WILLIAM P JOHNSON

Curriculum Vitae

WILLIAM P JOHNSON portrait
  • Adjunct Professor, Civil And Environmental Engin
  • Professor, Geology & Geophysics

Publications

Publications

  • Rasmuson A, Pazmino E, Assemi S & Johnson WP (2017). Contribution of Nano- to Microscale Roughness to Heterogeneity: Closing the Gap between Unfavorable and Favorable Colloid Attachment Conditions. Environmental science & technology. Vol. 51, 2151-2160. Published, 01/01/2017.
  • VanDerslice, James, Taddie, Marissa, Malecki, Kristen, Gregg, Josh, Faust, Nicholas, Johnson, William P. & Frederick, Logan (2016). Contrasting regional and national mechanisms for predicting elevated arsenic in private wells across the United States using classification and regression trees. Elsevier BV. Vol. 91, 295-304. Published, 2016.
  • Frederick L, VanDerslice J, Taddie M, Malecki K, Gregg J, Faust N & Johnson WP (2016). Contrasting regional and national mechanisms for predicting elevated arsenic in private wells across the United States using classification and regression trees. Water research. Vol. 91, 295-304. Published, 02/01/2016.
  • Johnson, William P., Swanson, Neil, Black, Brooks, Rudd, Abigail, Carling, Greg, Fernandez, Diego P., Luft, John, Van Leeuwen, Jim & Marvin-DiPasquale, Mark (2015). Total- and methyl-mercury concentrations and methylation rates across the freshwater to hypersaline continuum of the Great Salt Lake, Utah, USA. Elsevier BV. Vol. 511, 489-500. Published, 2015.
  • Johnson, William P., Frederick, Logan E., Millington, Mallory R., Vala, David, Reese, Barbara K., Freedman, Dina R., Stenten, Christina J., Trauscht, Jacob S., Tingey, Christopher E., Kip Solomon, D., Fernandez, Diego P. & Bowen, Gabriel J. (2015). Potential impacts to perennial springs from tar sand mining, processing, and disposal on the Tavaputs Plateau, Utah, USA. Elsevier BV. Vol. 532, 20-30. Published, 2015.
  • Molnar, Ian L., Johnson, William P., Gerhard, Jason I., Willson, Clinton S. & O'Carroll, Denis M. (2015). Predicting colloid transport through saturated porous media: A critical review. Wiley-Blackwell. n/a-n/a. Published, 2015.
  • Trauscht, Jacob, Pazmino, Eddy & Johnson, William P. (2015). Prediction of Nanoparticle and Colloid Attachment on Unfavorable Mineral Surfaces Using Representative Discrete Heterogeneity. American Chemical Society (ACS). Vol. 31(34), 9366-9378. Published, 2015.
  • Tasci, Tonguc, Johnson, William, Fernandez, Diego, Manangon, Eliana & Gale, Bruce (2015). Particle Based Modeling of Electrical Field Flow Fractionation Systems. MDPI AG. Vol. 2(4), 594-610. Published, 2015.
  • Trauscht J, Pazmino E & Johnson WP (2015). Prediction of Nanoparticle and Colloid Attachment on Unfavorable Mineral Surfaces Using Representative Discrete Heterogeneity. Langmuir : the ACS journal of surfaces and colloids. Vol. 31, 9366-78. Published, 09/01/2015.
  • Johnson WP, Frederick LE, Millington MR, Vala D, Reese BK, Freedman DR, Stenten CJ, Trauscht JS, Tingey CE, Kip Solomon D, Fernandez DP & Bowen GJ (2015). Potential impacts to perennial springs from tar sand mining, processing, and disposal on the Tavaputs Plateau, Utah, USA. The Science of the total environment. Vol. 532, 20-30. Published, 08/01/2015.
  • For published articles please see my Google Scholar account https://scholar.google.com/citations?user=Cq9_DJIAAAAJ&hl=en For articles in review/in press please see my C.V. In progress, 02/16/2015.
  • Johnson WP, Swanson N, Black B, Rudd A, Carling G, Fernandez DP, Luft J, Van Leeuwen J & Marvin-DiPasquale M (2015). Total- and methyl-mercury concentrations and methylation rates across the freshwater to hypersaline continuum of the Great Salt Lake, Utah, USA. The Science of the total environment. Vol. 511, 489-500. Published, 02/01/2015.
