Amos Lab


Recent Publications

46) Blume, O.J., Guitard, E., Crann, C.A., Orekhov, M., Amos, R.T., Clark, I.D., Lapen, D.R., Blowes, D.W., Ptacek, C.J., Craiovan, E., Sunohara, M.D. (2022). Relationships between carbon age and CO2 efflux in agricultural and drainage ditch soils using the thermonuclear bomb-pulse. Accepted: Vadose Zone Journal.

44) Bailey, B.L., Amos, R.T., Blowes, D.W., Moore, M.L., Ptacek, C.J., Smith, L., Sego, D.C. (2022). Diavik Waste Rock Project: Predicting field-scale waste-rock drainage quality from humidity cell experiments. In Press: Economic Geology.

40) McNeill, B.J., Pakostova, E., Bain, J.G., Gould, W.D., Amos, R.T., Wilson, G.W., Ptacek, C.J., Blowes, D.W. (2020). Microbial community structure within a weathered waste-rock pile overlain by a monolayer soil cover. Applied Geochemistry, 114.

39) Barsi, D.R., Beier, N.A., Sego, D.C., Atherton, C., Blowes, D.W., Smith, L., Amos, R.T. (2019). Classifying variability of material properties in mine waste rock. CIM Journal, 10.

38) Langman, J., Sinclair, S., Amos, R.T., Wilson, D., Ptacek, C., Sego, D.C., Smith, L., Blowes, D.W. (2019). Alkalinity generation from weathering of accessory calcite and apatite and acid drainage neutralization in an Archean granitoid waste rock. Journal of Geochemical Exploration, 205.

37) Wilson, D., Amos, R.T., Blowes, D.W., Langman, J.B., Smith, L., Sego, D.C. (2018).  Diavik Waste Rock Project: Scale-up of a reactive transport conceptual model for temperature and sulfide-content dependent geochemical evolution of waste rock. Applied Geochemistry, 96, 177-190.

36) Wilson, D., Amos, R.T., Blowes, D.W., Langman, J.B., Ptacek, C.J., Smith, L., Sego, D.C. (2018). Diavik Waste Rock Project: A conceptual model for temperature and sulfide-content dependent geochemical evolution of waste rock - laboratory scale. Applied Geochemistry, 89, 160-172.

35) Bao, Z., Haberer, C.M., Maier, U., Amos, R.T., Blowes, D.W., Grathwohl, P. (2017).   Modeling controls on the chemical weathering of marine mudrocks from the Middle Jurassic in Southern Germany. Chemical Geology, 459, 1-12.

34) Langman, J., Blowes, D.W., Amos, R.T., Atherton, C., Wilson, D., Smith, L., Sego, D., Sinclair, S. (2017). Influence of a Tundra Freeze-Thaw Cycle on Sulfide Oxidation and Metal Leaching in a Low Sulfur, Granitic Waste Rock. Applied Geochemistry, 76, 9-21.

33) Langman, J., Veeramani, H., Blowes, D., Bailey, B., Wilson, D., Smith, L., Sego, D. Amos, R. Holland, S. (2017). Waste Rock Biogeochemistry in a Permafrost Environment: Examination of a Cover Design for a Low Sulfide, Granitic Waste Rock. Geomicrobiology Journal, 34, 656-669.

32) Sanz-Prat, A., Lu, C., Amos, R.T., Finkel, M., Blowes, D.W., Cirpka, O.A. (2016). Exposure-Time Based Modeling of Nonlinear Reactive Transport in Porous Media Subject to Physical and Geochemical Heterogeneity. Journal of Contaminant Hydrology, 192, 35-49.

31) Bao, Z., Haberer, C.M., Maier, U., Beckingham, B., Amos, R.T., Grathwohl, P. (2016) Modeling short-term concentration fluctuations of semi-volatile pollutants in the soil-plant-atmosphere system. Science of the Total Environment, 569-570, 159-167.

