Full publication list also available on Google Scholar

  1. 2020-Present
  2. 2015-2019
  3. 2010-2014
  4. 2002-2009
  5. 1996-2001



Arnold, W.A., Blum, A., Branyan, J., Bruton, T.A., Carnignan, C.C., Corotopassi, G., Datta, S., DeWitt, J., Doherty, A.-C., Halden, R.U., Harari, H., Hartmann, E.M., Hrubec, T.C., Iyer, S., Kwiatowski, C.F.*, LaPeir, J., Li, D., Li, L., Muniz Ortiz, J.G., Salamova, A., Schettler, T., Segun, R.P., Soehl, A., Sutton, R., Xu, L., Zheng, G. 2023. Quaternary Ammonium Compounds: A Chemical Class of Emerging Concern, Environ. Sci. Technol., accepted.

Li, J., Mundhenke, T.F., Smith, T.G., Arnold, W.A., Pomerantz, W.C.K. 2023. Fluorous Liquids for Magnetic Resonance-Based Thermometry with Enhanced Responsiveness and Environmental Degradation. Anal. Chem. accepted.

Bhat, A.P., Pomerantz, W.C.K., Arnold, W.A. 2023. Wavelength-dependent UV-LED photolysis of fluorinated pesticides and pharmaceuticals. Environ. Sci. Technol., accepted.

Schroer, H.; Londono, E.; Li, Xueshu; Lehmier, H.-J.; Arnold, W.A.; Just, C.L. Photolysis of 3-nitro-1,2-3-triazol-5-one: mechanisms and products. ACS ES&T Water, 3, 783–792. Open Access.

He, H.; Bueno, I.; Kim, T.; Wammer, K.H.; LaPara, T.M.; Singer, R.; Beaudoin, A.; Arnold, W A. 2023. Determination of the antibiotic and antibiotic-resistance footprint in surface water environments of a metropolitan area: Effects of anthropogenic activities. ACS ES&T Water,  3, 387–399. Open Access. Data set

McAdams, B.C., Hudson, J., Arnold, W.A., Chin, Y.-P. 2023. Effects of Aquatic Dissolved Organic Matter Redox State on Adsorption to Goethite. Aquatic Sci. 85, article no. 19.


Bhat, A.P., Pomerantz, W.C.K., Arnold, W.A. 2022 Finding Fluorine: Photoproduct Formation during the Photolysis of Fluorinated Pesticides. Environ. Sci. Technol. 56, 12336-12346.

Voelz, J.L., Hobart, K.K., Stahovich, K.A., Ziebol, H.E., Harper, N.A., Feinberg, J.M., Arnold, W.A., Penn, R.L. 2022. Organic matter inhibits recoxy activity and impacts heterogeneous growth of iron (oxyhydry)oxides on nano-hematite. ACS Earth Space Chem. 6, 847-860..

Bueno, I., Rodriquez, A., Beaudoin, A., Arnold, W.A., Wammer, K.H., de la Torre, A., Singer, R.S. 2022. Identifying the spatiotemporal vulnerability of soils to antimicrobial contamination through land application of animal manure in Minnesota, United States. Sci. Total Environ., 832, 155050.

Bhat, A.P., Mundhenke, T.F., Whiting, Q.T., Peterson, A.A., Pomerantz, W.C.K. Arnold, W.A. 2022. Tracking Fluorine during Aqueous Photolysis and Advanced UV Treatment of Fluorinated Phenols and Pharmaceuticals Using a Combined 19FNMR, Chromatography, and Mass Spectrometry Approach. ACS Environmental Au, 2, 242-252. Open Access.

Soroush, A., R.L. Penn, Arnold, W.A. 2022. Anisotropic Oxidative Growth Of Goethite-Coated Sand Particles In Column Reactors During 4-Chloronitrobenzene Reduction by Fe(II)/Goethite. Envrion. Sci.: Nano, 9, 275-288. Open Access

Chen, S. Arnold, W.A., Wright, N.C., Zhu, K., Ajayi, O., Novak, P.J., 2022. Encapsulation technology for decentralized brewery wastewater treatment: a small pilot experiment. Bioresour. Technol. 347, 126435.


McAdams, B.C., Arnold, W.A., Wilkins, M.J., Chin, Y.P. 2021. Ice cover influences redox dynamics in prairie pothole wetland sediments. J. Geophys. Res-Biogeo. 126(10), e2021JG006318.

Bueno, I., Beaudoin, A., Arnold, W.A., Kim, T., Frankson, L.E., LaPara, T.M., Kanankege, K., Wammer, K.H., Singer, R.S. 2021. Quantifying and predicting antimicrobials and antimicrobial resistance genes in waterbodies through a multidisciplinary/holistic approach: A study in Minnesota, United States. Scientific Reports, 11, Article Number 18747. Open Access

Buth, J.M., Ossola, R., Partanen, S.B., McNeill, K., Arnold, W.A., O’Connor, M., Latch, D.E. 2021. Kinetics and pathways of the aqueous photolysis of pharmaceutcial pollutants: A versatile laboratory or remote learning investigation. J. Chem. Ed. 98, 7, 2411–2418. Chemrxiv version

Tong, Y., Berens, M.J., Ulrich, B.A., Bolotin, J., Strehlau, J.H., Hofstetter, T.B., Arnold, W.A. 2021. Exploring the utility of compound-specific isotope analysis for assessing ferrous iron-mediated reduction of RDX in the subsurface. Environ. Sci. Technol. 55(10), 6752-6763. Chemrxiv version.

Compound Specific Isotope Analysis of Mineral-Mediated Abiotic Reduction of Nitro Compounds – Final Report and Guidance Document (link).

Natarajan, P., Gulliver, J.S., Arnold, W.A. 2021. Iron filings application to reduce lake sediment phosphorus release. Lake Reserv. Manag., 37 (2), 143-159.