  • Johnson, William P., Pazmino, Eddy & Trauscht, Jacob (2014). Release of Colloids from Primary Minimum Contact under Unfavorable Conditions by Perturbations in Ionic Strength and Flow Rate. American Chemical Society (ACS). Vol. 48(16), 9227-9235. Published, 2014.
  • Dame, Brittany, Johnson, William P., Pazmino, Eddy & Trauscht, Jacob (2014). Power Law Size-Distributed Heterogeneity Explains Colloid Retention on Soda Lime Glass in the Presence of Energy Barriers. American Chemical Society (ACS). Vol. 30(19), 5412-5421. Published, 2014.
  • Petersen, Kevin E., Manangon, Eliana, Hood, Joshua L., Wickline, Samuel A., Fernandez, Diego P., Johnson, William P. & Gale, Bruce K. (2014). A review of exosome separation techniques and characterization of B16-F10 mouse melanoma exosomes with AF4-UV-MALS-DLS-TEM. Springer Science + Business Media. Vol. 406(30), 7855-7866. Published, 2014.
  • Fernandez, Diego. P., Gale, Bruce. K., Johnson, William. P., Manangon, Eliana. & Tasci, Tonguc O. (2014). Circuit modification in electrical field flow fractionation systems generating higher resolution separation of nanoparticles. Elsevier BV. Vol. 1365, 164-172. Published, 2014.
  • Petersen KE, Manangon E, Hood JL, Wickline SA, Fernandez DP, Johnson WP & Gale BK (2014). A review of exosome separation techniques and characterization of B16-F10 mouse melanoma exosomes with AF4-UV-MALS-DLS-TEM. Analytical and bioanalytical chemistry. Vol. 406, 7855-66. Published, 11/01/2014.
  • Tasci TO, Johnson WP, Fernandez DP, Manangon E & Gale BK (2014). Circuit modification in electrical field flow fractionation systems generating higher resolution separation of nanoparticles. Journal of chromatography. A. Vol. 1365, 164-72. Published, 10/01/2014.
  • Pazmino E, Trauscht J & Johnson WP (2014). Release of colloids from primary minimum contact under unfavorable conditions by perturbations in ionic strength and flow rate. Environmental science & technology. Vol. 48, 9227-35. Published, 08/01/2014.
  • Pazmino E, Trauscht J, Dame B & Johnson WP (2014). Power law size-distributed heterogeneity explains colloid retention on soda lime glass in the presence of energy barriers. Langmuir : the ACS journal of surfaces and colloids. Vol. 30, 5412-21. Published, 05/01/2014.
  • Ma H, Hradisky M & Johnson WP (2014). Extending applicability of correlation equations to predict colloidal retention in porous media at low fluid velocity. Environmental science & technology. Vol. 47, 2272-8. Published, 02/01/2014.
  • Tasci TO, Johnson WP, Fernandez DP, Manangon E & Gale BK (2013). Biased cyclical electrical field flow fractionation for separation of sub 50 nm particles. Analytical chemistry. Vol. 85, 11225-32. Published, 12/01/2013.
  • Hilpert, Markus & Johnson, William P. (2013). Upscaling colloid transport and retention under unfavorable conditions: Linking mass transfer to pore and grain topology: UPSCALING COLLOIDS. Wiley-Blackwell. Vol. 49(9), 5328-5341. Published, 2013.
  • Carling, Gregory T., Miller, Theron, Johnson, William P., Pazmino, Eddy, Hoven, Heidi, Rudd, Abigail, Richards, David C. & Fernandez, Diego P. (2013). Relationships of surface water, pore water, and sediment chemistry in wetlands adjacent to Great Salt Lake, Utah, and potential impacts on plant community health. Elsevier BV. Vol. 443, 798-811. Published, 2013.
  • Gale, B. K., Tasci, T. O., Johnson, W. P., Manangon, E. & Fernandez, D. P. (2013). Separation of Magnetic Nanoparticles by Cyclical Electrical Field Flow Fractionation. Institute of Electrical & Electronics Engineers (IEEE). Vol. 49(1), 331-335. Published, 2013.
