Thomas Wietsma

Earth Scientist

2020

Bhattacharjee A., D. Velickovic, T.W. Wietsma, S.L. Bell, J.K. Jansson, K.S. Hofmockel, and C.R. Anderton. 2020. "Visualizing Microbial Community Dynamics Via a Controllable Soil Environment." mSystems 5, no. 1:Article No. e00645-19. PNNL-SA-147223. doi:10.1128/mSystems.00645-19

Boiteau R.M., R.K. Kukkadapu, J.B. Cliff, C.R. Smallwood, L. Kovarik, M.G. Wirth, and M.H. Engelhard, et al. 2020. "Calcareous organic matter coatings sequester siderophores in alkaline soils." Science of the Total Environment 724. PNNL-SA-147851. doi:10.1016/j.scitotenv.2020.138250

Ogden A.J., T.W. Wietsma, T.E. Winkler, Y. Farris, G.L. Myers, and A. Ahkami. 2020. "Dynamics of Global Gene Expression and Regulatory Elements in Growing Brachypodium Root System." Scientific Reports 10. PNNL-SA-145907. doi:10.1038/s41598-020-63224-z

2019

Ahkami A., W. Wang, T.W. Wietsma, T.E. Winkler, I. Lange, G.C. Jansson, and M.D. Lange, et al. 2019. "Metabolic shifts associated with drought-induced senescence in Brachypodium." Plant Science 289. PNNL-SA-145496. doi:10.1016/j.plantsci.2019.110278

2018

Popel A., T.W. Wietsma, M.H. Engelhard, A. Lea, O. Qafoku, C. Grygiel, and I. Monnet, et al. 2018. "The Effect of Ion Irradiation on the Dissolution of UO2 and UO2-based Simulant Fuel." Journal of Alloys and Compounds 735. PNNL-SA-129551. doi:10.1016/j.jallcom.2017.11.216

Rockhold M.L., F.A. Spane, T.W. Wietsma, D.R. Newcomer, R.E. Clayton, D.I. Demirkanli, and D.L. Saunders, et al. 2018. Physical and Hydraulic Properties of Sediments from the 200-DV-1 Operable Unit. PNNL-27846. Richland, WA: Pacific Northwest National Laboratory.

Wang Y., N. Wei, C. Zhang, T.W. Wietsma, A.H. Bonneville, X. Li, and M. Li, et al. 2018. "Experimental study of drying effects during supercritical CO₂ displacement in a pore network." Microfluidics and Nanofluidics 22, no. 9:101. PNNL-SA-137617. doi:10.1007/s10404-018-2122-9

2017

Childers M.I., M. Nguyen, K.A. Rod, P.K. Koech, W. Um, J. Chun, and V. Glezakou, et al. 2017. "Polymer-Cement Composites with Self-Healing Ability for Geothermal and Fossil Energy Applications." Chemistry of Materials 29, no. 11:4708-4718. PNNL-SA-127162. doi:10.1021/acs.chemmater.7b00344

Childers M.I., M.C. Endres, C.A. Burns, B.J. Garcia, J. Liu, T.W. Wietsma, and A.H. Bonneville, et al. 2017. "Novel Highly Dispersible, Thermally Stable Core/Shell Proppants for Geothermal Applications." Geothermics 70. PNNL-SA-121506. doi:10.1016/j.geothermics.2017.05.013

Maddi B., E.A. Panisko, T.W. Wietsma, T.L. Lemmon, M.S. Swita, K.O. Albrecht, and D.T. Howe. 2017. "Quantitative Characterization of Aqueous Byproducts from Hydrothermal Liquefaction of Municipal Wastes, Food Industry Wastes, and Biomass Grown on Waste." ACS Sustainable Chemistry & Engineering 5, no. 3:2205-2214. PNNL-SA-121413. doi:10.1021/acssuschemeng.6b02367