Berens, M.B., Capel, P.D., Arnold, W.A. 2021. Neonicotinoid Insecticides in Surface Water, Groundwater, and Wastewater across Land Use Gradients and Potential Effects. Environ. Tox. Chem. 40(4)1017-1033. Open Access. Associated data set.

Wu, B., Arnold, W.A., Ma, L. 2021. Photolysis of Atrazine: Role of Triplet Dissolved Organic Matter and Limitations of Sensitizers and Quenchers. Water Res. 190, 116659.

Chen, S. Arnold, W.A., Novak, P.J. 2021. Encapsulation Technology to Improve Biological Resource Recover: Recent Advancements and Research Opportunities, Environ Sci.: Wat. Res. Technol. 7, 16-23.


Brooker, M.R., Arnold, W.A., Kerrigan, J.F., LaPara, T.M., Witter, J.D., Mouser, P.J. 2020. Characterization of Antibiotic Resistance and Metal Homeostasis Genes in Midwest USA Agricultural Sediments. Water, 12(9), 2476

Hora, P.I., Pati, S.G., McNamara, P.J., Arnold, WA. 2020. Increased Use of Quaternary Ammonium Compounds during the SARS-CoV-2 Pandemic and Beyond: Consideration of Environmental Implications. Environ. Sci. Technol. Lett. 7(9), 622-631.

Zhu, K., Davis, C.W., Novak, P.J., Arnold, W.A 2020. Effects of Encapsulation on the Chemical Inhibition of Anaerobic Hydrogen- and Methane-producing Microbial Cells. Biorsour. Techonol. Rep. 11, 100451.

Chen, Y., Hozalski, R.M., Olmanson, L., Page, B., Finlay, J., Brezonik, P.L., Arnold, W.A. 2020. Prediction of Photochemically Produced Reactive Intermediates in Surface Waters via Satellite Remote Sensing. Environ. Sci. Technol. 54, 6671-6681.

Liu, C., Hatton, J., Arnold, W.A., Simcik, M.F., Pennell, K.D. 2020. In situ sequestration of perfluoroalkyl substances using polymer-stabilized activated carbon. Environ. Sci. Technol. 54, 6929-6936.

Hora, P.I., Arnold, W.A. 2020. Photochemical fate of quaternary ammonium compounds in river water. Environ. Sci.: Processes Impacts, 22, 1368-1381. Open Access.

Berens, M., Hofstetter, T.B., Bolotin, J., Arnold, W.A. 2020. Assessment of 2,4-dinitroanisole transformation using compound-specific isotope analysis after in situ chemical reduction of iron oxides. Environ. Sci. Technol. 54, 5520-5531. (ChemRxiv version here).

Pati, S.G., Arnold, W.A. 2020. Comprehensive screening of quaternary ammonium surfactants and ionic liquids in wastewater effluents and lake sediments. Environ. Sci.: Processes Impacts. 22(2), 430-441. Open  Access. Associated online data

Lombardo, S.M., Vindedahl, A.M., Arnold, W.A. 2020. Determination of hydroxyl radical production from sulfide oxidation relevant to sulfidic pore-waters. ACS Earth Space Chem. 4(2) 261-271.

Johnson, W.M., Longnecker, K., Kido Soule, M.C., Arnold, W.A., Bhatia, M.P., Hallam, S.J., Van Mooy, B.A.S., Kujawinski, E.B. Metabolite composition of sinking particles differs from surface suspended particles across a latitudinal transect in the South Atlantic. Limnology & Oceanography 65(1), 111-127. (bioRxiv verision available here).



Aly, Y.H., McInnis, D.P., Lombardo, S.M., Arnold, W.A., Pennell, K.D., Hatton, J., Simcik, M.F. 2019 Enhanced Adsoprtion of Perfluoro Alkyl Substances for In situ Remediation. Environ Sci.: Wat. Res. Technol. 5, 1867-1875.

Allman, A., Daoutidis, P., Arnold, W.A., Cussler, E.L. 2019. Efficient Water Pollutant Abatement. Ind. Eng. Chem. Res. 58(50), 22483-22487. Open Access

Chen, Y., Arnold, W.A., Griffin, C., Olmanson, L., Brezonik, P.L., Hozalski, R.M. 2019. Assessment of the Chlorine Demand and Disinfection Byproduct Formation Potential of Surface Waters via Satellite Remote Sensing. Water Res. 165, 115001.

Zhu, K., Arnold, W.A., Novak, P.J. 2019. Modeling alginate encapsulation system for biological hydrogen production. Biotechnol. Bioeng. 116(12), 3189-3199.

Voelz, J., Johnson, N.W., Chun, C., Arnold, W.A., Penn, R.L. Quantitative Dissolution of Environmentally-Accessible Iron Residing in Iron-Rich Minerals: A ReviewACS Earth Space Chem. 3(8), 1371-1392.

O’Connor, M., Helal, S.R., Latch, D.E., Arnold, W.A. 2019 Quantifying Photo-production of Triplet Excited States and Singlet Oxygen from Effluent Organic Matter, Water Res. 156, 23-33

Hora, P.I, Novak, P.J., Arnold, W.A.  2019 Photodegradation of pharmaceutical compounds in partially nitritated wastewater during UV irradiation. Environ Sci.: Wat. Res. Technol. 5, 897-909

Brezonik, P.L, Finlay, J.C., Griffin, C.G., Arnold, W.A., Boardman, E.H., Germolus, N., Hozalski, R.M., Olmanson, L.G. 2019. Iron influence on dissolved color in lakes of the Upper Great Lakes states, PLOS ONE, published Feb 13, 2019.

Brezonik, P.L., Bouchard Jr., R.W., Finlay, J.C., Griffin, CG., Olmanson, L.G, Anderson, J.P., Arnold, W.A., Hozalski, R.M. 2019 Color, chlorophyll a and suspended solids effects on Secchi depth in lakes: implications for trophic state assessment., Ecol Appl. 29(3), 2019, e01871.

