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2023
Sahle-Demessie, Endalkac, C. Han, E. Varughese, Brad Acrey, AND R. Zepp. Fragmentation and release of pristine and functionalized carbon nanotubes from epoxy-nanocomposites during accelerated weathering. Environmental Science: Nano. Royal Society of Chemistry, Cambridge, Uk, 10(7):1812-1827, (2023). https://doi.org/10.1039/D2EN01014C
Zepp, R., Brad Acrey, M. Davis, A. Andrady, J. Locklin, R. Arnold, O. Okungbowa, AND A. Commodore. Weathering Effects on Degradation of Low-Density Polyethylene-Nanosilica Composite with Added Pro-oxidant. Journal of Polymers and the Environment. Springer Nature, New York, NY, 31:4184–4192, (2023). https://doi.org/10.1007/s10924-023-02864-4
2022
Zepp, R., Brad Acrey, W. Wohlleben, E. Sahle-Demessie, AND S. McWhorter. Assessing Effects of Nano- and Microplastics in Aquatic Environments. SETAC North America 43rd Annual Meeting, Pittsburgh, PA, November 13 - 17, 2022.
Barnes, P., T. Robson, P. Neale, C. Williamson, R. Zepp, S. Madronich, S. Wilson, A. Andrady, A. Heikkilä, G. Bernhard, A. Bais, R. Neale, J. Bornman, M. Jansen, A. Klekociuk, J. Martinez-Abaigar, S. Robinson, Q. Wang, A. Banaszak, D. Häder, S. Hylander, K. Rose, S. Wängberg, B. Foereid, W. Hou, R. Ossola, N. Paul, J. Ukpebor, M. Andersen, J. Longstreth, T. Schikowski, K. Solomon, B. Sulzberger, L. Bruckman, K. Pandey, C. White, L. Zhu, M. Zhu, P. Aucamp, J. Liley, R. McKenzie, M. Berwick, S. Byrne, L. Hollestein, R. Lucas, C. Olsen, L. Rhodes, S. Yazar, AND A. Young. Environmental effects of stratospheric ozone depletion, UV radiation, and interactions with climate change: UNEP Environmental Effects Assessment Panel, Update 2021. PHOTOCHEMICAL AND PHOTOBIOLOGICAL SCIENCES. Royal Society of Chemistry, Cambridge, Uk, , 275-301, (2022). https://doi.org/10.1007/s43630-022-00176-5
Wang, D., N. Saleh, A. Byro, R. Zepp, Endalkac Sahle-Demessie, T. Luxton, K. Ho, R. Burgess, M. Flury, J. White, AND C. Su. Nano-enabled pesticides for sustainable agriculture and global food security. Nature Nanotechnology. Nature Publishing Group, London, Uk, 17:347-360, (2022). https://doi.org/10.1038/s41565-022-01082-8
Andrady, A., P. Barnes, J. Bornman, T. Gouin, S. Madronich, C. White, R. Zepp, AND M. Jansen. Oxidation and fragmentation of plastics in a changing environment; from UV-radiation to biological degradation. SCIENCE OF THE TOTAL ENVIRONMENT. Elsevier BV, AMSTERDAM, Netherlands, 851(2):158022, (2022). https://doi.org/10.1016/j.scitotenv.2022.158022
2021
Su, C., A. Byro, E. Sahle-Demessie, D. Wang, K. Ho, R. Burgess, R. Zepp, T. Luxton, S. Hu, D. McShan, AND R. Meyers. A Framework for Evaluating Engineered Nanomaterials within EPA’s Pesticide Program. CSS BOSC Meeting, NA, Virtual, November 04, 2021.
Zepp, R., Brad Acrey, Mary J. Davis, W. Wohlleben, AND E. Sahle-Demessie. Assessing polymer weathering in aquatic environmental systems. Presented at SETAC North America National Meeting, Portland; N/A (virtual), Oregon, November 14 - 18, 2021.
Neale, R., P. Barnes, T. Robson, P. Neale, C. Williamson, R. Zepp, S. Wilson, S. Madronich, A. Andrady, A. Heikkilä, G. Bernhard, A. Bais, P. Aucamp, A. Banaszak, J. Bornman, L. Bruckman, S. Byrne, B. Foereid, D. Häder, L. Hollestein, W. Hou, S. Hylander, M. Jansen, A. Klekociuk, J. Liley, J. Longstreth, R. Lucas, J. Martinez-Abaigar, K. McNeill, C. Olsen, K. Pandey, L. Rhodes, S. Robinson, K. Rose, T. Schikowski, K. Solomon, B. Sulzberger, J. Ukpebor, Q. Wang, S. Wängberg, C. White, S. Yazar, A. Young, P. Young, L. Zhu, AND M. Zhu. Environmental effects of stratospheric ozone depletion, UV radiation, and interactions with climate change: UNEP Environmental Effects Assessment Panel, Update 2020. PHOTOCHEMICAL AND PHOTOBIOLOGICAL SCIENCES. Royal Society of Chemistry, Cambridge, Uk, 20:1-67, (2021). https://doi.org/10.1007/s43630-020-00001-x
Barnes, P., C. White, A. Andrady, P. Aucamp, A. Bais, A. Banaszak, L. Bruckman, S. Byrne, B. Foereid, D. Häder, A. Heikkilä, J. Bormann, L. Hollestein, J. Martinez-Abaigar, K. McNeill, C. Olsen, L. Rhodes, T. Robson, K. Rose, T. Schikowski, K. Solomon, B. Sulzberger, K. Pandey, J. Ukpebor, Q. Wang, S. Wängberg, C. Williamson, S. Wilson, S. Yazar, A. Young, P. Young, L. Zhu, M. Zhu, G. Bernhard, R. Neale, S. Robinson, P. Neale, R. Zepp, AND S. Madronich. Summary Update for Policymakers UNEP Environmental Effects Assessment Panel: Environmental Effects of Stratospheric Ozone Depletion, UV Radiation, and Interactions with Climate Change: Update 2020. United Nations Environment Programme (UNEP), PARIS, France, 2020.