2016

Chang C., Q. Zhou, T.J. Kneafsey, M. Oostrom, T.W. Wietsma, and Q. Yu. 2016. "Pore-Scale Supercritical CO₂ Dissolution and Mass Transfer under Imbibition Conditions." Advances in Water Resources 92. PNNL-SA-117137. doi:10.1016/j.advwatres.2016.03.015

Maddi B., E.A. Panisko, T.W. Wietsma, T.L. Lemmon, M.S. Swita, K.O. Albrecht, and D.T. Howe. 2016. "Quantitative Characterization of the Aqueous Fraction from Hydrothermal Liquefaction of Algae." Biomass & Bioenergy 93. PNNL-SA-113775. doi:10.1016/j.biombioe.2016.07.010

Moore J.S., S.S. Xantheas, J.W. Grate, T.W. Wietsma, E. Gratton, and A. Vasdekis. 2016. "Modular Polymer Biosensors by Solvent Immersion Imprint Lithography." Journal of Polymer Science. Part B, Polymer Physics 54, no. 1:98-103. PNNL-SA-112121. doi:10.1002/polb.23961

Oostrom M., Y. Mehmani, P. Romero Gomez, Y. Tang, H. Liu, H. Yoon, and Q. Kang, et al. 2016. "Pore-scale and Continuum Simulations of Solute Transport Micromodel Benchmark Experiments." Computational Geosciences 20, no. 4:857-879. PNNL-SA-100394. doi:10.1007/s10596-014-9424-0

2015

Panisko E.A., T.W. Wietsma, T.L. Lemmon, K.O. Albrecht, and D.T. Howe. 2015. "Characterization of the Aqueous Fractions from Hydrotreatment and Hydrothermal Liquefaction of Lignocellulosic Feedstocks." Biomass & Bioenergy 74. PNNL-SA-105768. doi:10.1016/j.biombioe.2015.01.011

Scheibe T.D., W.A. Perkins, M.C. Richmond, M.I. McKinley, P. Romero Gomez, M. Oostrom, and T.W. Wietsma, et al. 2015. "Pore-Scale and Multiscale Numerical Simulation of Flow and Transport in a Laboratory-Scale Column." Water Resources Research 51, no. 2:1023-1035. PNNL-SA-103382. doi:10.1002/2014WR015959

Truex M.J., V.R. Vermeul, D. Adamson, M. Oostrom, L. Zhong, R.D. Mackley, and B.G. Fritz, et al. 2015. "Field Test of Enhanced Remedial Amendment Delivery Using a Shear-Thinning Fluid." Ground Water Monitoring and Remediation 35, no. 3:34-45. PNNL-SA-101736. doi:10.1111/gwmr.12101

2014

Oostrom M., and T.W. Wietsma. 2014. Intermediate-Scale Laboratory Experiments of Subsurface Flow and Transport Resulting from Tank Leaks. PNNL-23586. Richland, WA: Pacific Northwest National Laboratory. Intermediate-Scale Laboratory Experiments of Subsurface Flow and Transport Resulting from Tank Leaks

Oostrom M., M.J. Truex, T.W. Wietsma, and G.D. Tartakovsky. 2014. "Pore-Water Extraction from Unsaturated Porous Media: Intermediate-Scale Laboratory." Vadose Zone Journal 13, no. 8. PNNL-SA-102165. doi:10.2136/vzj2014.04.0044

Oostrom M., M.J. Truex, V.R. Vermeul, L. Zhong, G.D. Tartakovsky, and T.W. Wietsma. 2014. "Remedial Amendment Delivery near the Water Table Using Shear Thinning Fluids: Experiments and Numerical Simulations." Environmental Processes 1, no. 4:331-351. PNNL-SA-103590. doi:10.1007/s40710-014-0031-9

Wunschel D.S., H.E. Engelmann, K.D. Victry, B.H. Clowers, C.M. Sorensen, N.B. Valentine, and C.M. Mahoney Fahey, et al. 2014. "Protein markers for identification of Yersinia pestis and their variation related to culture." Molecular and Cellular Probes 28, no. 2-3:65-72. PNNL-SA-96155. doi:10.1016/j.mcp.2013.12.001