  • Hradisky, Michal, Johnson, William P. & Ma, Huilian (2013). Response to Comment on “Extending Applicability of Correlation Equations to Predict Colloidal Retention in Porous Media at Low Fluid Velocity”. American Chemical Society (ACS). Vol. 47(14), 8080-8081. Published, 2013.
  • Hradisky, Michal, Johnson, William P. & Ma, Huilian (2013). Extending Applicability of Correlation Equations to Predict Colloidal Retention in Porous Media at Low Fluid Velocity. American Chemical Society (ACS). Vol. 47(5), 2272-2278. Published, 2013.
  • Carling, Gregory T., Diaz, Ximena, Fernandez, Diego P., Gale, Bruce K., Johnson, William P., Merugu, Srinivas, Nasimba, Luis, Pazmino, Eddy, Perez, Lester, Ponce, Marlon & Rudd, Abigail (2013). Particulate and Dissolved Trace Element Concentrations in Three Southern Ecuador Rivers Impacted by Artisanal Gold Mining. Springer Science + Business Media. Vol. 224(2). Published, 2013.
  • Fernandez, Diego P., Gale, Bruce K., Johnson, William P., Manangon, Eliana & Tasci, Tonguc O. (2013). Biased Cyclical Electrical Field Flow Fractionation for Separation of Sub 50 nm Particles. American Chemical Society (ACS). Vol. 85(23), 11225-11232. Published, 2013.
  • Carling G.T., Diaz X, Ponce M., Perez L., Nasimba L, Pazmino E, Rudd A, Fernandez DP, Merugu S, Gale BK, and *Johnson W.P., 2013, Trace element concentrations and loads in three southern Ecuador rivers impacted by artisanal gold mining, Water, Air, and Soil Pollution, Volume 224(2). Published, 06/2013.
  • Johnson W.P, and Markus Hilpert, 2013, Upscaling Colloid Transport and Retention under Unfavorable Conditions, Water Resources Research, 49, 1–14, doi:10.1002/wrcr.20433. Published, 06/2013.
  • Carling GT, Richards DC, Hoven H, Miller T, Fernandez DP, Rudd A, Pazmino E & Johnson WP (2013). Relationships of surface water, pore water, and sediment chemistry in wetlands adjacent to Great Salt Lake, Utah, and potential impacts on plant community health. The Science of the total environment. Vol. 443, 798-811. Published, 01/01/2013.
  • Britt, David W., Johnson, William, Calder, Alyssa J., Dimkpa, Christian O., Anderson, Anne J. & McLean, Joan E. (2012). Soil components mitigate the antimicrobial effects of silver nanoparticles towards a beneficial soil bacterium, Pseudomonas chlororaphis O6. Elsevier BV. Vol. 429, 215-222. Published, 2012.
  • Britt, David W., McLean, Joan E., Arey, Bruce, Johnson, William P., Anderson, Anne J., Lea, A. Scott & Dimkpa, Christian O. (2012). Nanospecific Inhibition of Pyoverdine Siderophore Production in Pseudomonas chlororaphis O6 by CuO Nanoparticles. American Chemical Society (ACS). Vol. 25(5), 1066-1074. Published, 2012.
  • Anderson, Anne J., Boyanov, Maxim I., Britt, David W., Dimkpa, Christian O., Johnson, William P., Latta, Drew E., Manangón, Eliana & McLean, Joan E. (2012). CuO and ZnO nanoparticles: phytotoxicity, metal speciation, and induction of oxidative stress in sand-grown wheat. Springer Science + Business Media. Vol. 14(9). Published, 2012.
  • Johnson, W. P., Gale, B. K. & Tasci, T. O. (2012). Cyclical magnetic field flow fractionation. AIP Publishing. Vol. 111(7), 07D128. Published, 2012.
  • Johnson, William P., Fernandez, Diego P. & Carling, Gregory T. (2012). Dust-mediated loading of trace and major elements to Wasatch Mountain snowpack. Elsevier BV. Vol. 432, 65-77. Published, 2012.
  • Carling GT, Fernandez DP & Johnson WP (2012). Dust-mediated loading of trace and major elements to Wasatch Mountain snowpack. The Science of the total environment. Vol. 432, 65-77. Published, 08/01/2012.