Berens, M.J., Ulrich, B.A., Strehlau, J.H., Hofstetter, T.B., Arnold, W.A. 2019. Mineral Identity, Natural Organic Matter, and Repeated Contaminant Exposures do not Affect the Carbon and Nitrogen Isotope Fractionation of 2,4-Dinitroanisole during Abiotic Reduction. Environ. Sci.: Processes Impacts, 21, 51-62.


Strehlau, J.H., Berens, M.J, Arnold, W.A. 2018. Mineralogy and buffer identity effects on RDX kinetics and intermediates during reaction with natural and synthetic magnetite. Chemosphere, 213, 602-609.

Ma, B., Arnold, W.A., Hozalski, R.M. 2018. The Relative Roles of Sorption and Biodegradation in the Removal of Contaminants of Emerging Concern (CECs) in GAC-sand Biofilters, Water Res. 146, 67-76.

Todey, S.A., Fallon, A.M., Arnold, W.A. Neonicotinoid insecticide hydrolysis and photolysis: Rates and residual toxicity. Environ. Toxicol. Chem.  37(11), 2797-2809. Data repository for UMN data set. Open Access.

Zhu, K., Arnold, W.A., Sakkos, J., Davis, C.W., Novak, P.J. 2018. Achieving high-rate hydrogen recovery from wastewater using customizable alginate polymer gel matrices encapsulating biomass. Environ Sci.: Wat. Res. Technol. 4, 1867-1876. Open Access

Novak, P.J., Arnold, W.A., Aksan, A. System and membrane for wastewater-generated energy and gas (US Patent 10035719B2)

Erickson, P.R., Moor, K., Werner, J.J., Latch, D.L., Arnold, W.A., McNeill, K. 2018. Singlet oxygen phosphorescence as a probe for triplet-state dissolved organic matter reactivity. Environ. Sci. Technol. 52 (16), pp 9170–9178. Open Access

Kerrigan, J.F., Sandberg, K.D., Engstrom, D.R., LaPara, T.M., Arnold, W.A. 2018. Small and large-scale distribution of four classes of antibiotics in sediment: Association with metals and antibiotic resistance genes. Environ. Sci.: Processes Impacts, 20, 1167-1179.

Pati, S.G; Arnold, W.A. 2018. Reaction rates and product formation during advance oxidation of ionic liquid cations by UV/peroxide, UV/persulfate, and UV/chlorine. Environ Sci.: Wat. Res. Technol. 4, 1310-1320.

Xiao, F., Hanson, R., Golovko, S., Golovko, M., Arnold, W.A. 2018. PFOA and PFOS Are Generated from Zwitterionic and Cationic Precursor Compounds During Water Disinfection with Chlorine or Ozone. Environ. Sci. Technol. Lett. 5(6) 382-388

Voelz, J., Arnold, W.A., Penn, R.L. 2018. Redox-induced nucleation and growth of goethite on synthetic hematite nanoparticlesAm. Mineral. 103(7), 1021-1029.

Aly, Y.H., Liu, C., McInnis, D., Lyon, B.A., Hatton, J., McCarty, M., Arnold, W.A., Pennell, K.D., Simcik, M.F. 2018. In situ remediation method for enhanced sorptio fo perfluoro-alkyl subtances onto Ottawa sand. J. Envrion. Eng. –ASCE, 144(9), 04018086.

McCabe, A.J., Arnold, W.A. Multiple linear regresion models to predict the formation efficiency of triplet excited states of dissovled organic matter in temperate wetlands. Limnol. Oceanogr. accepted. Data Repository for U of MN data set. Open Access

McAdams, B.C., Aiken, G.R., McKnight, D.M., Arnold, W.A., Chin, Y.-P. 2018 High pressure size exclusion chromatography (HPSEC) determination of dissolved organic matter molecular weight revisited: Accounting for changes in stationary phases, analytical standards, and isolation methods. Environ. Sci. Technol. 52(2), 722-730.

Kerrigan, J.F., Sandberg, K.D., Engstrom, D.R., LaPara, T.M., Arnold, W.A. 2018. Sedimentary record of antibiotic accumulation in Minnesota Lakes. Sci. Total. Env. 621, 970-979. Data Repository for U of MN data set.


Arnold, W.A. 2017. Is the EPA going to protect the environment? Environ. Technol. Lett., 4(12), 511 (editorial).

Pati, S.G, Arnold, W.A. 2017. Photochemical Transformation of Four Ionic Liquid Cation Structures in Aqueous Solution. Environ. Sci. Technol. ASAP. 

McCabe, A.J., Arnold, W.A. 2017. Reactivity of triplet excited states of dissolved natural organic matter in stormflow from mixed-use watersheds. Environ. Sci. Technol. 51(17) 9718-9728. Data Repository for U of MN data set

Halden, R.U., Lindeman, A.E., Aiello, A.E., Andrews, D., Arnold, W.A., Fair, P., Fuoco, R.E., Geer, L.A., Johnson, P.I., Lohmann, R., McNeill, K., Sacks, V.P., Schettler, T., Weber, R., Zoeller, R.T., Blum, A. 2017. The Florence Statement on Triclosan and Triclocarban. Health. Perspect. 125(6), 1-13 (064501).

Wallace, G.C., Sander, M., Chin, Y.P., Arnold, W.A. 2017 Quantifying the electron donating capacities of sulfide and dissolved organic matter in sediment pore waters of wetlands. Environ. Sci.: Processes Impacts, 19, 758-767

Novak, P.J., Arnold, W.A., Surdo, E.M. Membranes for wastewater-generated energy and gas (US Patent 9534236)

Strehlau, J.H.; Schultz, J.D.; Vindedahl, A.M.; Arnold, W.A.; Penn, R.L. Effect of nonreactive kaolinite on 4-chloronitrobenzene reduction by Fe(II) in goethite-kaolinite heterogeneous suspensions. Environ. Sci.: Nano.  2017, 4, 325-334.