2013

Fanizza M.F., H. Yoon, C. Zhang, M. Oostrom, T.W. Wietsma, N.J. Hess, and M.E. Bowden, et al. 2013. "Pore-Scale Evaluation of Uranyl Phosphate Precipitation in a Model Groundwater System." Water Resources Research 49, no. 2:874-890. PNNL-SA-91344. doi:10.1002/wrcr.20088

Grate J.W., M.G. Warner, J.W. Pittman, K.J. Dehoff, T.W. Wietsma, C. Zhang, and M. Oostrom. 2013. "Silane Modification of Glass and Silica Surfaces to Obtain Equally Oil-Wet Surfaces in Glass-Covered Silicon Micromodel Applications." Water Resources Research 49, no. 8:4724-4729. PNNL-SA-90520. doi:10.1002/wrcr.20367

Johnson T.C., M. Oostrom, M.J. Truex, J.N. Thomle, and T.W. Wietsma. 2013. "Determination of water saturation using gas phase partitioning tracers and time-lapse electrical conductivity measurements." Vadose Zone Journal 12, no. 2. PNNL-SA-91015. doi:10.2136/vzj2012.0142

Truex M.J., M. Oostrom, T.W. Wietsma, G.V. Last, and D.C. Lanigan. 2013. Pore-Water Extraction Scale-Up Study for the SX Tank Farm. PNNL-21882; RPT-DVZ-AFRI-011. Richland, WA: Pacific Northwest National Laboratory. Pore-Water Extraction Scale-Up Study for the SX Tank Farm

Wang Y., C. Zhang, N. Wei, M. Oostrom, T.W. Wietsma, X. Li, and A. Bonneville. 2013. "Experimental study of crossover from capillary to viscous fingering for supercritical CO₂ - water displacement in a homogeneous pore network." Environmental Science & Technology 47, no. 1:212-218. PNNL-SA-87244. doi:10.1021/es3014503

2012

Amonette J.E., P.M. Jeffers, O. Qafoku, C.K. Russell, D.R. Humphrys, T.W. Wietsma, and M.J. Truex. 2012. Abiotic degradation rates for carbon tetrachloride and chloroform: Final report. PNNL-22062; RPT-DVZ-AFRI-012. Richland, WA: Pacific Northwest National Laboratory. Abiotic degradation rates for carbon tetrachloride and chloroform: Final report.

Grate J.W., K.J. Dehoff, M.G. Warner, J.W. Pittman, T.W. Wietsma, C. Zhang, and M. Oostrom. 2012. "Correlation of Oil-Water and Air-Water Contact Angles of Diverse Silanized Surfaces and Relationship to Fluid Interfacial Tensions." Langmuir 28, no. 18:7182-7188. PNNL-SA-83545. doi:10.1021/la204322k

Oostrom M., K.V. Smoot, T.W. Wietsma, M.J. Truex, M.W. Benecke, and G.B. Chronister. 2012. "Vadose Zone Soil Moisture Wicking Using Super Absorbent Polymers." Vadose Zone Journal 11, no. 4. PNNL-SA-84832. doi:10.2136/vzj2011.0200

Oostrom M., T.W. Wietsma, C.E. Strickland, V.L. Freedman, and M.J. Truex. 2012. "Sensor and numerical simulator evaluation for porous medium desiccation and rewetting at the intermediate laboratory scale." Vadose Zone Journal 11, no. 1:Article No. 0089. PNNL-SA-83396. doi:10.2136/vzj2011.0089

Oostrom M., V.L. Freedman, T.W. Wietsma, J.H. Dane, and M.J. Truex. 2012. "Effects of Porous Medium Heterogeneity on Vadose Zone Desiccation: Intermediate-scale Laboratory Experiments and Simulations." Vadose Zone Journal 11, no. 4. PNNL-SA-84135. doi:10.2136/vzj2011.0168

2011

Oostrom M., G.D. Tartakovsky, T.W. Wietsma, M.J. Truex, and J.H. Dane. 2011. "Determination of Water Saturation in Relatively Dry Porous Media Using Gas-phase Tracer Tests." Vadose Zone Journal 10, no. 2:634-641. PNNL-SA-74637.