  • Dimkpa CO, McLean JE, Latta DE, Manangón E, Britt DW, Johnson WP, Boyanov MI, Anderson AJ. CuO and ZnO nanoparticles: phytotoxicity, metal speciation and induction of oxidative stress in sand-grown wheat, 2012, J. Nanopart. Res., DOI: 10.1007/s11051-012-1125-9. Published, 07/2012.
  • 11.Dimkpa C. O., McLean J.E., Britt D.W., Johnson W.P., Arey B., Lea A.S, Anderson A.J., 2012, Nanospecific Inhibition of Pyoverdine Siderophore Production in, Pseudomonas chlororaphis O6 by CuO Nanoparticles, Chemical Research in Toxicology, 25(5), 1066-1074. Published, 06/2012.
  • Carling G.T, Richards D.C., Hoven H.M., Miller T., Fernandez D.P., Rudd A., Pazmino E., *Johnson W.P., 2012, Relationships of surface water, pore water, and sediment chemistry in wetlands adjacent to Great Salt Lake, Utah, and potential impacts on plant community health, Science of the Total Environment, 443, 798-811. Published, 06/2012.
  • Tasci T.O, Manangon E., Fernandez D.P., Johnson W.P., Gale B.K., 2013, Separation of Magnetic Nanoparticles by Cyclical Electrical Field Flow Fractionation, IEEE Transactions on Magnetics, v 49, n 1, p 331-335, DOI: 10.1109/TMAG.2012.2223753. Published, 06/2012.
  • Dimkpa CO, McLean JE, Britt DW, Johnson WP, Arey B, Lea AS & Anderson AJ (2012). Nanospecific inhibition of pyoverdine siderophore production in Pseudomonas chlororaphis O6 by CuO nanoparticles. Chemical research in toxicology. Vol. 25, 1066-74. Published, 05/01/2012.
  • Carling G.T., Fernandez D.P., and *Johnson W.P., 2012, Dust-mediated loading of trace and major elements to Wasatch Mountain snowpack, Sci. Tot. Env,. 432, 65-77, doi:10.1016/j.scitotenv.2012.05.077. Published, 05/2012.
  • Ma H., Pazmino E.F, *Johnson W.P., 2011, Surface Heterogeneity on Hemispheres-in-Cell Model Yields All Experimentally-Observed Non-Straining Colloid Retention Mechanisms in Porous Media in the Presence of Energy Barriers, Langmuir, http://dx.doi.org/10.1021/la203587j. Published, 11/11/2011.
  • Pazmino E.F., Ma H., *Johnson W.P., 2011, Applicability of colloid filtration theory in size-distributed, reduced porosity, granular media in the absence of energy barriers, Environ. Sci. Technol. http://dx.doi.org/10.1021/es202203m . Published, 10/15/2011.
  • Johnson W.P., Pazmino E., Ma H., “Direct Observations of Colloid Retention in Granular Media in the Presence of Energy Barriers and Pitfalls of Inferring Mechanisms from Indirect Observations”, 2010, Water Research, 4 4 (4), 1158 – 1169, doi:10.1016/j.watres.2009.12.014. Published, 10/2011.
  • Ma H., Pazmino E.F., *Johnson W.P., 2011, Gravitational Settling Effects on Unit Cell Predictions of Colloidal Retention in Porous Media in the Absence of Energy Barriers, Environ. Sci. Technol., 45(19), 8306-8312. Published, 06/01/2011.
  • Johnson W.P., Ma H., Pazmino E., 2011, Straining Credibility: A general comment regarding common arguments used to infer straining as the mechanism of colloid retention in porous media, Environ. Sci. Technol., 45(9):3831-2. Published, 05/2011.
  • Dimkpa CO, Calder A, Gajjar P, Merugu S, Huang W, Britt DW, McLean JE, Johnson W.P., Anderson AJ., 2011, Interaction of silver nanoparticles with an environmentally beneficial bacterium, Pseudomonas chlororaphis, J Hazard Mater., 188(1-3):428-35. Published, 03/2011.
  • Carling G.T., Fernandez D.P., Huang W., Rudd A., Pazmino E., *Johnson W.P., 2011, Trace element particulate pulse and diel variations in perimeter freshwater wetlands of Great Salt Lake, Utah, Chemical Geology, doi:10.1016/j.chemgeo.2011.01.001 . Published, 02/2011.