Strehlau, J.H.; Toner, B.M.; Arnold, W.A.; Penn, R.L. 2017. Accessible reactive surface area and abiotic redox reactivity of iron oxyhydroxides in acidic brines. Geochim. Cosmochim. Acta, 197, 345-355.

Arnold, W.A.; Oueis, Y.; O’Connor, M.; Rinaman, J.E.; Taggart, M.; McCarthy, R.; Foster, K.; Latch, D.E. 2017. QSARs for Phenols and Phenolates: Oxidation Potential as a Predictor of Reaction Rate with Photochemically Produced Oxidants. Environ. Sci.: Processes Impacts, 2017, 19, 324 – 338.


Adams, R.M.; McAdams, B.C.; Arnold, W.A.; Chin, Y.P. 2016. Transformation of chlorpyrifos and chlorpyrifos-methyl in prairie pothole pore waters. Environ. Sci.: Processes Impacts, 18, 1406-1416.

Strehlau, J.H.; Stemig, M.S.; Penn, R.L.; Arnold, W.A. 2016. Facet-Dependent Oxidative Goethite Growth As a Function of Aqueous Solution Conditions. Envion. Sci. Technol. 50(19),  10406–10412.

Prieto, A.L.; Sigtermans, L.H.; Mutlu, B.R.; Aksan, A.; Arnold, W.A; Novak, P.J. 2016. Performance of a composite bioactive membrane for H2production and capture from high strength wastewater. Environ. Sci.: Wat. Res. Technol. 2, 848 – 857

McCabe, A.J.; Arnold, W.A. 2016. Seasonal and spatial variabilities in the water chemistry of prairie pothole wetlands influence the photoproduction of reactive intermediates. Chemosphere, 155, 640-647. Data Repository for U of MN data set

Vindedahl, A.M.; Strehlau, J.H.; Arnold, W.A.; Penn, R.L.2016. Organic Matter and Iron Oxide Nanoparticles: Aggregation, Interactions, and Reactivity. Environ. Sci.: Nano. 3, 494-505.

Erickson, A.J.; Gilliver, J.S.; Arnold, W.A.; Brekke, C.; Bredal, M. 2016. Abiotic Capture of Stormwater Nitrates with Granular Activated Carbon. Environ. Eng. Sci. 33(5) 354-363.

McAdams, B.; Adams, R.; Arnold, W.A., Chin, Y.-P. 2016. Novel insights into the distribution of reduced sulfur species in prairie pothole wetland pore waters provided by bismuth film electrodes (BiFEs). Environ. Sci. Technol. Lett. 3, 104-109.

Fairbairn, D.; Karpuzcu, M.E.; Arnold, W.A.; Barber, B.L.; Kaufenberg, E.; Koskinen, W.C.; Novak, P.J.; Rice, P.J.; Swackhamer, D.L . 2016. Sources and transport of contaminants of emerging concern: A two-year study of occurrence and spatiotemporal variation in a mixed land use watershed. Sci. Total Environ., 551-2, 605-613.

Vindedahl, A.M.; Stemig, M.S.; Arnold, W.A.; Penn, R.L. 2016. Character of humic substances as a predictor for goethite nanoparticle reactivity and aggregation. Environ. Sci. Technol. 50(3) 1200-1208.

Karpuzcu, M.E.; McCabe, A.J.; Arnold, W.A. 2016. Photransformation of pesticides in prairie potholes: Effect of dissolved organic matter in triplet-induced oxidation. Environ. Sci.: Processes Impacts, 18, 237-245.

Fairbairn, D.; Arnold, W.A.; Barber, B.L.; Kaufenberg, E.; Koskinen, W.C.; Novak, P.J.; Rice, P.J.; Swackhamer, D.L . 2016. Contaminants of emerging concern: Mass balance and comparison of wastewater effluent and upstream sources in a mixed-use watershed. Environ. Sci. Technol. 50 (1), 36–45.


Novak, P.J.; Arnold, W.A; Henningsgaard, B.; Hozalski, R.M.; Kessler, K.; LaPara, T.M.; Parrelaa, A.; Rogacki, L.; Thompson, C.; Thorson, R.; Zimmerman, R.A; Bott, C.B.; Diagger, G.T.; Neethling, J.B. Innovation Promoted by Regulatory Flexibility. Environ. Sci. Technol., 49 (24),13908–13909. (Viewpoint)

Arnold, W.A. , 2015. Rising and Falling Waters (and Land), Environmental Science and Technology Letters, 2 (9), pp 233–233 (editorial).

Kerrigan, J.F. ; Engrstrom, D.R.; Yee, D.; Sueper, C. Erickson, P.R. Grandbois, M.; McNeill, K.; Arnold, W.A. 2015. Quantification of Hydroxylated Polybrominated Diphenyl Ethers (OH-BDEs), Triclosan, and Related Compounds in Freshwater and Coastal Systems. PLOS ONE, published 10-14-2015.

Vindedahl, A.M, Arnold, W.A., Penn, R.L.  Impact of Pahokee Peat Humic Acid and Buffer Identity on Goethite Aggregation and Reactivity Environ. Sci.: Nano, 2, 509-517.

Tan, D.T.; Arnold, W.A.; Novak. P.J., 2015. Effects of estrone and organic carbon exposure on the transformation of estrone. Environ. Sci.: Wat. Res. Technol., 1, 457-464.

Hensley, R.N.; Kerrigan, J.F.; Pang, H.; Erickson, P.G.; Grandbois, M.; McNeill, K.; Arnold, W.A., 2015. Triclosan, chlorinated triclosan derivatives, and hydroxylated polybrominated diphenylethers (OH-BDEs) in wastewater effluents. Environ. Sci.: Wat. Res. Technol. 1, 316-325. (Named a Top Paper of 2015)

Liu, Y.; Thornton, D.C.O.; Yvon-Lewis, S.A.; Bianchi, T.S., Arnold, W.A.; Shields, M.R.; Chen, J. Marine dissolved organic matter composition drives the production of brominated very short-lived substances. Environ. Sci. Technol., 49(6), 3366-3374.