Oostrom M., V.L. Freedman, T.W. Wietsma, and M.J. Truex. 2011. Pore-Water Extraction Intermediate-Scale Laboratory Experiments and Numerical Simulations. PNNL-20507. Richland, WA: Pacific Northwest National Laboratory. Pore-Water Extraction Intermediate-Scale Laboratory Experiments and Numerical Simulations

Truex M.J., M. Oostrom, V.L. Freedman, C.E. Strickland, T.W. Wietsma, G.D. Tartakovsky, and A.L. Ward. 2011. Laboratory and Modeling Evaluations in Support of Field Testing for Desiccation at the Hanford Site. PNNL-20146. Richland, WA: Pacific Northwest National Laboratory. Laboratory and Modeling Evaluations in Support of Field Testing for Desiccation at the Hanford Site

Truex M.J., T. Macbeth, V.R. Vermeul, B.G. Fritz, D.P. Mendoza, R.D. Mackley, and T.W. Wietsma, et al. 2011. "Demonstration of Combined Zero-Valent Iron and Electrical Resistance Heating for In Situ Trichloroethene Remediation." Environmental Science & Technology 45, no. 12:5346-5351. PNNL-SA-76701. doi:10.1021/es104266a

Truex M.J., V.R. Vermeul, D.P. Mendoza, B.G. Fritz, R.D. Mackley, M. Oostrom, and T.W. Wietsma, et al. 2011. "Injection of Zero Valent Iron into an Unconfined Aquifer Using Shear-Thinning Fluids." Ground Water Monitoring and Remediation 31, no. 1:50-58. PNNL-SA-70324.

Zhang C., M. Oostrom, J.W. Grate, T.W. Wietsma, and M.G. Warner. 2011. "Liquid CO₂ Displacement of Water in a Dual-Permeability Pore Network Micromodel." Environmental Science & Technology 45, no. 17:7581-7588. PNNL-SA-81215. doi:10.1021/es201858r

Zhang C., M. Oostrom, T.W. Wietsma, J.W. Grate, and M.G. Warner. 2011. "Influence of Viscous and Capillary Forces on Immiscible Fluid Displacement: Pore-Scale Experimental Study in a Water-Wet Micromodel Demonstrating Viscous and Capillary Fingering." Energy and Fuels 25, no. 8:3493-3505. PNNL-SA-79115. doi:10.1021/ef101732k

2010

Amonette J.E., P.M. Jeffers, O. Qafoku, C.K. Russell, D.R. Humphrys, T.W. Wietsma, and M.J. Truex. 2010. Abiotic Degradation Rates for Carbon Tetrachloride and Chloroform: Progress in FY 2010. PNNL-20044. Richland, WA: Pacific Northwest National Laboratory. Abiotic Degradation Rates for Carbon Tetrachloride and Chloroform: Progress in FY 2010

Amonette J.E., P.M. Jeffers, O. Qafoku, C.K. Russell, T.W. Wietsma, and M.J. Truex. 2010. Abiotic Degradation Rates for Carbon Tetrachloride and Chloroform: Progress in FY2009. PNNL-19142. Richland, WA: Pacific Northwest National Laboratory. Abiotic Degradation Rates for Carbon Tetrachloride and Chloroform: Progress in FY2009

Grate J.W., C. Zhang, T.W. Wietsma, M.G. Warner, N.C. Anheier, B.E. Bernacki, and G. Orr, et al. 2010. "A note on the visualization of wetting film structures and a nonwetting immiscible fluid in a pore network micromodel using a solvatochromic dye." Water Resources Research 46. PNNL-SA-71572. doi:10.1029/2010WR009419