  • Huang W., D. Fernandez, A. Rudd, *W. P. Johnson, D. Deubner, P. Sabey, J. Storrs, R. Larsen, 2010, Dissolution and nanoparticle generation behavior of Be-associated materials in synthetic lung fluid using inductively coupled plasma mass spectroscopy and flow field-flow fractionation , J. of Chromatography A, http://dx.doi.org/10.1016/j.chroma.2010.11.070. Published, 11/2010.
  • Dicataldo G, D.F. Hayes, *W.P. Johnson , W.O. Moellmer , T. Miller, 2010, Effect of dissolved oxygen, pH, and water temperature on diel changes of dissolved selenium and other trace metals in a Great Salt Lake wetland, Applied Geochem., 26, 28-36, doi:10.1016/j.apgeochem.2010.10.011. Released, 11/2010.
  • Ma H., *W. P. Johnson, “Colloid Retention in Porous Media of Various Porosities: Predictions by the Hemispheres-in-Cell Model”, 2010, Langmuir, 16 (3), 26(3), 1680-1687, doi: 10.1021/la902657v. Published, 09/2010.
  • Ma H., Julien Pedel, Paul Fife, and *W.P. Johnson, 2009, A New Platform to Predict Colloid Deposition in Porous Media, Environ. Sci. Technol., 43(22), 8573-8579, doi:10.1021/es9012421b. Published, 11/2009.
  • Gupta V., *Johnson W.P., Shafeian P., Ryu H., Alum A., Abbaszadegan M., Hubbs S., Rauch-Williams T., 2009, Riverbank filtration: comparison of pilot-scale transport with theory, Environ. Sci, Technol., 43(3) 669-676. Published, 10/2009.
  • Gajjar P, B. Pettee, D. W. Britt, W. Huang, W. P. Johnson, A. J. Anderson, 2009, Antimicrobial activities of commercial nanoparticles against an environmental soil microbe, Pseudomonas putida KT2440, J. Biological Engineering, 3:9 doi:10.1186/1754-1611-3-9. Published, 08/2009.
  • Johnson, W. P., X. Li, M. Tong, and H. Ma, 2009, Comment on “Transport and fate of bacteria in porous media: Coupled effects of chemical conditions and pore space geometry” by Saeed Torkzaban et al., Water Resour. Res., 45, W09603, doi:10.1029/2008WR007389. Published, 07/2009.
  • Naftz, D.L., Johnson, W.P., Freeman, M.L., Beisner, K., Diaz, X., and Cross, V.A., 2009, Estimation of selenium loads entering the south arm of Great Salt Lake, Utah, from May 2006 through March 2008: U.S. Geological Survey Scientific Investigations Report 2008–5069, 40 p. Published, 04/01/2009.
  • Diaz X., W.A. Oliver, D.L. Naftz, W.P. Johnson, 2009, Volatile Selenium Flux from the Great Salt Lake, Utah, Environ. Sci. Technol., 43 (1), pp 53–59, DOI: 10.1021/es801638w. Published, 04/01/2009.
  • Oliver W., W.P. Johnson, C.C Fuller, D.L. Naftz, 2009, Permanent selenium sedimentation flux from the Great Salt Lake, Utah, App. Geochem, 24 , 936-949. Published, 04/01/2009.
  • Diaz X., D.L. Naftz, W.P. Johnson, 2009, Selenium Mass Balance in the Great Salt Lake, Utah, Sci. Tot. Env. 407, 2333-2341. Published, 04/01/2009.
  • Beisner K., W.P. Johnson, D.L. Naftz, 2009, Selenium and trace element mobility affected by periodic interruption of meromixis in the Great Salt Lake, Utah, Science of the Total Environment, 407, 5263-5273. Published, 04/01/2009.
  • Diaz X, D. Fernandez, D.L. Naftz, W.P. Johnson, 2009, Size and Elemental Distributions of Nano- to Micro- Particulates in the Geochemically-stratified Great Salt Lake, App. Geochem., doi:10.1016/j.apgeochem.2009.04.031. Published, 04/01/2009.
  • Huilian Ma, Julien Pedel, Paul Fife, and W.P. Johnson, 2009, A New Platform to Predict Colloid Deposition in Porous Media, Environ. Sci. Technol., 43(22), 8573–8579. Published, 04/01/2009.