Tan, D.T.; Temme, H. ; Arnold, W.A.; Novak, P.J. 2015. Estrone degradation: Does organic matter (quality), matter?. Environ. Sci. Technol., 49(1), 498-503.

Fairbairn, D.; Karpuzcu, M.E. Arnold, W.A.; Barber, B.L.; Kaufenberg, E.; Koskinen, W.C.; Novak, P.J.; Rice, P.J.; Swackhamer, D.L . 2015. Sediment-Water Distribution of Contaminants of Emerging Concern in a Mixed Use Watershed. Sci. Total Environ., 505, 896-904.

Kelly, M.M.; Rearick, D.C.; Overgaard, C.; Schoenfuss, H.L.; Arnold, W.A. 2015. Sorption of isoflavones to river sediment and model sorbents and outcomes for larval fish exposed to contaminated sediment. J. Haz. Mater. 282, 26-33. Special issue on Emerging Contaminants



Arnold, W.A.; Longnecker, K.; Kroeger, K.D.; Kujawinski, E.B. 2014. Molecular signature of organic nitrogen in septic-impacted groundwater. Environ. Sci.: Processes Impacts, 16(10), 2400 – 2407.

Karpuzcu, M.E.; Fairbairn, D.; Arnold, W.A.; Barber, B.L.; Kaufenberg, E.; Koskinen, W.C.; Novak, P.J.; Rice, P.J.; Swackhamer, D.L. 2014. Identifying sources of emerging organic contaminants ina mixed use watershed using principal components analysis. Environ. Sci.: Processes Impacts, 16, 2390-2399.

Stemig, A.M.; Do, T.A.; Yuwono, V.M.; Arnold, W.A.; Penn, R.L. 2014. Goethite Nanoparticle Aggregation: Effects of Buffers, Metal Ions, and 4-Chloronitrobenzene Reduction. Environ. Sci.: Nano, 1, 478-487.

Zeng, T.McCabe, A.J.; Frank, T.C. ; Carpenter, J.K. ; Arnold, W.A.; Cussler, E.L. 2014. Membrane-assisted VOC removal from aqueous acrylic latex is faster than from aqueous solutions. Ind. Eng. Chem. Res., 53(31), 12420-12427.

Sleighter, R.L. ; Chin, Y.-P.; Arnold, W.A.; Hatcher, P.G.; McCabe, A.J.; McAdams, B.C.; Wallace, G.C. 2014. Evidence for abiotic S and N incorporation into prairie wetland dissolved organic matter. Environ. Sci. Technol. Lett., 1(9), 345-350.

Zeng T.; Arnold, W.A. 2014. Clustering chlorine reactivity of haloacetic acid precursors in inland lakes. Environ. Sci. Technol. 48(1), 139-148.

Rearick, D.C.; Fleischacker, N.T.; Kelly, M.M.; Arnold, W.A.; Novak, P.J. ; Schoenfuss, H.L. 2014. Phytoestrogens in the environment: I. Occurrence and exposure effects on fathead minnows. Environ. Toxicol. Chem., 33(3), 553-559.

Kelly, M.M.; Fleischacker, N.T.; Rearick, D.C.; Arnold, W.A.; Schoenfuss, H.L.; Novak, P.J. 2014. Phytoestrogens in the environment: II. Microbiological degradation of phytoestrogens and the response of fathead minnows to degradate exposure. Environ. Toxicol. Chem., 33(3), 560-566.

Arnold, W.A. 2014. One electron oxidation potential as a predictor of rate constants of N-containing compounds with carbonate radical and triplet excited state organic matter. Environ. Sci.: Processes Impacts, 16(4), 832-838.


Tan, D.T.; Arnold, W.A.; Novak, P.J.. 2013. Impact of organic carbon on the biodegradation of estrone in mixed culture systems. Environ. Sci. Technol., 47 (21), pp 12359–12365.

Ziegelgruber, K.L.; Zeng, T.; Arnold, W.A.; Chin, Y.-P. 2013. Sources and composition of sediment pore water dissolved organic matter in prairie pothole lakes. Limnology and Oceanography, , 58(3), 2013, 1136–1146.

Vikesland, P.J.; Fiss, E.M.; Wigginton, K.R.; McNeill, K.; Arnold, W.A. Halogenation of bisphenol-A, triclosan, and phenols in chlorinated waters containing iodide. Environmental Science and Technology, 47 (13), pp 6764–6772.

Anger, C.T.; Sueper, C.; Blumentritt, D.J.; McNeill, K.; Engstrom, D.R.; Arnold, W.A. 2013. Quantification of triclosan, chlorinated triclosan derivatives, and their dioxin photoproducts in lacustrine sediment cores. Environmental Science and Technology, 47, 1833–1843. . Listed as a Most Read Article, March 2013.  And Q1


Zeng, T.; Arnold, W.A., Toner, B.M. 2013. Microscale Characterization of Sulfur Speciation in Lake Sediments. Environmental Science and Technology,47(3) 1287-1296..

Kleigman, S.; Eustis, S.; Arnold, W.A.; McNeill, K. 2013. Experimental and theoretical insights into the involvement of radicals in triclosan phototransformation. Environmental Science and Technology, 47 (13), pp 6756–6763.

Zeng, T.; Arnold, W.A. 2013. Pesticide photolysis in prairie potholes: probing photosensitized processes. Environmental Science and Technology, 47 (13), pp 6735–6745.

Wammer, K.; Korte, A.R.; Lundeen, R.A.; Sundberg, J.E.; McNeill, K.; Arnold, W.A. 2013. Direct photochemistry of three fluoroquinolone antibacterials: norfloxacin, ofloxacin, and enrofloxacin. Water Research, 47(1) 439-448..