Oostrom M., M.J. Truex, G.D. Tartakovsky, and T.W. Wietsma. 2010. "Three-Dimensional Simulation of Volatile Organic Compound Mass Flux from the Vadose Zone to Groundwater." Ground Water Monitoring and Remediation 30, no. 3:45-56. PNNL-SA-68431. doi:10.1111/j.1745-6592.2010.01285.x

Oostrom M., M.J. Truex, G.D. Tartakovsky, and T.W. Wietsma. 2010. "Three-Dimensional Simulation of Volatile Organic Compound Mass Flux from the Vadose Zone to Groundwater." Ground Water Monitoring and Remediation 30, no. 3:45-56. PNNL-SA-70865.

Truex M.J., M. Oostrom, Z.F. Zhang, K.C. Carroll, J.A. Schramke, T.W. Wietsma, and G.D. Tartakovsky, et al. 2010. Evaluation of Soil Flushing for Application to the Deep Vadose Zone in the Hanford Central Plateau. PNNL-19938. Richland, WA: Pacific Northwest National Laboratory. Evaluation of Soil Flushing for Application to the Deep Vadose Zone in the Hanford Central Plateau

Willingham T.W., C. Zhang, C.J. Werth, A.J. Valocchi, M. Oostrom, and T.W. Wietsma. 2010. "Using Dispersivity Values to Quantify the Effects of Pore-Scale Flow Focusing on Enhanced Reaction along a Transverse Mixing Zone." Advances in Water Resources 33, no. 4:525-535. PNNL-SA-70933. doi:10.1016/j.advwatres.2010.02.004

Zhang C., K.J. Dehoff, N.J. Hess, M. Oostrom, T.W. Wietsma, A.J. Valocchi, and B.W. Fouke, et al. 2010. "Pore-Scale Study of Transverse Mixing Induced CaCO3 Precipitation and Permeability Reduction in a Model Subsurface Sedimentary System." Environmental Science & Technology 44, no. 20:7833-7838. PNNL-SA-73959. doi:10.1021/es1019788

2009

Amonette J.E., O. Qafoku, T.W. Wietsma, P.M. Jeffers, C.K. Russell, and M.J. Truex. 2009. Carbon Tetrachloride and Chloroform Attenuation Parameter Studies: Heterogeneous Hydrolytic Reactions -- Status Report. PNNL-18735. Richland, WA: Pacific Northwest National Laboratory. Carbon Tetrachloride and Chloroform Attenuation Parameter Studies: Heterogeneous Hydrolytic Reactions -- Status Report

Oostrom M., T.W. Wietsma, J.H. Dane, M.J. Truex, and A.L. Ward. 2009. "Desiccation of unsaturated porous media: Intermediate-scale experiments and numerical simulation." Vadose Zone Journal 8, no. 3:643-650. PNNL-SA-64019.

Szecsody J.E., M.L. Rockhold, M. Oostrom, R.C. Moore, C.A. Burns, M.D. Williams, and L. Zhong, et al. 2009. Sequestration of Sr-90 Subsurface Contamination in the Hanford 100-N Area by Surface Infiltration of a Ca-Citrate-Phosphate Solution. PNNL-18303. Richland, WA: Pacific Northwest National Laboratory. Sequestration of Sr-90 Subsurface Contamination in the Hanford 100-N Area by Surface Infiltration of a Ca-Citrate-Phosphate Solution

Wietsma T.W., M. Oostrom, M.A. Covert, T.E. Queen, and M.J. Fayer. 2009. "An automated tool for three types of saturated hydraulic conductivity laboratory measurements." Soil Science Society of America Journal 73, no. 2:466-470. PNNL-SA-59658.

