieber, D.J. Kieber, R.J. Sikorski, and R.D. Jones (1991). Photochemical degradation of dissolved organic carbon and its impact on the oceanic carbon cycle. Nature 353: 60-62.
Mopper, K. and X. Zhou (1990). Hydroxyl radical photoproduction in the sea and its potential impact on marine processes. Science 250: 661-664.
Kieber, R.J., X. Zhou, and K. Mopper (1990). Formation of carbonyl compounds from UV-induced photodegradation of humic substances in natural waters: Fate of riverine carbon in the sea. Limnol. Oceanogr. 35: 1503-1515.
Mopper, K and D.J. Kieber (1991). Distribution and biological turnover of dissolved organic compounds in the water column of the Black Sea. Deep-Sea Res. 38: Suppl. 2: S1021-S1047.
Mopper, K and C.A. Schultz (1993). Fluorescence as a possible tool for studying the nature and water column distribution of DOC components. Mar. Chem. 41: 229-238.
Zhou, X. and K. Mopper (1997). Photochemical production of low molecular weight carbonyl compounds in seawater and surface microlayer and their air-sea exchange. Mar. Chem. 56: 201-214.
Zhou, J., K. Mopper, and U. Passow (1998). The role of surface-active carbohydrates in the formation of transparent exopolymer particles (TEP) by bubble adsorption. Limnol. Oceanogr. 43: 1860-1871.
Yocis, B.H., D.J. Kieber, and K. Mopper (2000). Photochemical production of hydrogen peroxide in Antarctic waters. Deep-Sea Res. I 47: 1077-1099.
Qian, J.G., K. Mopper and D.J. Kieber (2001). Photochemical production of the OH radical in Antarctic waters. Deep-Sea Res. I 48: 741-759.
Weishaar, J.L., Aiken, G.R., Bergamaschi, B.A., Fram, M.S., Fugii, R., and Mopper, K. (2003). Evaluation of specific ultraviolet absorbance as an indicator of the chemical composition and reactivity of dissolved organic carbon. Environ. Sci. Technol. 37 (20): 4702-4708.
Stubbins, A., Uher, G., Law, C.S., Mopper, K., Robinson, C., and Upstill-Goddard, R.C. (2006). Open ocean carbon monoxide photoproduction. Deep-Sea Research II 53: 1695-1705.
Mopper, K., D.J. Kieber and A. Stubbins (2014) Marine photochemistry: Processes and impacts. In: Biogeochemistry of Marine Dissolved Organic Matter, 2nd Edition. D. A. Hansell and C. A. Carlson, (Eds.), Elsevier. In press.
Mopper, K., Stubbins, A., Ritchie, J.D., Bialk, H.M., and Hatcher, P.G. (2007). Advanced instrumental approaches for characterization of marine dissolved organic matter: Extraction techniques, mass spectrometry, and nuclear magnetic resonance spectroscopy. Chemical Reviews 107: 419-442. (Invited contribution to an issue dedicated to Chemical Oceanography; G.W. Luther and E.A. Boyle, editors).
Mopper, K. and D. J. Kieber (2002). Photochemistry and the cycling of carbon, sulfur, nitrogen and phosphorus. In: Biogeochemistry of Marine Dissolved Organic Matter. Chapter 9. D. Hansell and C. Carlson, (Eds.), Academic Press, pp. 455-489.
Mopper, K. and J.-G. Qian (2000). Water analysis: Organic carbon determinations. In: Encyclopedia of Analytical Chemistry. R.A. Meyers (Ed.), John Wiley and Sons, New York, pp. 3532-3541.
Mopper, K. and D. J. Kieber (1999). Marine photochemistry and its impact on carbon cycling. In: Effects of UV Radiation on Marine Ecosystems. Chapter 4, S. Demers, S. de Mora and M. Vernet (Eds.) Cambridge University Press, England.
If you are interested in learning more about the environmental and analytical chemistry that we do here, please drop by and meet us.