Erickson, P.R.; Grandbois, M.; Arnold, W.A.; McNeill, K., 2012. Photochemcial formation of brominated dioxins and other products of concern from hydroxylated polybrominated diphenyl ehters (OH-PBDEs). Environmental Science and Technology, 46 (15), pp 8174–8180

Brezonik, P.L.; Arnold. W.A., 2012. Water Chemistry: Fifty Years of Change and Progress. Environmental Science and Technology, 46, 5650-5657. Peer reviewed Feature Article.

Kelly, M.M.; Arnold, W.A., 2012. Direct and Indirect Photolysis of the Phytoestrogens Genistein and Daidzein. Environmental Science and Technology, 46, 5396-5403.

Zeng, T.; Chin, Y.-P.; Arnold, W.A. 2012. Potential for abiotic reduction of pesticides in prairie pothole porewaters. Environ. Sci. Technol. 46, 3177-3187.

Page, S.E.; Sander, M.; Arnold, W.A.; McNeill, K. 2012. Hydroxyl radical formation upon oxidation of reduced humic acids by oxygen in the dark. Environ. Sci. Technol. 46,  1590-1597.


Zeng, T.; Ziegelgruber, K.L.; Chin, Y.-P.; Arnold, W.A. 2011. Pesticide processing potential in prairie pothole porewaters. Environ. Sci. Technol. 45, 6814-6822.

Buth, J.M.; Ross, M.R.; McNeill, K.; Arnold, W.A. 2011. Removal and Formation of Chlorinated Triclosan Derivatives in Wastewater Treatment Plants using Chlorine and UV Disinfection. Chemosphere. 84(9), 1238-1243. Reprinted in 85(2) 284-289.

Novak, P.J.; Arnold, W.A.; Blazer, V.S.; Halden, R.U.; Klaper, R.D.; Kolpin, D.W.; Kriebel, D.; Love, N.G.; Martinovic-Weigelt, D.; Patisaul, H.B.; Snyder, S.A.; vom Saal, F.S.; Weisbrod, A.V.; Swackhamer, D.S. 2011. On the Need for a National (US) Research Program to Elucidate the Potential Risks to Human Health and the Environment Posed by Contaminants of Emerging Concern. Environmental Science and Technology, 45(9) 3829-30

Skarpeli-Liati, M.; Jiskra, M.; Garr, A.N.; Turgeon, A.; Arnold, W. A.; Cramer, C.J.; Schwarzenbach, R.P; Hofstetter, T.B. 2011. Using Nitrogen Isotope Fractionation to Assess the Oxidation of Substituted Anilines by Manganese Oxide. Environ. Sci. Technol. 45(13) 5596-5604.

Moore, K.; Forsberg, B.; Baer, D.R.; Arnold, W.A.; Penn, R.L. 2011. Zero Valent Iron:  Impact of Anions Present During Synthesis on Subsequent Nanoparticle Reactivity. J. Environ. Eng.-ASCE, accepted.

Page, S.E.; Arnold, W.A.; McNeill, K. 2011. Assessing the contribution of free hydroxyl radical in organic matter-sensitized photo-hydroxylation reactions. Environ. Sci. Technol.45(11) 2818-2825..

Surdo, E.M.;  Kahn, I.A.; Choudhury, A.A.; Saleh, N.B.; Arnold, W.A. 2011. Barrier properties of poly(vinyl alcohol) membranes containing carbon nanotubes or activated carbon. J. Haz. Mater. 188(1-3), 334-340.

Skarpeli-Liati, M.; Turgeon, A.; Garr, A.N.; Arnold, W.A.; Cramer, C.J.; Hofstetter, T.B. 2011. pH Dependent Equilibrium Isotope Fractionation Associated with the Compound Specific Nitrogen and Carbon Isotope Analysis of Substituted Anilines by SPME-GC-IRMS. Anal. Chem. 83(5) 1641-1648.

Ryan, C.R.; Tan, D.T.; Arnold, W.A. 2011. Direct and Indirect Photolysis of Sulfamethoxazole and Trimethoprim in Wastewater Treatment Plant Effluent. Water Res., 45, 1280-1286.


Cwierty, D.M.; Arnold, W. A.; Kohn, T.; Rodenburg, L.A; Roberts, A.L.. 2010. Reactivity of Alkyl Polyhalides toward Granular Iron: Development of QSARs and Reactivity Cross Correlations for Reductive Dehalogenation. Environ. Sci. Technol., available online.

Page, S.E.; Arnold, W.A.; McNeill, K. 2010. Terephhthalate as a probe for photochemically generated hydroxyl radical. J. Environ. Monit. in press

von Gunten, U.; Sahli, E.; Schmidt, C.K.; Arnold, W.A. 2010. Kinetics and Mechanisms of N-Nitrosodimethylamine (NDMA) formation upon Ozonation of N,N-Dimethylsulfamide-containing waters: Bromide catalysis. Environ. Sci. Technol., in press.

Buth, J.M; Steen, P.O.; Sueper, C.; Blumentritt, D.; Vikesland, P.J.; Arnold, W.A; McNeill, K. 2010. Record of Dioxin Photoproducts of Triclosan and its Chlorinated Derivatives in Riverine Sediment Cores. Environ. Sci. Technol., 44(12), pp 4545–4551

Arnold, W.A.; Hozalski, R.M.; Pearson, C.R.; Moore, K. 2010. Tribromoacetic acid reduction in reactors simulating distribution system pipes. J. Am. Water Works Assoc., 102(3), 99-106..

Henjum, M.B.; Hozalski, R.M.; Wennen, C.R.; Arnold, W.A.; Novak, P.J. 2010. Correlations between in situ sensor measurements and trace organic pollutants in urban streams. J. Environ. Monit., 12, 225-233.

Henjum, M.B.; Hozalski, R.M.; Wennen, C.R.; Novak, P.J.; Arnold, W.A. 2010. A Comparison of Total Maximum Daily Load (TMDL) Calculations In Urban Streams Using Near Real-Time and Periodic Sampling Data.J. Environ. Monit., 12, 234-241.