Yoon H., M. Oostrom, T.W. Wietsma, C.J. Werth, and A.J. Valocchi. 2009. "Numerical and experimental investigation of DNAPL removal mechanisms in a layered porous medium by means of soil vapor extraction." Journal of Contaminant Hydrology 109, no. 1-4:1-13. PNNL-SA-64091. doi:10.1016/j.jconhyd.2009.07.001

2008

Amonette J.E., P.M. Jeffers, O. Qafoku, C.K. Russell, T.W. Wietsma, and M.J. Truex. 2008. Abiotic Degradation Rates for Carbon Tetrachloride: and Chloroform: Progress in FY 2008. PNNL-18020. Richland, WA: Pacific Northwest National Laboratory. Abiotic Degradation Rates for Carbon Tetrachloride: and Chloroform: Progress in FY 2008

Zhong L., M. Oostrom, T.W. Wietsma, and M.A. Covert. 2008. "Enhanced Remedial Amendment Delivery through Fluid Viscosity Modifications: Experiments and numerical simulations." Journal of Contaminant Hydrology 101, no. 1-4:29-41. PNNL-SA-59438. doi:10.1016/j.jconhyd.2008.07.007

2007

Istok J.D., M.M. Park, A.D. Peacock, M. Oostrom, and T.W. Wietsma. 2007. "An experimental investigation of nitrogen gas produced during denitrification." Ground Water 45, no. 4:461-467. PNNL-SA-53488.

Oostrom M., J.H. Dane, and T.W. Wietsma. 2007. "A Review of Multidimensional, Multifluid Intermediate-scale Experiments: Flow Behavior, Saturation Imaging, and Tracer Detection and Quantification." Vadose Zone Journal 6, no. 3:610-637. PNNL-SA-55643. doi:10.2136/vzj2006.0178

Oostrom M., M.J. Truex, P.D. Thorne, and T.W. Wietsma. 2007. "Three-Dimensional Multifluid Flow and Transport at the Brooklawn Site near Baton Rouge, LA: A Case Study." Soil & Sediment Contamination 16, no. 2:109-141. PNWD-SA-7319.

Oostrom M., T.W. Wietsma, M.A. Covert, and V.R. Vermeul. 2007. "Zero-valent Iron Emplacement in Permeable Porous Media Using Polymer Additions." Ground Water Monitoring and Remediation 27, no. 1:122-130. PNNL-SA-52567.

2006

Oostrom M., C. Hofstee, and T.W. Wietsma. 2006. "Behavior of a Viscous LNAPL under Variable Water Table Conditions." Soil & Sediment Contamination 15, no. 6:543 - 564. PNNL-SA-46807. doi:10.1080/15320380600958976

Oostrom M., C. Hofstee, and T.W. Wietsma. 2006. "LNAPLs do not Always Float: An Example Case of a Viscous LNAPL under Variable Water Table Conditions." In 26th Annual American Geophysical Union Hydrology Days, March 20-22, 2006, edited by J.A. Ramirez, 119-130. Fort Collins, Colorado: Colorado State University. PNNL-SA-48870. LNAPLs do not Always Float: An Example Case of a Viscous LNAPL under Variable Water Table Conditions

Oostrom M., J.H. Dane, and T.W. Wietsma. 2006. "A Review of Multidimensional, Multifluid Intermediate-scale Experiments: Nonaqueous Phase Liquid Dissolution and Enhanced Remediation." Vadose Zone Journal 5. PNNL-SA-47245. doi:10.2136/vzj2005.0125

Oostrom M., T.W. Wietsma, M.A. Covert, and V.R. Vermeul. 2006. "Micron-Size Zero-Valent Iron Emplacement in Porous Media Using Polymer Additives: Column and Flow Cell Experiments." In 26th Annual American Geophysical Union Hydrology Days Conference Proceedings, March 20-22, 2006, Colorado State University, edited by J.A. Ramirez, 131-139. Fort Collins, Colorado: Colorado State University. PNNL-SA-48855. Micron-Size Zero-Valent Iron Emplacement in Porous Media Using Polymer Additives: Column and Flow Cell Experiments

2005

Oostrom, M., J.H. Dane, and T.W. Wietsma. 2005. Removal of carbon tetrachloride from a layered porous medium by means of soil vapor extraction enhanced by desiccation and water table reduction Vadose Zone J. 4: 1170-1182.