2020
Bernhard, G., R. Neale, P. Barnes, P. Neale, R. Zepp, S. Wilson, A. Andrady, A. Bais, R. McKenzie, P. Aucamp, P. Young, B. Liley, R. Lucas, S. Yazar, L. Rhodes, S. Byrne, L. Hollestein, C. Olsen, A. Young, T. Robson, J. Bornman, M. Jansen, S. Robinson, C. Ballaré, C. Williamson, K. Rose, A. Banaszak, D. Häder, S. Hylander, S. Wängberg, A. Austin, W. Hou, N. Paul, S. Madronich, B. Sulzberger, K. Solomon, H. Li, T. Schikowski, J. Longstreth, K. Pandey, A. Heikkilä, AND C. White. Environmental effects of stratospheric ozone depletion, UV radiation and interactions with climate change: UNEP Environmental Effects Assessment Panel, update 2019. PHOTOCHEMICAL AND PHOTOBIOLOGICAL SCIENCES. Royal Society of Chemistry, Cambridge, Uk, 5:542-584, (2020). https://doi.org/10.1039/D0PP90011G
Henderson, Matt, J. Spear, R. Seim, R. Zepp, Brad Acrey, AND D. Bouchard. Formation of Low Molecular Weight Products During Environmental Transformation of Graphene Oxide Modulates Toxicity in Aquatic Species. 2020 SOT Virtual Meeting, Anaheim, CA, March 15 - 19, 2020.
Zepp, R., E. Ruggiero, B. Acrey, M. Davis, C. Han, H. Hsieh, K. Vilsmeier, W. Wohlleben, AND Endalkac Sahle-Demessie. Fragmentation of polymer nanocomposites: modulation by dry and wet weathering, fractionation, and nanomaterial filler. Environmental Science: Nano. RSC Publishing, Cambridge, Uk, 7:1742-1758, (2020). https://doi.org/10.1039/C9EN01360A
Zepp, R. AND Brad Acrey. Isolating, Identifying and Quantifying Small Plastic Components of Aquatic Trash. 2020 SETAC North America Annual Meeting, Virtual, November 15 - 19, 2020.
Safaie, A., C. Weiskerger, T. Nguyen, Brad Acrey, R. Zepp, M. Molina, M. Cyterski, G. Whelan, Y. Pachepsky, AND M. Phanikumar. Modeling the photoinactivation and transport of somatic and f+ coliphages at a great lakes beach. JOURNAL OF ENVIRONMENTAL QUALITY. American Society of Agronomy, MADISON, WI, 49(6):1612-1623, (2020). https://doi.org/10.1002/jeq2.20153
Varner, K., C. P. ANDERSEN, K. T. HO, W. BOYES, AND R. G. ZEPP. State-of-the-Science: Where Are We Headed? Innovative Nanotechnology Evaluation: Next Generation Contemporary Solutions. 2020 Pan-American Nanotechnology Conference, Sao PauloB, March 04 - 07, 2020.
2019
Avant, B., D. Bouchard, H. Hsieh, Y. Han, J. Spear, R. Zepp, Chris Knightes, X. Chang, AND Brad Acrey. Environmental fate of multiwalled carbon nanotubes and graphene oxide across different aquatic ecosystems. NanoImpact. Elsevier B.V., Amsterdam, Netherlands, 13:1-12, (2019). https://doi.org/10.1016/j.impact.2018.11.001
Zepp, R., Brad Acrey, D. Bouchard, A. Commodore, O. Okungbowa, AND M. Davis. Evaluating polymer photodegradation processes in environmental systems. 2019 ACS Spring Meeting, Orlando, FL, March 31 - April 04, 2019.
Bouchard, D., X. Chang, Matt Henderson, AND R. Zepp. Interaction of Graphene Oxide and Reduced Graphene Oxide Nanomaterials with Model Biological Surfaces. Spring 2019 ACS National Meeting & Exposition, Orlando, FL, March 31 - April 04, 2019.