  • Johnson, W. P., X. Li, M. Tong, and H. Ma, 2009, Comment on “Transport and fate of bacteria in porous media: Coupled effects of chemical conditions and pore space geometry” by Saeed Torkzaban et al., Water Resour. Res., 45, W09603, doi:10.1029/2008WR007389. Published, 04/01/2009.
  • Tong M., H. Ma, *W.P. Johnson, 2008, Funneling of Flow into Grain-to-grain Contacts Drives Colloid-Colloid Aggregation in the Presence of an Energy Barrier, Environ. Sci. Technol. 42(8), 2826-2832, doi: 10.1021/es071888v. Published, 11/2008.
  • Johnson, W. P., M. Tong, and X. Li , 2007, On colloid retention in saturated porous media in the presence of energy barriers: The failure of α, and opportunities to predict η, Water Resour. Res., 43, W12S13, doi:10.1029/2006WR005770. Published, 10/2007.
  • Johnson W.P., Xiqing Li, and Gozde Yal, 2007, Colloid Retention in Porous Media: Mechanistic Confirmation of Wedging and Retention in Zones of Flow Stagnation, Environ. Sci. Technol., 41,1279-1287, doi: 10.1021/es061301x. Published, 09/2007.
  • Tong M., and *W.P. Johnson, 2006, Colloid Population Heterogeneity Drives Hyper-Exponential Deviation from Classic Filtration Theory, Environ. Sci. Technol., 2007, 41(2), 493-499, DOI: 10.1021/es061202j. Published, 11/2006.
  • Johnson W.P., X. li, and S. Assemi, 2006, Deposition and Re-entrainment Dynamics of Microbes and Non-Biological Colloids during Non-Perturbed Transport in Porous Media in the Presence of an Energy Barrier to Deposition, Advances in Water Resources, 30 (6-7), 1432-1454, doi:10.1016/j.advwatres.2006.05.020. Published, 08/2006.
  • Tong M., and *W.P. Johnson, 2006, Excess colloid retention in porous media as a function of colloid size, fluid velocity, and grain angularity, Environ. Sci. Technol., 40(24), 7725-7731, DOI: 10.1021/es061201r. Published, 07/2006.
  • Johnson W.P., 2006, Comment on Pang et al. (2005) Filtration and transport of Bacillus subtilis spores and the F-RNA phage MS2 in a coarse alluvial aquifer: Implications in the estimation of setback distances, J. Cont. Hyd., 86, 160-161. Published, 06/2006.
  • Assemi S., J. Nalaskowski, and *W.P. Johnson, 2006, Direct force measurements between latex microspheres and glass surface using Atomic Force Microscopy, Colloids & Surfaces A: Physicochemical and Engineering Aspects, 286 (1-3), 70-77. Published, 06/2006.
  • Assemi S., Jakub Nalaskowski, J.D. Miller, and W.P. Johnson, 2006, The Isoelectric Point of Fluorite by Direct Force Measurements Using Atomic Force Microscopy, Langmuir, 22(4); 1403-1405. Published, 05/2006.
  • Li X., C.L. Lin, J. D. Miller, *W.P. Johnson, 2006, Pore-scale Observation of Microsphere Deposition at Grain-Grain Contacts over Assemblage-scale Porous Media Domains Using X-ray Microtomography, Environ. Sci. Technol., 40 (12), 3762-3768. Published, 04/2006.
  • Li X., C.L. Lin, J. D. Miller, *W.P. Johnson, 2006, Role of grain to grain contacts on profiles of retained colloids in porous media in the presence of an energy barrier to deposition, Environ. Sci. Technol.. 40 (12), 3769-3774. Published, 03/2006.
  • Johnson W.P., M. Tong, and X. Li, 2005, Colloid Deposition in Environmental Porous Media: Deviation from Existing Theory is the Norm; Not the Exception, EOS 86(18), 179-180. Published, 12/2005.
  • Johnson W.P., and X. Li, 2005, Comment on: Tufenkji and Elimelech (2005) Breakdown of colloid filtration theory: role of the secondary energy minimum and surface charge heterogeneities, Langmuir, 21, 841-852, Langmuir, 21, 10895-10895. Published, 11/2005.
