Potassium Ion Specific Electrode with High Selectivity for Potassium over Sodium

  title={Potassium Ion Specific Electrode with High Selectivity for Potassium over Sodium},
  author={Martin S. Frant and James W. Ross},
  pages={987 - 988}
A new potassium electrode, made from valinomycin, which uses commercially available electrode configurations, responds to potassium ion concentrations from 1 mole per liter to below 10-6 mole per liter. It is highly selective for potassium ion over sodium ion and divalent ions and can be used for the direct determination of potassium ion in human serumn. No significant complexing of potassiium appears to occur in normal seruin. 
Calibration of ion-selective electrodes for use in biological fluids.
The lanthanum fluoride electrode shows promise as a reliable reference in cells without liquid junction and appears to respond in a near-Nernstian manner to changes in concentration of the ion sensed. Expand
The transport of calcium and sodium ions across bilayers induced by neutral synthetic ligands used in specific electrodes.
Neutral synthetic ligands of calcium and sodium which enter into the liquid membrane composition of the selective electrodes of these ions have been incorporated within the bilayer and shown to behave as ion carriers for calcium or sodium ions. Expand
Potassium-Adenosine Triphosphate Complex: Formation Constant Measured with Ion-Selective Electrodes
Valinomycin and glass electrodes were used to measure activity of potassium ions in equilibrium with adenosine triphosphate. The thermodynamic formation constant of the complex is approximately 25Expand
Ion-Selective Electrodes Based on Neutral Carriers
In ion-selective liquid-membrane electrodes, mobile ion-selective sites are interposed usually between a sample and reference solution, as shown schematically in Fig. 1.(1–3) Such electrode systemsExpand
Selectrode—the universal ion-selective electrode : Part VII. A valinomycin-based potassium electrode with nonporous polymer membrane and solid-state inner reference system
Abstract A potassium electrode utilizing a solution of valinomycin in diphenylether and a porous membrane is compared with selectrodes in which the diphenylether has been replaced by a suitableExpand
Electrochemistry of Ion-Selective Electrodes
Ion-Selective Electrodes (ISEs) for measurement of activities of species in aqueous and mixed solvents, or partial pressures of dissolved gases in water, are mainly membrane-based devices, involveExpand
Selectrode—the universal ion-selective electrode: Part VI. The calcium(II) selectrode employing a new ion exchanger in a nonporous membrane and a solid-state reference system
Abstract The correlation between extraction data and electrode behaviour assisted in explaining the vital properties of organophosphate-based calcium electrodes, and in suggesting a new liquid ionExpand
Potassium-specific ion-exchanger microelectrodes to measure K + activity in the renal distal tubule.
This work constructed potassium-selective liquid ion-exchanger microelectrodes to measure K+ activity in rat distal tubules and reviewed some details of the theoretical basis for the method and some of the practical considerations relevant to its application. Expand
Analysis of Alpine Waters by Ion Electrode Methods
Ion electrode procedures are described for determining SO4, Cl, Ca + Mg, K, and Na for waters of low salinity (<30 ppm). Anion-cation balances average discrepancies of ±4.2%. Waters derived fromExpand
Development and application of potentiometric methods of charcterizing potassium in soils and micaceous minerals
Electrochemical cells for the determination of potassium consist of a potassium ion-selective electrode (K-ISE) and a reference electrode that contacts the test solution either directly (i.e., cellsExpand


Alcohol, amines, and alkaloids: a possible biochemical basis for alcohol addiction.
Tetrahydropapaveroline is a benzyltetrahydroisoquinoline alkaloidderivative of the biogenic amine, dopnmine. Alcohol, by way of its primary metabolite, acetaldehyde, competitively inhibitsExpand
Cretinism in Rats: Enduring Behavioral Deficit Induced by Tricyanoaminopropene
Exposure to tricyanoaminopropene before and after birth, at doses sufficient to produce anatomicalcretinism, apparently induces an enduring behavioral deficit which is similar to that of neonatal thyroidectomy-induced cretinism in rats and which parallels the mental retardation associated with human cretinists. Expand
Neutrophils: Their Role in the Formation of a Tick Feeding Lesion
Dogs infested with adtult Rhipicephalus sanguineus were given nitrogen mustard to reduce leukocyte numbers and the tick lesions were insignificant, lacking the collagen destruiction found in untreated hosts. Expand
Atomic KY-1 flame photometer was used, with an interpal lithium standard, at a dilution
  • For most substances studied, placental transSCIENCE,
  • 1969
paper presented at the spring meeting of the Electrochemical Society
  • New York,
  • 1969
Garrels, in Glass Electrodes for Hydrogen and Other Caftons
  • New York,
  • 1967
Induced active transport of ions in mitochondria.
  • B. Pressman
  • Medicine, Chemistry
  • Proceedings of the National Academy of Sciences of the United States of America
  • 1965
  • Proc. Nat. Acad. Sci. U.S
  • 1965