Investigation of Complex-Chemical Equilibria in Urinary Systems with Respect to Calcium Oxalate Formation

  • W. Achilles
  • G. A. Cumme
  • M. Scheffel


Calculations of complex-chemical equilibria from total component concentrations, pH and equilibrium constants have proved to be very usefull to determine activity products of the ionized components of stone-forming salts (1–4). In the present paper, calculations of the Ca-oxalate activity product, TT, are reported together with experimental results. Perrins algorithm for chemical equilibrium calculations (5) has been included into a program which allows for the dependence of the activity coefficients an ionic strength according to the Davies-equation (4). The system under regard and computed results are described in Fig. 1. (A more detailed description will be given in a forthcoming paper (6)).


Calcium Oxalate Equilibrium Calculation Urinary Calculus CaOx Stone Urinary Solution 
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  1. 1.
    RAAFLAUB, J. (1963) Helv. Med. Acta 6, 1Google Scholar
  2. 2.
    ROBERTSON, W.G., PEACOCK, M., and NORDIN, B.E.C. (1968) Clin. Sci. 34, 579Google Scholar
  3. 3.
    ROBERTSON, W.G., and NORDIN, B.E.C. (1968) Proc.Ren.Stone. Res. Symp., Leeds; Churchill Ltd., London; 221Google Scholar
  4. 4.
    ROBERTSON, W.G. (1969) Clin. Chim. Acta 24, 149PubMedCrossRefGoogle Scholar
  5. 5.
    PERRIN, D.D., and SAYCE, G. (1967) Talanta 14. 833PubMedCrossRefGoogle Scholar
  6. 6.
    ACHILLES, W., and CUMME, G.A. in preparationGoogle Scholar
  7. 7.
    DIEM, K., and LENTNER, C. in Wissensch. Tabellen (7.Aufl.), CIBA-GEIGY AG, BaselGoogle Scholar
  8. 8.
    ELLIOT, J.S. (1972) Urinary Calculi, Int. Symp. Ren. Stone Res., Madrid, 24Google Scholar
  9. 9.
    MEYER, J.L., and SMITH, L.H. (1975) Invest. Urol. 13 31PubMedGoogle Scholar
  10. 10.
    PINLAYSON, B., ROTH, R., and DUBOIS, L. (1972) Urinary Calculi, Int. Symp. Ren. Stone Res., Madrid, 1Google Scholar
  11. 11.
    ACHILLES, W., SCHEIDT, B., HOPPE, H., and CUMME, G.A. (1976) Acta Biol. Med. Germ. (in press)Google Scholar

Copyright information

© Plenum Press, New York 1976

Authors and Affiliations

  • W. Achilles
    • 1
  • G. A. Cumme
    • 1
  • M. Scheffel
    • 1
  1. 1.Institut für Physiologische ChemieFriedrich-Schiller-Universität JenaJenaGermany

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