The use of sodium polytungstate as an X-ray contrast agent to reduce the beam hardening artifact in hydrological laboratory experiments

Berger, M.J., Hubbell, J.H., Seltzer, S.M., Chang, J., Coursey, J.S., Sukumar, R., Zucker, D.S., Olsen, K., 1998. XCOM: Photon Cross Sections Database. National Institute of Standards and Technology. http://www.nist.gov/pml/data/xcom/index.cfm/ Search in Google Scholar

Cardinal, H.N., Holdsworth, D.W., Drangova, M., Hobbs, B.B., Fenster, A., 1993. Experimental and theoretical x-ray imaging performance comparison of iodine and lanthanide contrast agents. Med. Phys., 20, 15-31.10.1118/1.597134Search in Google Scholar

Clausnitzer, V. Hopmans, J.W., 1999. Determination of phasevolume fractions from tomographic measurements in twophase systems. Adv. Water Resour., 22, 577-584.10.1016/S0309-1708(98)00040-2Search in Google Scholar

Heijs, A.W., De Lange, J., Schoute, J.F.Th., Bouma, J., 1995. Computed tomography as a tool for non-destructive analysis of flow patterns in macroporous clay soils. Geoderma, 64, 183-196.10.1016/0016-7061(94)00020-BSearch in Google Scholar

Heindel, T.J., 2011. A review of X-ray flow visualization with applications to multiphase flows. J. Fluids Eng., 133, article number 074001.10.1115/1.4004367Search in Google Scholar

Hirono, T., Takahashi, M., Nakashima, S., 2003. In situ visualization of fluid flow image within deformed rock by X-ray CT. Eng. Geol., 70, 37-46.10.1016/S0013-7952(03)00074-7Search in Google Scholar

Iglauer, S., Paluszny, A., Pentland, C.H., Blunt, M.J., 2011. Residual CO2 imaged with X-ray micro-tomography. Geophys. Res. Lett., 38, L21403.10.1029/2011GL049680Search in Google Scholar

Jinguuji, M., Toprak, S., Kunimatsu, S., 2007. Visualization technique for liquefaction process in chamber experiments by using electrical resistivity monitoring. Soil Dyn. Earthq. Eng., 27, 191-199.10.1016/j.soildyn.2006.08.004Search in Google Scholar

Ketcham, R.A., Carlson, W.D., 2001. Acquisition, optimization and interpretation of X-ray computed tomographic imagery: applications to the geosciences. Comp. Geosci., 27, 381-400.10.1016/S0098-3004(00)00116-3Search in Google Scholar

Minagawa, H., Nishikawa, Y., Ikeda, I., Miyazaki, K., Takahara, N., Sakamoto, Y., Komai, T., Narita, H., 2008. Characterization of sand sediment by pore size distribution and permeability using proton nuclear magnetic resonance measurement. J. Geophys. Res., 113, article number B07210.10.1029/2007JB005403Search in Google Scholar

Nakano, T., Nakashima, Y., Nakamura, K., Ikeda, S., 2000. Observation and analysis of internal structure of rock using X-ray CT. J. Geol. Soc. Jpn., 106, 363-378.10.5575/geosoc.106.363Search in Google Scholar

Nakashima, Y., 2000. The use of X-ray CT to measure diffusion coefficients of heavy ions in water-saturated porous media. Eng. Geol., 56, 11-17.10.1016/S0165-1250(00)80003-6Search in Google Scholar

Nakashima, Y., 2003. Diffusivity measurement of heavy ions in Wyoming montmorillonite gels by X-ray computed tomography. J. Contam. Hydrol., 61, 147-156.10.1016/S0169-7722(02)00138-9Search in Google Scholar

Nakashima, Y., Kamiya, S., 2007. Mathematica programs for the analysis of three-dimensional pore connectivity and anisotropic tortuosity of porous rocks using X-ray computed tomography image data. J. Nucl. Sci. Technol., 44, 1233-1247.10.1080/18811248.2007.9711367Search in Google Scholar

Nakashima, Y., Nakano. T., 2012. Nondestructive quantitative analysis of a heavy element in solution or suspension by single- shot computed tomography with a polychromatic X-ray source. Anal. Sci., 28, 1133-1138.10.2116/analsci.28.1133Search in Google Scholar

Nakashima Y., Watanabe, Y., 2002. Estimate of transport properties of porous media by micro-focus x-ray computed tomography and random walk simulation. Water Resour. Res., 38, article number 1272.10.1029/2001WR000937Search in Google Scholar

Nakashima, Y., Mitsuhata, Y., Nishiwaki, J., Kawabe, Y., Utsuzawa, S., Jinguuji, M., 2011. Non-destructive analysis of oil-contaminated soil core samples by X-ray computed tomography and low-field nuclear magnetic resonance relaxometry: a case study. Water Air Soil Pollut., 214, 681-698. 10.1007/s11270-010-0473-2Search in Google Scholar

Oh, J., Kim, K.Y., Han, W.S., Kim, T., Kim, J.C., Park, E., 2013. Experimental and numerical study on supercritical CO2/brine transport in a fractured rock: Implications of mass transfer, capillary pressure and storage capacity. Adv. Water Resour., (in press).10.1016/j.advwatres.2013.03.007Search in Google Scholar