Knightes, Chris, R. Ambrose, B. Avant, Y. Han, Brad Acrey, D. Bouchard, R. Zepp, AND T. Wool. Modeling framework for simulating concentrations of solute chemicals, nanoparticles, and solids in surface waters and sediments: WASP8 Advanced Toxicant Module. ENVIRONMENTAL MODELLING AND SOFTWARE. Elsevier Science Ltd, New York, NY, 111:444-458, (2019). https://doi.org/10.1016/j.envsoft.2018.10.012
Bouchard, D., W. Henderson, R. Zepp, C. Knightes, Y. Han, B. Avant, AND B. Acrey. Monitoring and Modeling Oxygenated PAHs Formed During Graphene Oxide Phototransformation. 2019 National Environmental Monitoring Conference (NEMC), Jacksonville, FL, August 05 - 09, 2019.
Hsieh, H. AND R. Zepp. Reactivity of graphene oxide with reactive oxygen species (hydroxyl radical, singlet oxygen, and superoxide anion). Environmental Science: Nano. RSC Publishing, Cambridge, Uk, 6(12):3734-3744, (2019). https://doi.org/10.1039/C9EN00693A
Singh, A., W. Hou, T. Lin, AND R. Zepp. Roles of Silver–Chloride Complexations in Sunlight-Driven Formation of Silver Nanoparticles. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 53(19):11162-11169, (2019). https://doi.org/10.1021/acs.est.9b02115
Han, Y., Chris Knightes, D. Bouchard, R. Zepp, B. Avant, H. Hsieh, X. Chang, Brad Acrey, Matt Henderson, AND J. Spear. Simulating graphene oxide nanomaterial phototransformation and transport in surface water. Environmental Science: Nano. RSC Publishing, Cambridge, Uk, 6:180, (2019). https://doi.org/10.1039/c8en01088a
Sulzberger, B., A. Austin, R. Cory, R. Zepp, AND N. Paul. Solar UV radiation in a changing world: roles of cryosphere–land–water–atmosphere interfaces in global biogeochemical cycles. PHOTOCHEMICAL AND PHOTOBIOLOGICAL SCIENCES. Royal Society of Chemistry, Cambridge, Uk, 18(3):747-774, (2019). https://doi.org/10.1039/C8PP90063A
Davis, M., C. Rosal, W. Henderson, B. Acrey, R. Zepp, AND J. Washington. Tentative identification of new-generation per- and polyfluoroalkyl substances in industrial products. SETAC NA Focus Meeting: Environmental Risk Assessment of PFAS, Durham, NC, August 12 - 15, 2019.
2018
Zepp, R., Mike Cyterski, K. Wong, O. Georgacopoulos, Brad Acrey, G. Whelan, R. Parmar, AND M. Molina. Biological Weighting Functions for Evaluating the Role of Sunlight-Induced Inactivation of Coliphages at Selected Beaches and Nearby Tributaries. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 52(22):13068-13076, (2018). https://doi.org/10.1021/acs.est.8b02191
Whelan, G., K. Kim, R. Parmar, Gerry Laniak, K. Wolfe, M. Galvin, M. Molina, Y. Pachepsky, P. Duda, R. Zepp, L. Prieto, J. Kinzelman, G. Kleinheinz, AND M. Bouchard. Capturing microbial sources distributed in a mixed-use watershed within an integrated environmental modeling workflow. ENVIRONMENTAL MODELLING AND SOFTWARE. Elsevier Science Ltd, New York, NY, 99:126-146, (2018).
Avant, B., Chris Knightes, R. Zepp, D. Bouchard, X. Chang, H. Hsieh, Matt Henderson, J. Spear, Brad Acrey, AND Y. Han. Environmental Fate and Transport of Carbon-based Nanomaterials in Aquatic Ecosystems. iEMSs 2018, Fort Collins, CO, June 24 - 28, 2018.
Bais, A., R. Lucas, J. Bornman, C. Williamson, B. Sulzberger, A. Austin, S. Wilson, A. Andrady, G. Bernhard, R. McKenzie, P. Aucamp, S. Madronich, R. Neale, S. Yazar, A. Young, F. de Gruijl, M. Norval, Y. Takizawa, P. Barnes, T. Robson, S. Robinson, C. Ballare, S. Flint, P. Neale, S. Hylander, K. Rose, S. Wangberg, D. Hader, R. Worrest, R. Zepp, N. Paul, R. Cory, K. Solomon, J. Lonstreth, K. Pandey, H. Redhwi, A. Torikai, AND A. Heikkila. Environmental effects of ozone depletion, UV radiation and interactions with climate change: UNEP Environmental Effects Assessment Panel, update 2017. PHOTOCHEMICAL AND PHOTOBIOLOGICAL SCIENCES. Royal Society of Chemistry, Cambridge, Uk, 17(2):127-179, (2018).
Parmar, R. AND R. Zepp. GCSolar.NET User's Manual. U.S. Environmental Protection Agency, Office of Research and Development, National Center for Environmental Assessment, Washington, DC, EPA/600/B-18/010, 2018.
Wanjugi, P., Mano Sivaganesan, A. Korajkic, B. McMinn, C. Kelty, E. Rhodes, Mike Cyterski, R. Zepp, K. Oshima, E. Stachler, J. Kinzelman, S. Kurdas, M. Citriglia, F. Hsu, B. Acrey, AND O. Shanks. Incidence of Somatic and F+ Coliphage in Great Lake Basin Recreational Waters. WATER RESEARCH. Elsevier Science Ltd, New York, NY, 140:200-210, (2018). https://doi.org/10.1016/J.WATRES.2018.04.055
Knightes, Chris, B. Avant, Y. Han, R. Zepp, D. Bouchard, Brad Acrey, T. Wool, AND R. Ambrose. Simulating Toxicant Concentrations in Surface Waters and Sediments: Advances in the Water Quality Analysis Simulation Program (WASP8). iEMSs 2018, Fort Collins, CO, June 24 - 28, 2018.