30) Bao, Z., Haberer, C., Maier, U., Beckingham, B., Amos, R.T., Grathwohl, P. (2015). Modeling long-term uptake and re-volatilization of semi-volatile organic compounds (SVOCs) across the soil-atmosphere interface. Science of the Total Environment, 538, 789-801. 

29) Sinclair, S.A., Pham, N., Amos, R.T., Blowes, D.W., Sego, D.C., Smith, L. (2015). Influence of Freeze-Thaw Dynamics on Internal Geochemical Evolution of Low Sulfide Waste Rock. Applied Geochemistry, 61, 160-174.

28) Langman, J.B., Blowes, D.W., Sinclair, S.A., Krentz, A., Amos, R.T., Smith, L.J.D., Pham, N.H., Sego, D.C., Smith, L. (2015). Early evolution of weathering and sulfide depletion of a low-sulfur, granitic, waste rock in an Arctic climate: a laboratory and field site comparison. J. Geochemical Exploration, 156, 61-71.

27) Ng, G.-H. C., Bekins, B.A., Cozzarelli, I.M., Baedecker, M.J., Bennett, P.C., Amos, R.T. Herkelrath, W. (2015). Reactive Transport Modeling of Geochemical Controls on Secondary Water Quality Impacts at a Crude Oil Spill Site near Bemidji, MN. Water Resources Research, doi: 10.1002/2015WR016964.

26) Jamieson-Hanes, J.H., Amos, R.T., Blowes, D.W. Ptacek, C.J. (2015). Dual mechanism conceptual model for Cr(VI) isotope fractionation during reduction by zero-valent iron under saturated flow conditions. Environmental Science & Technology, 49, 5467-5475.

25) Amos, R.T., Blowes, D.W., Bailey, B.L., Sego, D.C., Smith, L., Ritchie, A.I.M. (2015). Waste-Rock hydrogeology and geochemistry. Applied Geochemistry, 57, 140-156.

24) Wanner, C., Druhan, J.L., Amos, R.T., Alt-Epping, P., Steefel, C.I. (2015). Benchmarking the simulation of Cr isotope fractionation. Computational Geosciences, 19, 497-521.

23) Jamieson-Hanes, J.H., Lentz, A.M., Amos, R.T., Ptacek, C.J., Blowes, D.W. (2014). Examination of Cr(VI) treatment by zero-valent iron using in situ, real-time X-ray absorption spectroscopy and Cr isotope measurements. Geochimica et Cosmochimica Acta, 142, 299-313.

22) Ng, G.-H. C., Bekins, B.A., Cozzarelli, I.M., Baedecker, M.J., Bennett, P.C., Amos, R.T. (2014). A Mass Balance Approach to Investigating Geochemical Controls on Secondary Water Quality Impacts at a Crude Oil Spill Site near Bemidji, MN. Journal of Contaminant, Hydrology, 164, 1-15.

21) Weber, A., Ruhl, A.S., Amos, R.T. (2013). Investigating dominant processes in ZVI permeable reactive barriers using reactive transport modeling. Journal of Contaminant Hydrology, 151, 68-82.

20) Bilardi, S., Amos, R.T., Blowes, D.W., Calabro, P.S., Moraci, N. (2013). Reactive Transport Modeling of ZVI Column Experiments for Nickel Remediation. Ground Water Monitoring and Remediation, 33, 97-104. DOI: 10.1111/j.1745-6592.2012.01417.

19) Pham, N.H., Sego, D.C., Arenson, L.U., Blowes, D.W., Amos, R.T., Smith, L. (2013). The Diavik Waste Rock Project: Measurement of the thermal regime of a waste rock pile in a permafrost environment. Applied Geochemistry, 36, 234-245.

18) Chi, X., Amos, R.T., Stastna, M., Blowes, D.W., Sego, D.C., Smith, L. (2013) Implications of wind-induced gas transport in a waste rock pile. Applied Geochemistry, 36, 246-255.

17) Jamieson-Hanes, J.H., Amos, R.T., Blowes, D.W. (2012). Chromium Isotope Fractionation During Reduction of Cr(VI) Under Saturated Flow Conditions. Environmental Science & Technology, 46, 13311–13316.