  • Tong M., T.A. Camesano, and *Johnson W.P., 2005, Spatial Variation in Deposition Rate Coefficients of an Adhesion-Deficient Bacterial Strain in Quartz Sand, Environmental Science & Technology, 39(10), 3679-3687. Published, 10/2005.
  • Li X., P. Zhang, C.L. Lin, and *W.P. Johnson, 2005, Role of Hydrodynamic Drag on Microsphere Deposition and Re-entrainment in Porous Media under Unfavorable Conditions, Environmental Science & Technology, 39(11), 4012-4020. Published, 09/2005.
  • Li X., and *W.P. Johnson, 2005, Non-Monotonic Variations in Removal Rate Coefficients of Microspheres in Porous Media under Unfavorable Deposition Conditions, Environmental Science & Technology, 39, 1658-1665. Published, 08/2005.
  • Tong M., X. Li, C. Brow, and *W.P. Johnson, 2005, Detachment-Influenced Transport of an Adhesion-Deficient Bacterial Strain in Water-Reactive Porous Media, Environmental Science & Technology, 39(8), 2500-2508. Published, 07/2005.
  • Dong, H., T. D. Scheibe, W. P. Johnson, C. M. Monkman, and M. E. Fuller, 2005, Direct Determination of Change of Bacterial Collision Efficiency with Transport Distance in Field Scale Bacterial Transport Experiments, Groundwater, 449(3), 415–429. Published, 06/2005.
  • Brow C., M. Tong, and *W.P. Johnson, and J. Ricka, 2005, Comparison of Microsphere Deposition in Porous Media versus Simple Shear Systems, Colloids & Surfaces A: Physicochemical and Engineering Aspects, 253, 125-136. Published, 05/2005.
  • Drake L.A., Meyer A.E, Forsberg R.L., Baier R.E., Doblin M.A., Heinemann S., Johnson W.P., Koch M., Rublee P.A. & Dobbs F.C., 2005, Potential Invasion of Microorganisms and Pathogens via ‘Interior Hull Fouling’: Biofilms inside Ballast-Water Tanks, Biological Invasions, 7(6), 969 – 982. Published, 04/2005.
  • Li X., T.D. Scheibe, and *W.P. Johnson, 2004, Apparent Decreases in Colloid Removal Rate Coefficients with Distance of Transport under Unfavorable Deposition Conditions: A General Phenomenon, Environmental Science & Technology, 38(21): 5616-5625, 2004. Published, 10/2004.
  • Fuller, M.E.; Mailloux, B.J.; Streger, S.; Hall, J.; Zhang, P.; Vainberg, S.; Johnson, W.P.; Onstott, T.C.; DeFlaun, 2004, Application of a vital fluorescent staining method for simultaneous, near real time concentration monitoring of two bacterial strains in an Atlantic Coastal Plain Aquifer in Oyster, VA, Applied & Environmental Microbiology, 70(3), 1680-1687. Published, 09/2004.
  • W.P. Johnson and W. O. McIntosh, 2003, Field investigation of enhanced detachment of attached bacterial cells by hydrodynamic collision with injected bacteria, J. Microb. Meth, 1789, 1-12. Published, 09/2003.
  • W.P. Johnson, G. Bao, W.W. John, 2002, Specific UV Absorbance of Aldrich Humic Acid: Changes During Transport in Aquifer Sediment, Environ. Sci. & Technol., 36(4), 608-616. Published, 07/2002.
  • Zhang, P., *Johnson, W.P., Scheibe, T.D., Choi, K., and Dobbs, F.G., 2001, Extended Tailing of Bacterial Concentrations at the Narrow Channel Site, Oyster, VA, Water Resources Research, 37(11), 2687-2698. Published, 11/2001.
  • W.P. Johnson, P. Zhang, P.M. Gardner, M.E. Fuller, and M.F. DeFlaun, 2001, Monitoring the Response of Indigenous Bacteria to the Arrival of Injected Bacteria using Ferrographic Capture, Applied and Environmental Microbiology, 67(10), 4908-4913. Published, 10/2001.