Avant, B., Chris Knightes, R. Zepp, D. Bouchard, X. Chang, H. Hsieh, Matt Henderson, J. Spear, Brad Acrey, AND Y. Han. Simulating the Fate and Transport of Carbon-based Nanomaterials Across Different Aquatic Ecosystems. 2018 AGU Fall Meeting, Washington, DC, December 10 - 14, 2018.
Han, Y., Chris Knightes, D. Bouchard, R. Zepp, X. Chang, H. Hsieh, Matt Henderson, J. Spear, Brad Acrey, AND B. Avant. Simulating the Fate and Transport of Graphene Oxide Nanoparticles and Their Reaction Products in Surface Waters Using the Water Quality Analysis Simulation Program 8 (WASP8). 2018 ACS National Meeting & Expo, Boston, MA, August 19 - 23, 2018.
Han, Y., Chris Knightes, R. Zepp, D. Bouchard, X. Chang, H. Hsieh, B. Avant, Matt Henderson, J. Spear, AND Brad Acrey. Simulating the Fate and Transport of Nanoparticles and Their Reaction Products in Surface Waters Using the Water Quality Analysis Simulation Program 8 (WASP8). 2018 iEMSs Conference, Fort Collins, CO, June 24 - 28, 2018.
Nelson, K., A. Boehm, R. Davies-Colley, M. Dodd, T. Kohn, K. Linden, Y. Liu, P. Maraccini, K. McNeill, W. Mitch, T. Nguyen, K. Parker, R. Rodriguez, L. Sassoubre, A. Silverman, K. Wigginton, AND R. Zepp. Sunlight-mediated inactivation of health-relevant microorganisms in water: a review of mechanisms and modeling approaches. Environmental Science: Processes & Impacts. RSC Publishing, Cambridge, Uk, 20(8):1089-1122, (2018). https://doi.org/10.1039/C8EM00047F
Kim, K., G. Whelan, M. Molina, R. Parmar, K. Wolfe, M. Galvin, P. Duda, R. Zepp, J. Kinzelman, G. Kleinheinz, AND M. Borchardt. Using Integrated Environmental Modeling to Assess Sources of Microbial Contamination in Mixed-Use Watersheds. JOURNAL OF ENVIRONMENTAL QUALITY. American Society of Agronomy, MADISON, WI, 47(5):1103-1114, (2018). https://doi.org/10.2134/jeq2018.02.0071
2017
Boyes, W., L. Thornton, S. Al-Abed, C. Andersen, D. Bouchard, R. Burgess, E. Hubal, K. Ho, M. Hughes, K. Kitchin, J. Reichman, K. Rogers, J. Ross, P. Rygiewicz, K. Scheckel, S. Thai, R. Zepp, AND R. Zucker. A comprehensive framework for evaluating the environmental health and safety implications of engineered nanomaterials. CRITICAL REVIEWS IN TOXICOLOGY. CRC Press LLC, Boca Raton, FL, 47(9):767-801, (2017).
Williamson, C., S. Madronich, A. Lal, R. Zepp, R. Lucas, E. Overholt, K. Rose, S. Schladow, AND J. Lee-Taylor. Altmetric: 165More detailArticle | OPENClimate change-induced increases in precipitation are reducing the potential for solar ultraviolet radiation to inactivate pathogens in surface waters. Scientific Reports. Nature Publishing Group, London, Uk, 7:13033, (2017).
Zepp, R., W. Wohlleben, E. Sahle-Demessie, C. Kingston, D. Bouchard, B. Acrey, A. Commodore, O. Okungbowa, AND E. Walton. Approaches to evaluating weathering effects on release of engineered nanomaterials from solid matrices. ACS Fall 2017 National Meeting, Washington, DC, August 20 - 24, 2017.
Andrady, A., P. Aucamp, A. Austin, A. Bias, C. Ballare, P. Barnes, G. Bernhard, L. Bjorn, J. Bornman, N. Congdon, R. Cory, S. Flint, F. de Gruijl, D. Hader, A. Heikkila, S. Hylander, J. Longstreth, R. Lucas, S. Madronich, R. McKenzie, P. Neale, R. Neale, M. Norval, K. Padney, N. Paul, M. Rautio, H. Redhwi, S. Robinson, K. Rose, K. Solomon, B. Sulzberger, S. Wangberg, C. Williamson, S. Wilson, R. Worrest, A. Young, AND R. Zepp. Environmental effects of ozone depletion and its interactions with climate change: Progress report, 2016. PHOTOCHEMICAL AND PHOTOBIOLOGICAL SCIENCES. Royal Society of Chemistry, Cambridge, Uk, 16:107-145, (2017). https://doi.org/10.1039/C7PP90001E
Georgacopoulous, O., B. Acrey, M. Molina, AND R. Zepp. Inactivation Rates of Coliphages Isolated from Waste Water Treatment Plant Effluents in Georgia. 2017 Georgia Water Resources Conference, Athens, GA, April 19 - 20, 2017.