16) Amos, R.T., Bekins, B.A., Cozzarelli, I.M., Voytek, M., Kirshtein, J., Jones, E.J.P., Blowes, D.W. (2012) Evidence for iron-mediated anaerobic methane oxidation in a crude oil-contaminated aquifer. Geobiology, 10, 506-517.

15) Jeen, S.-W., Amos, R.T., Blowes, D.W. (2012). Modeling Gas Formation and Mineral Precipitation in a Granular Iron Column. Environmental Science & Technology, 46, 6742–6749.

14) Amos, R.T., Bekins, B.A., Delin, G.N., Cozzarelli, I.M., Blowes, D.W. (2011). Methane oxidation in a crude oil contaminated aquifer: Delineation of aerobic reactions at the plume fringes. Journal of Contaminant Hydrology, 125, 13-25.

13) Gibson, B., Amos, R.T., Blowes, D.W.  (2011) 34S/32S fractionation during sulfate reduction in groundwater treatment systems: reactive transport modeling. Environmental Science & Technology 45, 2863–2870.

12) Stewart, B.D., Amos, R.T., Fendorf. S. (2011). Effect of Uranium(VI) Speciation on Simultaneous Microbial Reduction of Uranium(VI) and Iron(III).  Journal of Environmental Quality, 40, 90-97.

11) Stewart, B.D., Amos, R.T., Nico, P.S., Fendorf, S. (2011). Influence of uranyl speciation and iron oxides on uranium biogeochemical redox reactions. Geomicrobiology Journal, 28, 444-456.

10) Molins, S., Mayer, K. U., Amos, R. T., Bekins, B.A. (2010), Vadose zone attenuation of organic compounds at a crude oil spill site - Interactions between biogeochemical reactions and multicomponent gas transport. Journal of Contaminant Hydrology, 112, 15-29, doi:10.1016/j.jconhyd.2009.09.002.

9) Amos, R.T., Blowes, D.W. (2010). Versatile direct-push profiler for the investigation of volatile compounds near the water table. Water Resources Research, 44, W00D17, doi:10.1029/2008WR006936.

8) Amos, R.T., Blowes, D.W., Smith, L., Sego, D.C. (2009). Measurement of wind induced pressure gradients in a waste rock pile. Vadose Zone Journal, 8, 953-962. doi:10.2136/vzj2009.0002.

7) Williams, R.L., Mayer, K.U., Amos, R.T., Blowes, D.W., Ptacek, C.J. (2007). Using dissolved gas analysis to investigate the performance of an organic carbon permeable reactive barrier for the treatment of mine drainage. Applied Geochemistry, 22, 90-108.

6) Amos, R.T., Mayer, K.U. (2006a). Investigating ebullition in a sand column using dissolved gas analysis and reactive transport modelling. Environmental Science & Technology, 40, 5361-5367.

5) Amos, R.T., Mayer, K.U. (2006b). Investigating the role of gas bubble formation and entrapment in contaminated aquifers: Reactive transport modelling. Journal of Contaminant Hydrology, 87, 123-154.

4) Amos, R. T., Mayer, K. U., Bekins, B. A., Delin, G. N., Williams, R. L. (2005). Use of dissolved and vapor-phase gases to investigate methanogenic degradation of petroleum hydrocarbon contamination in the subsurface. Water Resources Research, 41, W02001, doi:10.1029/2004WR003433.

3) Amos, R.T., Mayer, K.U., Blowes, D.W., Ptacek, C.J. (2004). Reactive transport modeling of column experiments for the remediation of acid mine drainage. Environmental Science & Technology, 38, 3131-3138.

2) Amos, R.T., Henderson, G.S. (2003). The effects of alkali cation mass and radii on the density of alkali germanate and alkali germanophosphate glasses. Journal of Non-Crystalline Solids, 331, 108-121.

1) Henderson, G.S., Amos, R.T. (2003). The structure of alkali germanophosphate glasses by Raman spectroscopy. Journal of Non-Crystalline Solids, 328, 1-19.