Buth, J.M., Grandbois, M., Vikesland, P.J.*, McNeill, K.*, Arnold, W.A. 2009. Aquatic photochemistry of chlorinated triclosan derivatives: potential source of polychlorodibenzo-p-dioxins. Environ. Toxicol. Chem., 28(12) 2555-2563

Werner, J.J.; McNeill, K.; Arnold, W.A. 2009. Photolysis of chlortetracycline on a clay surface. J. Agric. Food Chem., 57, 6932-6937.

Surdo, E.M.; Cussler, E.L.; Novak, P.J.; Arnold, W.A. 2009. Geomembranes containing powdered activated carbon have the potential to improve containment of chlorinated aromatic contaminants. Environ. Sci. Technol.,

Steen, P.O.; Grandbois, M., McNeill, K.; Arnold, W.A. 2009. Photochemical formation of halogenated dioxins from hydroxylated polybrominated diphenyl ethers (OH-PBDEs) and chlorinated derivatives (OH-PBCDEs). Environ. Sci. Technol., 43, 4405-4411.

Surdo, E.M., Cussler, E.L., Arnold, W.A. 2009. Sorptive and reactive scavenger-containing sandwich membranes as contaminant barriers. J. Environ. Eng.-ASCE, 135, 69-76.


Hartenbach, A., Hofstetter, T.B., Aeschbacher, M., Sander, M., Kim, D., Strathmann, T.J., Arnold, W.A., Cramer, C.J.; Schwarzenbach, R.P. 2008. Variability of N isotope fractionation during the reduction of nitroaromatic compounds with dissolved reductants, Environ. Sci. Technol., 42, 8352–8359.

Arnold, W.A., Bolotin, J., von Gunten, U., Hofstetter, T.B. 2008. Evaluation of functional groups responsible for chloroform formation during water chlorination using compound specific isotope analysis, Environmental Science and Technology, 42, 7778–7785 Stable Isotopes theme issue.

Lee, J.-y., Pearson, C.R., Hozalski, R.M. , Arnold, W.A. 2008. Degradation of trichloronitromethane by iron water main corrosion products. Water Research, 42(8-9), pp. 2043-2050.

Hofstetter, T.B. , Neumann, A., Arnold, W.A.. Bolotin, J., Hartenbach, A., Cramer, C.J.; Schwarzenbach, R.P. 2008. Substituent effects on nitrogen isotope fractionation during abiotic reduction of nitroaromatic compounds, Environmental Science and Technology, 42(6), pp. 1997-2003.


Buth, J.M., Arnold, W.A., McNeill, K. 2007. Unexpected  Products and Reaction Mechanisms of the Aqueous Chlorination of  Cimetidine Environmental Science and Technology, 41(17), pp. 6228-6233.

Werner, J.J., Chintapalli, M., Lundeen, R.A., Wammer, K.H., Arnold, W.A., McNeill, K., 2007. Environmental photochemistry of tylosin: efficient, reversible photoisomerization to a less-active isomer, followed by photolysis. Journal of Agricultural and Food Chemistry, 55(17) pp. 7062-7068.

Chun, C.L., Hozalski, R.M.; Arnold, W.A., 2007. Degradation of disinfection byproducts by carbonate green rust. Environmental Science and Technology, 41(5), pp. 1615-1621.

Shimotori, T.;  Cussler, E. L. and Arnold, W. A., 2007. Diffusion of Mobile Products in Reactive Barrier Membranes. Journal of Membrane Science, 291(1-2), pp. 111-119.

Lee, J.-y.; Hozalski, R.M.; Arnold, W.A., 2007. Effects of dissolved oxygen and iron aging on the reduction of trichloronitromethane, trichloroacetonitrile, and trichloropropanone, Chemosphere, 66(11), pp. 2127-2135.

DeJournett, T.D; Arnold, W.A.; LaPara, T.M., 2007. The Characterization and Quantification of the Methanotrophic Bacterial Populations in Constructed Wetland Sediments using PCR Targeting 16S rRNA Gene Fragments, Applied
Soil Ecology
,  35(3), pp. 648-659.


Edhlund, B.L.; Arnold, W.A.; McNeill, K., 2006. Aquatic
photochemistry of nitrofuran antibiotics
, Environmental Science
and Technology
, 40(17), pp. 5422-5427.

Werner, J.J.; Arnold, W.A.; McNeill, K., 2006. Water
hardness as a photochemical parameter: tetracycline photolysis as a function
of calcium concentration, magnesium concentration, and pH
, Environmental
Science and Technology
, 40(23), pp. 7236-7241. in Emerging Contaminants Special

Kohn, T.; Arnold, W.A.; Roberts, A.L., 2006. Reactivity
of substituted benzotrichlorides toward granular iron, Cr(II) and an iron(II)
Porphyrin: a correlation analysis
, Environmental Science and Technology,
40(13), 4253-4260.

Chun, C.L.; Penn, R.L.; and Arnold, W.A., 2006. Kinetic
and microscopic studies of reductive transformations of organic contaminants
on goethite
.Environmental Science and Technology, 40(10), 3299-3304.

Wammer, K.H.; LaPara, T.M.; McNeill, K.; Arnold, W.A.; Swackhamer, D.L.,
2006. Changes in Antibacterial Activity of Triclosan and Sulfa Drugs due
to Photochemical Transformations, Environmental Toxicology and Chemistry,
25(6), 1480-1486 (Link
to journal

Shimotori, T.;  Cussler, E. L. and Arnold, W. A., 2006. High-Density
Polyethylene Membrane Containing Fe(0) as a Contaminant Barrier
. Journal
of Environmental Engineering-ASCE
, 132(7), 803-809.


Warta, A.M., Arnold, W. A. and Cussler, E. L. 2005. Permeable
Membranes Containing Crystalline Silicotitanate As Model Barriers For Cesium
. Environmental Science and Technology, 39(24) 9738-9743.