Remeysen, K., Swennen, R., 2006. Beam hardening artifact reduction in microfocus computed tomography for improved quantitative coal characterization. Int. J. Coal Geol., 67, 101-111.10.1016/j.coal.2005.10.001Search in Google Scholar

Shi, J.Q., Xue, Z., Durucan, S., 2011. Supercritical CO2 core flooding and imbibition in Tako sandstone-influence of subcore scale heterogeneity. Int. J. Greenh. Gas Control, 5, 75-87.10.1016/j.ijggc.2010.07.003Search in Google Scholar

Stock, S.R., Nagaraja, S., Barss, J., Dahl, T., Veis, A., 2003. Xray microCT study of pyramids of the sea urchin Lytechinus variegatus. J. Struct. Biol., 141, 9-21.10.1016/S1047-8477(02)00554-3Search in Google Scholar

Tsuchiyama, A., Hanamoto, T., Nakashima, Y., Nakano, T., 2000. Quantitative evaluation of attenuation contrast of minerals by using a medical X-ray CT scanner. J. Miner. Petrol. Sci., 95, 125-137.10.2465/jmps.95.125Search in Google Scholar

Uemura, S., Fukabori, D., Tsushima, S., Hirai, S., 2012. Visualization and analysis of CO2 permeation process in a porous media by microfocus X-ray computed tomography. Trans. Jpn. Soc. Mech. Eng. Ser B, 78, 74-82.10.1299/kikaib.78.74Search in Google Scholar

Uemura, S., Kataoka, R., Fukabori, D., Tsushima, S., Hirai, S., 2011. Experiment on liquid and supercritical CO2 distribution using micro-focus X-ray CT for estimation of geological storage. Energy Procedia, 4, 5102-5107.10.1016/j.egypro.2011.02.485Search in Google Scholar

Watanabe, N., Ishibashi, T., Tsuchiya, N., Ohsaki, Y., Tamagawa, T., Tsuchiya, Y., Okabe, H., Ito, H., 2013. Geologic core holder with a CFR PEEK body for the X-ray CT-based numerical analysis of fracture flow under confining pressure. Rock Mech. Rock Eng., 46, 413-418.10.1007/s00603-012-0311-5Search in Google Scholar

Wellington, S.L. Vinegar, H.J., 1987. X-ray computerized tomography. J. Petrol. Technol., 39, 885-898.10.2118/16983-PASearch in Google Scholar

Werth, C.J., Zhang, C., Brusseau, M.L., Oostrom, M., Baumann, T., 2010. A review of non-invasive imaging methods and applications in contaminant hydrogeology research. J.\ Contam. Hydrol., 113, 1-24.10.1016/j.jconhyd.2010.01.001Search in Google Scholar

Wildenschild, D., Sheppard, A.P., 2013. X-ray imaging and analysis techniques for quantifying pore-scale structure and processes in subsurface porous medium systems. Adv. Water Resour., 51, 217-246.10.1016/j.advwatres.2012.07.018Search in Google Scholar

Wildenschild, D., Vaz, C.M.P., Rivers, M.L., Rikard, D., Christensen, B.S.B., 2002. Using X-ray computed tomography in hydrology: systems, resolutions, and limitations. J. Hydrol., 267, 285-297.10.1016/S0022-1694(02)00157-9Search in Google Scholar

Zhou, N., Matsumoto, T., Hosokawa, T., Suekane, T., 2010. Pore-Scale visualization of gas trapping in porous media by X-ray CT scanning. Flow Meas. Instrum., 21, 262-267. 10.1016/j.flowmeasinst.2010.05.002Search in Google Scholar

Conceição, P.C., Boeni, M., Dieckow, J., Bayer, C., Mielniczuk, J., 2008. Fracionamento densimétrico com politungstato de sódio no estudo da proteção física da matéria orgânica em solos. R. Bras. Ci. Solo, 32, 541-549.10.1590/S0100-06832008000200009Search in Google Scholar

Gregory, M.R., Johnston, K.A., 1987. A nontoxic substitute forhazardous heavy liquid - aqueous sodium polytungstate (3Na2WO4. 9WO3. H2O) solution. N. Z. J. Geol. Geophys., 30, 317-320.10.1080/00288306.1987.10552626Search in Google Scholar

Munsterman, D., Kerstholt, S., 1996. Sodium polytungstate, a new non-toxic alternative to bromoform in heavy liquid separation. Rev. Palaeobot. Palynology, 91, 417-422.10.1016/0034-6667(95)00093-3Search in Google Scholar

Skipp, G.L., Brownfield, I., 1993. Improved density gradient separation techniques using sodium polytungstate and a comparison to the use of other heavy liquids. US Geological Survey. Open-File Report, 92-386.10.3133/ofr92386Search in Google Scholar

Torresan, M., 1987. The use of sodium polytungstate in heavy mineral separations. US Geological Survey. Open-File Report, 87-590.10.3133/ofr87590Search in Google Scholar