  • DeFlaun, M.F.; Fuller, M.E.; Johnson, W.P.; Zhang, P.; Mailloux, B.J.; Onstott, T.C.; Holben W.; Balkwill, D.; and White, D., 2001, Comparison of Innovative Methods for Monitoring Bacterial Transport, J. Microbial Methods, 47, 219-231. Published, 08/2001.
  • Zhang, P.F., *Johnson, W.P., Piana, M.J., Fuller, C.C., and Naftz, D.L., 2001, Differential Breakthrough of Microspheres and Bromide in a Zero-Valent Iron Permeable Reactive Barrier, Groundwater, 39(6), 831-840. Published, 07/2001.
  • Fuller, M.E.; Mailloux, B.J.; Zhang, P.; Streger, S.; Hall, J.; Vainberg, S.; Beavis, S.; Johnson, W.P.; Onstott, T.C.; DeFlaun, 2001, M.F. Field-scale evaluation of CFDA/SE staining coupled with multiple detection methods for assessing the transport of bacteria in situ. FEMS Microbiology Ecology 37(1), p. 55-66. Published, 06/2001.
  • Schmitz, P., Duyvesteyn, S., and *Johnson W.P., 2001, Adsorption of Aurocyanide Complexes onto Carbonaceous Matter from Preg-Robbing Goldstrike Ore, Hydrometallurgy, 61, 121-135. Published, 03/2001.
  • Johnson, W.P., Zhang, P., Fuller, M.E., Scheibe, T.D., Mailloux, B.J., Onstott, T.C., DeFlaun, M.F., Hubbard, S.S., Radtke, J., Kovacik, W.P., and Holben,W., 2001, Ferrographic Tracking of Bacterial Transport in the Field at the Narrow Channel Focus Area, Oyster, VA, Environmental Science & Technology. 35(1), 182-191. Accepted, 02/2001.
  • Stenebraten, J.F., and *Johnson, W.P., 2000, Characterization of Goldstrike Ore Carbonaceous Material: 2. Physical Characteristics, Minerals and Metallurgical Processing, 17(1), 1-9. Published, 06/2000.
  • Schmitz, P., *Johnson W.P., and Duyvesteyn, S., 2000, Gold Leaching from Goldstrike Ore Carbonaceous Matter and its Relationship to Preg-Robbing, Hydrometallurgy, 60, 25-40. Released, 05/2000.
  • John, W.W., Bao B., and *Johnson, W.P., and Stauffer, T.B., 2000, Mixed Sorption of Nonionic Surfactant Oligomers to Low foc Aquifer Sediment and PCE DNAPL, and the Resulting Effect on Kd,PCE, Environmental Science & Technology, 34(4), 672-279. Published, 04/2000.
  • Bao B., John, W.W., and *Johnson, W.P., 2000, Chromatographic Alteration of a Nonionic Surfactant Mixture During Transport in DNAPL-Contaminated Sediment, Environmental Science & Technology, 34(4), 680-685. Published, 03/2000.
  • Zhang, P., and *Johnson, W.P., 1999, Bacterial Tracking Using Ferrographic Separation, Environ. Sci. Technol., 33(14) 2456-2460. Published, 07/1999.
  • Johnson, W.P., 1999, Sediment Control of Facilitated Transport and Enhanced Desorption, ASCE, Journal of Environmental Engineering, 126(1), 47-56. Published, 07/1999.
  • Zhang, P., and *Johnson, W.P., 1999, Rapid Selective Ferrographic Enumeration of Bacteria, J. of Magnet. And Mag. Mat., 194, 267-274. Published, 04/1999.
  • Johnson, W.P., and John, W.W., 1999, A Comparison of Humic Substances and Surfactants as Remediation Agents: PCE Solubilization and Mobilization by Commercial Humic Acid, J. of Cont. Hyd., 35, 343-362. Published, 03/1999.
  • Stenebraten, J.F., and *Johnson, W.P., 1999, Characterization of Goldstrike Ore Carbonaceous Material: 1. Chemical Characteristics, Minerals and Metallurgical Processing, 16(3), 37-44. Published, 02/1999.
  • Johnson, W.P., Cabral, K., Lion L.W., and Corapcioglu, Y.M., 1998, Reconciliation of Expressions for the Modified Retardation Factor and Incorporation of Non-linear Effects, J. Cont. Hydr.32, 247-266. Published, 06/1998.