Avant, B., Chris Knightes, D. Bouchard, X. Chang, Matt Henderson, AND R. Zepp. Modeling Engineered Nanomaterials (ENMs) Fate and Transport in Aquatic Ecosystems. Georgia Water Resources Conference, Athens, GA, April 19 - 20, 2017.
Han, Y., Chris Knightes, D. Bouchard, R. Zepp, H. Hsieh, X. Chang, AND J. Spear. Modeling the Environmental Fate of Graphene Oxide and Its Phototransformation Products in Brier Creek Watershed Using the Water Quality Analysis Simulation Program 8 (WASP8). 2017 AGU Fall Meeting, New Orleans, LA, December 11 - 15, 2017.
Wohlleben, W., C. Kingston, J. Carter, E. Sahle-Demessie, S. Vazquez-Campos, B. Acrey, C. Chen, E. Walton, H. Egenolf, P. Muller, AND R. Zepp. NanoRelease: Pilot interlaboratory comparison of a weathering protocol applied to resilient and labile polymers with and without embedded carbon nanotubes. CARBON. Pergamon Press Ltd., New York, NY, 113:346-360, (2017). https://doi.org/10.1016/j.carbon.2016.11.011
Whelan, G., K. Kim, K. Wolfe, R. Parmar, M. Galvin, M. Molina, AND R. Zepp. Quantitative Microbial Risk Assessment Tutorial - Navigate the SDMPB and Identify an 8-digit HUC of Interest - Updated 2017. U.S. EPA Office of Research and Development, Washington, DC, EPA/600/B-15/273, 2017.
Whelan, G., K. Wolfe, R. Parmar, M. Galvin, M. Molina, R. Zepp, K. Kim, AND P. Duda. Quantitative Microbial Risk Assessment Tutorial - Primer. U.S. EPA Office of Research and Development, Washington, DC, EPA/600/B-17/323, 2017.
Kim, K., G. Whelan, K. Wolfe, R. Parmar, M. Galvin, M. Molina, AND R. Zepp. Quantitative Microbial Risk Assessment Tutorial: HSPF Setup, Application, and Calibration of Flows and Microbial Fate and Transport on an Example Watershed. U.S. EPA Office of Research and Development, Washington, DC, EPA/600/B-17/429, 2017.
Knightes, Chris, D. Bouchard, R. Zepp, Matt Henderson, Y. Han, H. Hsieh, Brad Acrey, AND J. Spear. Simulating Exposure Concentrations of Engineered Nanomaterials in Surface Water Systems: WASP8. 2017 AGU Fall Meeting, New Orleans, LA, December 11 - 15, 2017.
2016
Wolfe, K., R. Parmar, G. Whelan, Gerry Laniak, M. Galvin, K. Kim, M. Molina, R. Zepp, P. Duda, AND D. Keiser. A Workflow to Model Microbial Loadings in Watersheds. iEMSs 8th International Congress on Environmental Modelling and Software, Toulouse, FRANCE, July 10 - 14, 2016.
Wolfe, K., R. Parmar, G. Whelan, Gerry Laniak, M. Galvin, K. Kim, M. Molina, R. Zepp, P. Duda, AND D. Keiser. A Workflow to Model Microbial Loadings in Watersheds (proceedings). In Proceedings, 8th International Congress on Environmental Modelling and Software, Toulouse, FRANCE, July 10 - 14, 2016. International Environmental Modelling and Software Society, Manno, Switzerland, 4, (2016).
Andrady, A., P. Aucamp, A. Austin, A. Bias, C. Ballare, P. Barnes, G. Bernhard, L. Bjorn, J. Bornman, D. Erickson, F. de Gruijl, D. Hader, M. Ilyas, J. Longstreth, R. Lucas, S. Madronich, R. McKenzie, R. Neale, M. Norval, K. Pandey, N. Paul, H. Redhwi, S. Robinson, K. Rose, M. Shao, R. Sinha, K. Solomon, B. Sulzberger, Y. Takizawa, A. Torikai, K. Tourpali, C. Williamson, S. Wilson, S. Wangberg, R. Worrest, A. Young, AND R. Zepp. Environmental effects of ozone depletion and its interactions with climate change: progress report, 2015. PHOTOCHEMICAL AND PHOTOBIOLOGICAL SCIENCES. Royal Society of Chemistry, Cambridge, Uk, 15(2):141-174, (2016).
Zepp, R., G. Whelan, M. Molina, Mike Cyterski, K. Wong, B. Acrey, AND A. Commodore. Impacts of Tributaries on Optical Properties and Singlet Oxygen Concentrations in the Great Lakes. 251st American Chemical Society National Meeting & Exposition, San Diego, CA, March 13 - 17, 2016.
Hou, W., C. He, Y. Wang, D. Wang, AND R. Zepp. Phototransformation-Induced Aggregation of Functionalized Single-Walled Carbon Nanotubes: The Importance of Amorphous Carbon. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 50(7):3494–3502, (2016).
