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Fresenius' Journal of Analytical Chemistry

, Volume 341, Issue 12, pp 727–731 | Cite as

Critical parameters and optimization of a magnesium-selective liquid membrane electrode for application to human blood serum

  • Ursula E. Spichiger
  • Rudolf Eugster
  • E. Haase
  • G. Rumpf
  • Peter Gehrig
  • Angela Schmid
  • Bruno Rusterholz
  • Wilhelm Simon
Cosmetics And Clinical Material

Summary

The selectivity of a new magnesium ionophore (ETH 7025) induced in membranes of different compositions is experimentally studied in view of the ion activities in human serum. The required selectivity coefficient against calcium for the application of an ion-selective magnesium electrode to human serum is calculated for the worst case. Other critical parameters for the application of a liquid PVC-based ion-selective membrane to undiluted human serum discussed are: the sensor lifetime which is related to the lipophilicity of the carrier as well as the ruggedness of the membrane against interactions with components of the relatively lipophilic sample.

Keywords

Calcium Analytical Chemistry Magnesium Inorganic Chemistry Human Serum 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • Ursula E. Spichiger
    • 1
  • Rudolf Eugster
    • 1
  • E. Haase
    • 1
  • G. Rumpf
    • 1
  • Peter Gehrig
    • 1
  • Angela Schmid
    • 1
  • Bruno Rusterholz
    • 1
  • Wilhelm Simon
    • 1
  1. 1.Department of Organic ChemistrySwiss Federal Institute of Technology (ETH)ZürichSwitzerland

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