Laskin A, T.W. Wietsma, B.J. Krueger, and V.H. Grassian. 2005. Heterogeneous chemistry of individual mineral dust particles with nitric acid: A combined CCSEM/EDX, ESEM, and ICP-MS study. Journal of Geophysical research-atmospheres 110 (D10): Art. No. D10208.

Oostrom, M., M.D. White, Lenhard, R.J., P. van Geel, and T.W. Wietsma. 2005. Comparison of NAPL residual formation theoretical models. Vadose Zone Journal. 4: 163-174.

2003

Oostrom M., P.D. Thorne, M.D. White, M.J. Truex, and T.W. Wietsma. 2003. Numerical modeling to assess DNAPL movement and removal at the Scenic Site Operable Unit near Baton Rouge, Louisiana: A case study. J. of Soil and Sediment Contamination. 12 (6): 901-926

Oostrom, M., C. Hofstee, R.J. Lenhard, and T.W. Wietsma. 2003. Flow behavior and residual saturation formation of injected carbon tetrachloride in unsaturated heterogeneous porous media. J. of Contaminant Hydrology. 64: 93-112.

2001

Oostrom, M., C. Hofstee, R.J. Lenhard, and T.W. Wietsma. 2001. In-situ oxidation of trichloroethene by permanganate: effects on porous medium hydraulic properties  J. of Contaminant Hydrology. 50: 79-98.

2000

Brusseau M.L., N.T. Nelson, M. Oostrom, Z. Zhang, G.R. Johnson, and T.W. Wietsma. 2000 Influence of Heterogeneity and Sampling Method on Aqueous Concentrations Associated with NAPL Dissolution.  Environmental Science and Technology, 34 (17), 3657 -3664.

Oostrom, M., J.H. Dane, and T.W. Wietsma. 2000. Gamma Radiation Techniques in Subsurface Multifluid Flow and Transport Studies. American Society of Mechanical Engineers Journal  Paper 11194: 1-7.

 1999

Nelson N.T., M. Oostrom, T.W. Wietsma, and M.L. Brusseau. 1999 Partitioning tracer method for the in situ measurement of DNAPL saturation: Influence of heterogeneity and sampling method.  Environmental Science and Technology, 33 (22), 4046 -4053.

 1997

Murphy EM, T.R. Ginn, A. Chilakapati A, C.T. Resch, J.L. Phillips, T.W. Wietsma, and C.M. Spadoni. 1997  The influence of physical heterogeneity on microbial degradation and distribution in porous media.  Water Resources Research 33 (5): 1087-1103.

 1996

Muyskens MA, S.V. Glass, T.W. Wietsma, and T.M. Gray. 1996  Data acquisition in the chemistry laboratory using LabVIEW software.  Journal of Chemical Education 73 (12): 1112-1114.

Kaplan D.I, K.J. Cantrell, T.W. Wietsma, and M.A. Potter. 1996. Retention of zero-valent iron colloids by sand columns: Application to chemical barrier formation. J. of Environmental Quality. 25 (5): 1086-1094

 1995

Cantrell K.J, D.I. Kaplan, and T.W. Wietsma. 1995. Zero-valent iron for the in-situ remediation of selected metals in groundwater. J. of Hazardous Materials. 42 (2): 201-212.

 1994

Murphy EM, J.M. Zachara, S.C. Smith, J.L. Phillips, and T.W. Wietsma. 1994  Interaction of hydrophobic organic-compounds with mineral-bound humic substances. Environmental Science and Technology, 28 (7): 1291-1299.