Zepp, R., D. Bouchard, E. Sahle-Demessie, W. Wohlleben, S. Vazquez-Campos, J. Carter, C. Kingston, R. Canady, B. Acrey, AND C. Chen. Pilot Inter-Laboratory Studies for Evaluating Weathering-Induced Release of Carbon Nanotubes from Solid Matrices. Nanotech 2016, Washington, DC, May 22 - 26, 2016.
Zepp, R., Mike Cyterski, M. Molina, C. Fitzgerald, G. Whelan, R. Parmar, K. Wolfe, AND M. Galvin. Predictive Modeling of Microbial Indicators for Timely Beach Notifications and Advisories at Marine Beaches. 2016 Recreational Waters Conference, New Orleans, LA, April 12 - 15, 2016.
Zepp, R., M. Molina, Mike Cyterski, G. Whelan, R. Parmar, K. Wong, B. Acrey, AND R. Georgacopoulous. Process Relationships for Evaluating the Role of Light-induced Inactivation of Coliphages at Selected Beaches and Nearby Tributaries of the Great Lakes. 2016 Recreational Waters Conference, New Orleans, LA, April 12 - 15, 2016.
Zepp, R., D. Bouchard, W. Hou, C. Chen, B. Acrey, X. Chang, Matt Henderson, S. Martin, AND Chris Knightes. Roles of Direct and Indirect Light-Induced Transformations of Carbon Nanomaterials in Exposures in Aquatic Systems. SETAC North America 37th Annual Meeting, Orlando, FL, November 06 - 10, 2016.
2015
Henderson, Matt, I. Chowdhury, W. Hou, X. Chang, S. Martin, R. Zepp, AND D. Bouchard. Assessing the exposure and toxicological implications of environmental transformations of graphene oxide using in vitro methods. 250th American Chemical Society National Meeting & Exposition, Boston, MA, August 16 - 20, 2015.
Erickson, D., B. Sulzberger, R. Zepp, AND A. Austin. Effects of Stratospheric Ozone Depletion, Solar UV Radiation, and Climate Change on Biogeochemical Cycling: Interactions and Feedbacks. PHOTOCHEMICAL AND PHOTOBIOLOGICAL SCIENCES. Royal Society of Chemistry, Cambridge, Uk, 14(1):127-148, (2015).
Whelan, G., M. Pelton, M. Molina, R. Zepp, J. Ravenscroft, AND Y. Pachepsky. Microbial Properties Database Editor Tutorial. U.S. EPA Office of Research and Development, Washington, DC, EPA/600/B-15/275, 2015.
Hou, W., I. Chowdhury, D. Goodwin, Matt Henderson, D. Fairbrother, D. Bouchard, AND R. Zepp. Photochemical Transformation of Graphene Oxide in Sunlight. ENVIRONMENTAL SCIENCE AND TECHNOLOGY. John Wiley & Sons, Ltd., Indianapolis, IN, 49(6):3435-3443, (2015).
Hou, W., I. Chowdhury, D. Goodwin, Matt Henderson, D. Fairbrother, D. Bouchard, AND R. Zepp. Photochemical transformation of graphene oxide in sunlight (journal). ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 49(6):3435-3443, (2015).
Barnes, B., P. Hallock, C. Hu, F. Muller-Karger, D. Palandro, C. Walter, AND R. Zepp. Prediction of Coral Bleaching in the Florida Keys Using Remotely Sensed Data. CORAL REEFS. Springer, New York, NY, 34(2):491-503, (2015).
Chen, C. AND R. Zepp. Probing Photosensitization by Functionalized Carbon Nanotubes. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 49(23):13835-13843, (2015).
Whelan, G., K. Wolfe, R. Parmar, M. Galvin, M. Molina, R. Zepp, K. Kim, M. Gray, AND P. Duda. Quantitative Microbial Risk Assessment Tutorial: Land-applied Microbial Loadings within a 12-Digit HUC. U.S. EPA Office of Research and Development, Washington, DC, EPA/600/B-15/298, 2015.
Whelan, G., K. Wolfe, R. Parmar, M. Galvin, M. Molina, R. Zepp, AND K. Kim. Quantitative Microbial Risk Assessment Tutorial: Navigate the SDMPB and Identify an 8-digit HUC of Interest. U.S. EPA Office of Research and Development, Washington, DC, EPA/600/B-15/273, 2015.
Whelan, G., K. Wolfe, R. Parmar, M. Galvin, M. Molina, R. Zepp, M. Gray, P. Duda, AND K. Kim. Quantitative Microbial Risk Assessment Tutorial: Pour Point Analysis of Land-applied Microbial Loadings and Comparison of Simulated and Gaging Station Results. U.S. EPA Office of Research and Development, Washington, DC, EPA/600/B-15/290, 2015.
Whelan, G., K. Wolfe, R. Parmar, M. Galvin, M. Molina, R. Zepp, M. Gray, P. Duda, AND K. Kim. Quantitative Microbial Risk Assessment Tutorial: Using NLDAS and NCDC Meteorological Data. U.S. EPA Office of Research and Development, Washington, DC, EPA/600/B-15/299, 2015.
