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Electrochemical detection of large channels in porous rocks

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Abstract

An electrochemical method for studying channels in porous rocks and similar insulators, has been developed. In principle, the method consists of displacing a nonconducting liquid from the pores by an inflow of an ionically conducting solution. The conductance is monitored continually as the rate of flow through the rock is gradually increased. The rate of conductance increase is interpreted in terms of a simple model, based on Poiseuille flow through a capillary network, to provide information about the sizes and numbers of large pores in the rock. Three rock samples have been analysed.

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Author information

Author notes

  1. S.O. Engblom

    Present address: Swedish University of Agricultural Science, S-750 07, Uppsala, Sweden

Authors and Affiliations

  1. Department of Chemistry, Trent University, Peterborough, Ontario, Canada, K9J 7B8

    S.O. Engblom, J.C. Myland, K.B. Oldham, A.L. Taylor & W.C. Topic

Authors
  1. S.O. Engblom
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  2. J.C. Myland
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  3. K.B. Oldham
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  4. A.L. Taylor
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  5. W.C. Topic
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Corresponding author

Correspondence to K.B. Oldham.

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Engblom, S., Myland, J., Oldham, K. et al. Electrochemical detection of large channels in porous rocks. Journal of Applied Electrochemistry 33, 51–59 (2003). https://doi.org/10.1023/A:1022915430576

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  • DOI: https://doi.org/10.1023/A:1022915430576

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