Chun, C.L., Hozalski, R.M.; Arnold, W.A., 2005. Degradation
of drinking water disinfection byproducts in the presence of synthetic
goethite and magnetite
. Environmental Science and Technology,
39(21), 8525 -8532.

Pearson, C.R.; Hozalski, R.M.; Arnold, W.A., 2005. Degradation of chloropicrin
in the presence of Fe(0). , Environmental Toxicology and Chemistry,
v. 24(12), 3037-3042. (Link
to journal

Boreen, A.L.; Arnold, W.A.; McNeill, K., 2005. Triplet-sensitized
photodegradation of sulfa drugs containing six-memebered heterocyclic groups:
identification of an SO2 extrusion photoproduct
, Environmental
Science and Technology
, v. 39(10), pp. 3630-3638.

DeJournett, T.D.; Fritsch, J.M.; McNeill, K.; Arnold, W.A., 2005. Preparation
of 14C2-cis-1,2-dichloroethylene from 14C2-trichloroethylene
using a cobalt porphyrin catalyst
. Journal of Labelled Compounds
and Radiopharmaceuticals
, v. 48(5), pp. 353-357.

Werner, J. J.; McNeill, K.; Arnold, W.A., 2005. Environmental
photodegradation of mefenamic acid,
Chemosphere, v. 58(10),
pp. 1339-1346.

Latch, D. E.; Packer, J. L.; Stender, B. L.; VanOverbeke, J; Arnold,
W.A., McNeill, K., 2005. Aqueous photochemistry of triclosan: Formation
of 2,4-dichlorophenol, 2,8-dichlorodibenzo-p-dioxin and oligomerization
products, Environmental Toxicology and Chemistry,  v.24(3),
pp. 517-525 . (Link
to journal


Zhang, L.; Arnold, W. A.; Hozalski, R.M, 2004. Kinetics
of Haloacetic Acid Reactions with Fe(0)
, Environmental Science and
, v. 38(24), pp. 6881 – 6889.

Boreen, A.L.; Arnold, W.A.; K. McNeill, 2004. Photochemical
Fate of Sulfa Drugs in the Aquatic Environment: Sulfa Drugs Containing
Five-Membered Heterocyclic Groups
. Environmental Science and Technology,
v. 38(10), pp. 3933-3940. .

Shimotori, T.; Nuxoll, E.E.; Cussler, E.L.; Arnold,
W.A., 2004. A polymer membrane
containing Fe(0) as a contaminant barrier
.Environmental Science
and Technology,
38(7),  pp. 2264 – 2270.


Packer, J.L.; Werner, J.J.; Latch, D.E.; McNeill,
K.; Arnold, W.A., 2003. Photochemical
fate of pharmaceuticals in the environment: naproxen, diclofenac, clofibric
acid, and ibuprofen
, Aquatic Sciences, v. 65(4), pp.
342-351. (Alternate

Boreen, A.L.; Arnold, W.A.; McNeill, K., 2003. Photodegradation
of pharmaceuticals in the aquatic environment: A review
, Aquatic
v. 65(4), pp. 320-341. (Alternate

Wang, S. and Arnold, W.A., 2003. Abiotic reduction
of dinitroanline herbicides. Water Research, v. 37(17), pp.
to journal

Latch, D.E.; Stender, B.L.; Packer, J.L.; Arnold,
W.A.; McNeill, K., 2003. Photochemical
fate of pharmaceuticals in the environment: cimetidine and ranitidine
, Environmental
Science and Technology
, v. 37(15),
pp. 3342-3350..

Latch, D.E.; Packer, J.L.; Arnold, W.A.*; McNeill, K.*, 2003. Photochemical
conversion of triclosan to 2,8-dichlorodibenzo-p-dioxin in aqueous
solution. Journal of Photochemistry and Photobiology A: Chemistry,
v. 158(1), pp. 63-66. (Link
to journal

Shimotori, T., Arnold, W.A., 2003. Measurement
and estimation of Henry’s law constants of chlorinated ethylenes in aqueous
surfactant solutions.
Journal of Chemical and Engineering Data,
v.48(2), pp. 253-261.


Arnold, W.A., Winget, P., and Cramer, C.J. 2002. Reductive
dechlorination of 1,1,2,2-tetrachloroethane.
Science and Technology
,  v. 36(16), pp. 3536-3541 .

Shimotori, T., Arnold, W.A. 2002. Henry’s
law constants of chlorinated ethylenes in aqueous alcohol solutions: measurement,
estimation, and thermodynamic analysis.
Journal of Chemical
and Engineering   Data
,  v. 47(2), pp. 183-190


Hozalski, R.M; Zhang, L.; Arnold, W. A., 2001. Reduction
of haloacetic acids by Fe0: implications for treatment and fate.
Science and Technology
,  v. 35(11), pp. 2258-2263.

Arnold, W. A.; A. L. Roberts, 2000. Inter- and
intraspecies competitive effects in reactions of chlorinated ethylenes
with zero-valent iron in column reactors. Environmental Engineering
, v. 17(5), pp. 291-302.

Arnold, W. A.; A. L. Roberts, 2000. Pathways
and kinetics of chlorinated ethylene and chlorinated acetylene reaction
with Fe(0) particles.
Environmental Science and Technology,
v. 34(9), pp. 1794-1805.

Arnold, W. A.; Ball, W.P; A. L. Roberts, 1999.
Polychlorinated ethane reaction with zero-valent zinc: pathways and rate
control. Journal of Contaminant Hydrology, v. 40(2), pp.
183-200. (Link
to journal

Arnold, W. A.; A. L. Roberts, 1998. Pathways
of chlorinated ethylene and chlorinated acetylene reaction with Zn(0)
. Environmental
Science and Technology
,  v. 32, pp. 3017-3025.

Roberts, A. L.; Totten, L. A.; Arnold, W. A.;
Burris, D. R.; T. J. Campbell, 1996. Reductive
elimination of chlorinated ethenes by zero-valent metals
. Environmental
Science and Technology
,  v. 30, pp. 2654-2659.

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