Oladeinde, A., E. Lipp, C. Chen, R. Zepp, AND M. Molina. Re-growth of fecal indicator bacteria and Escherichia coli 0157:H7 B6914 in cow fecal extract. International Symposium on Waterborne Pathogens, Savannah, GA, April 13 - 14, 2015.
Chowdhury, I., W. Hou, D. Goodwin, Matt Henderson, R. Zepp, AND D. Bouchard. Sunlight affects aggregation and deposition of graphene oxide in the aquatic environment. WATER RESEARCH. Elsevier Science Ltd, New York, NY, 78(1):37-46, (2015).
Zepp, R., D. Bouchard, W. Hou, Chris Knightes, Matt Henderson, I. Chowdhury, C. Chen, H. Fairbrother, D. Goodwin, AND L. Kong. Sunlight-induced Transformations of Graphene-based Nanomaterials in Aquatic Environments. ACS National Meeting & Exposition, Boston, MA, August 17 - 20, 2015.
2014
Whelan, G., K. Kim, M. Pelton, J. Soller, K. Castleton, M. Molina, Y. Pachepsky, AND R. Zepp. An integrated environmental modeling framework for performing Quantitative Microbial Risk Assessments. ENVIRONMENTAL MODELLING & SOFTWARE. Elsevier Science, New York, NY, 55:77-91, (2014).
Molina, M., Mike Cyterski, G. Whelan, AND R. Zepp. Comparing Data Input Requirements of Statistical vs. Process-based Watershed Models Applied for Prediction of Fecal Indicator and Pathogen Levels in Recreational Beaches. Presented at AGU Fall Meeting, San Francisco, CA, December 15 - 19, 2014.
Hou, W., I. Chowdhury, D. Goodwin, Matt Henderson, H. Fairbrother, D. Bouchard, AND R. Zepp. Direct and Indirect Phototransformation of Graphene Oxide in Sunlight. Presented at 248th National Meeting of the American Chemical Society, San Francisco, CA, August 11 - 14, 2014.
Barnes, B., C. Hu, J. Cannizzaro, S. Craig, P. Hallock, D. Jones, J. Lehrter, N. Melo, B. Schaeffer, AND R. Zepp. Estimation of diffuse attenuation of ultraviolet light in optically shallow Florida Keys waters from MODIS measurements. REMOTE SENSING OF ENVIRONMENT. Elsevier Science Ltd, New York, NY, 140:519-532, (2014).
Zepp, R., O. Okungbowa, A. Andrady, J. Locklin, AND R. Arnold. Influence of Pro-Oxidant on Photodegradation of a Low-Density Polyethylene-Nanosilica Composite. Presented at Nanotech 2014, Washington, DC, June 15 - 18, 2014.
Zepp, R., Mike Cyterski, K. Kisselle, A. Kozovits, AND M. Bustamante. Photoproduction of Carbon Monoxide from Natural Organic Matter. Presented at 248th ACS National Meeting, San Francisco, CA, August 11 - 14, 2014.
Kingston, C., R. Zepp, A. Andrady, D. Boverhof, R. Fehir, D. Hawkins, J. Roberts, P. Sayre, B. Shelton, Y. Sultan, V. Vejins, AND W. Wohlleben. Release characteristics of selected carbon nanotube polymer composites. CARBON. Pergamon Press Ltd., New York, NY, 68:33-57, (2014).
Chen, C. AND R. Zepp. Solar light-induced production of reactive oxygen species by single walled carbon nanotubes in water. Presented at Gordon Research Conference, Environmental Sciences: Water, Holderness, NH, June 21 - 27, 2014.
Williamson, C., R. Zepp, R. Lucas, S. Madronich, A. Austin, C. Ballare, M. Norval, B. Sulzberger, A. Bais, R. McKenzie, S. Robinson, D. Hader, N. Paul, AND J. Bornman. Solar ultraviolet radiation in a changing climate. Nature Climate Change. Nature Publishing Group, New York, NY, 4(6):434-441, (2014).
Whelan, G., K. Kim, R. Parmar, K. Wolfe, M. Galvin, P. Duda, M. Gray, M. Molina, R. Zepp, Y. Pachepsky, J. Ravenscroft, L. Prieto, AND B. Kitchens. Using Integrated Environmental Modeling to Automate a Process-Based Quantitative Microbial Risk Assessment (presentation). Presented at International Environmental Modelling and Software Society (iEMSs), San Diego, CA, June 15 - 19, 2014.
Whelan, G., K. Kim, R. Parmar, K. Wolfe, M. Galvin, P. Duda, M. Gray, M. Molina, R. Zepp, Y. Pachepsky, J. Ravenscroft, L. Prieto, AND B. Kitchens. Using integrated environmental modeling to automate a process-based Quantitative Microbial Risk Assessment. In Proceedings, 7th International Congress on Environmental Modelling and Software (iEMSs), San Diego, CA, June 15 - 19, 2014. International Environmental Modelling and Software Society, Manno, Switzerland, 1500-1507, (2014).
2013
Beigzadeh-Milani, S., C. Jafvert, W. Hou, AND R. Zepp. Hydroxyl radical induced photo-transformation of single-walled carbon nanotubes in the aquatic environment. Presented at ACS 246th National Meeting, Indianapolis, IN, September 08 - 12, 2013.
Zepp, R., M. Molina, M. Cyterski, C. Fitzgerald, C. E. WILLIAMSON, AND S. CORSI. Impacts of Changing Precipitation on Natural Organic Matter and Microorganisms in Lakes and Reservoirs . Presented at ASLO 2013 Aquatic Sciences Meeting, New Orleans, LA, February 17 - 22, 2013.
Nowack, B., R. M. David, H. Fissan, H. Morris, J. Shatkin, M. Stintz, R. G. ZEPP, AND D. Brouwer. Potential release scenarios for carbon nanotubes used in composites. ENVIRONMENT INTERNATIONAL. Elsevier Science Ltd, New York, NY, 59:1-11, (2013).
Zepp, R., Mike Cyterski, M. Molina, AND C. Fitzgerald. Process Relationships for Evaluating the Role of Light-induced Inactivation of Enterococci at Selected Beaches and Nearby Tributaries of the Great Lakes. Presented at Workshop on Sunlight Degradation of Biomolecules and Microorganisms, Stanford, CA, April 02, 2013.
Kong, L., B. Mukherjee, Y. F. Chan, AND R. G. ZEPP. Quenching and Sensitizing Fullerene Photoreactions by Natural Organic Matter. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 47(12):6189-6196, (2013).
Hou, W., B. Stuart, R. Howes, AND R. Zepp. Sunlight-Driven Reduction of Silver Ions by Natural Organic Matter: Formation and Transformation of Silver Nanoparticles. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 47(14):7713-7721, (2013).
Mukherjee, B., R. Gourishetty, W. Zhang, T. Powell, James Weaver, R. Zepp, AND D. Bouchard. Uncoated and Polymer Coated Titanium Dioxide (TiO2)Nanoparticles: Differences in Deposition and Charge Characteristics. Presented at 2013 Spring Meeting & 9th Global Congress on Process Safety, San Antonio, TX, April 28 - May 02, 2013.
Martinez, G., Y. Pachepsky, D. Shelton, G. WHELAN, R. G. ZEPP, M. MOLINA, AND K. Panhorst. Using the Q10 model to simulate E. coli survival in cowpats on grazing lands. ENVIRONMENT INTERNATIONAL. Elsevier Science Ltd, New York, NY, 54:1-10, (2013).
2012
Wong, C., B. Mukherjee, M. Molina, R. Zepp, A. Kahler, M. Garcia, AND S. Riblet. Influence of Inorganic Ions and Aggregation and Adsorption Behaviors of Human Adenovirus. Presented at American Society of Microbiology 2012 Annual Conference, San Francisco, CA, June 16 - 21, 2012.
Wong, C., B. Mukherjee, T. Voice, I. Xagoraraki, R. Zepp, AND M. Molina. Influence of Inorganic Ions and Organic Matters on Surface Charge and Adsorption Behaviors of Human Adenovirus. Presented at Annual Southeastern Branch American Society of Microbiology Conference, Athens, GA, October 25 - 27, 2012.
Wong, C., B. Mukherjee, A. Kahler, R. Zepp, AND M. Molina. Influence of Inorganic Ions on Aggregation and Adsorption Behaviors of Human Adenovirus. ENVIRONMENTAL SCIENCE & TECHNOLOGY. American Chemical Society, Washington, DC, 46(20):11146-53, (2012).
Nowack, B., D. Brouwer, H. Fissan, M. Dahm, H. Morris, M. Voetz, T. Thomas, R. Zepp, R. David, J. Isaacs, L. Libelo, J. Shatkin, M. Miller, M. Stintz, AND M. Sandy. Potential Release Scenarios for Multi-Walled Carbon Nanotubes from Composites. Presented at ILSI Nano-Release Meeting, Bethesda, MD, June 21 - 22, 2012.
Kong, L. AND R. G. ZEPP. Production and Consumption of Reactive Oxygen Species by Fullerenes. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY. Society of Environmental Toxicology and Chemistry, Pensacola, FL, 31(1):136-143, (2012).
CYTERSKI, M. J., S. Zhang, E. M. WHITE, M. MOLINA, K. L. WOLFE, R. S. PARMAR, AND R. G. ZEPP. Temporal Synchronization Analysis for Improving Regression Modeling of Fecal Indicator Bacteria Levels. WATER, AIR, AND SOIL POLLUTION. Springer, New York, NY, 223(8):4841-4851, (2012).
Blaustein, R., Y. Pachepsky, R. Hill, G. Whelan, M. Molina, R. Zepp, AND A. Sadeghi. The Arrhenius Equation As Means to Simulate E. Coli Survival in Waters. Presented at ASA, CSSA, and SSSA International Annual Meeting, Cincinnati, OH, October 21 - 24, 2012.
2011
ZEPP, R. G., D. J. Erickson III, N. D. Paul, AND B. Sulzberger. Effects of Solar UV Radiation and Climate Change on Biogeochemical Cycling: Interactions and Feedbacks. PHOTOCHEMICAL AND PHOTOBIOLOGICAL SCIENCES. Royal Society of Chemistry, Cambridge, Uk, 10(2):261-279, (2011).