Influence of crystallographic properties on antimony electrode potential—III. Oriented monocrystalline material

Edwall, G.

doi:10.1016/0013-4686(79)87041-3

Cited by 12 publications

(2 citation statements)

References 5 publications

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“…With the introduction of monocrystalline antimony pH electrodes (8,18,20), the stability and reproducibility of the antimony electrode were dramatically improved. In a pH 2 HC1 solution the potential was found to be stable within better than i 151 mV (2/100 pH units) during more than 100 h, and also reproducible between different electrodes to within better than 1 mV.…”

Section: Discussionmentioning

confidence: 99%

A multipoint micro antimony pH electrode for tissue surface measurements

Lund

Sjöberg

Guldbrand

et al. 1984

International Journal of Clinical Monitoring and Computing

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Based on monocrystalline antimony we have developed a multipoint tissue surface pH electrode. The six electrodes were produced by spark cutting from a large antimony single crystal. The electrodes were then cast in epoxy resin in a ring shaped structure which fitted around the MDO oxygen electrode. The antimony electrode was ground and polished to expose an undisturbed closely packed crystal plane of antimony to the measuring solution. Before and after monitoring periods standardization was performed in TRIS buffers of pH 6.72, 7.32 and 7.74 at 37 degrees C. Antimony electrode potential is influenced by oxygen. Therefore, mean tissue oxygen pressure was registered simultaneously with an MDO electrode. The oxygen sensitivity factor used in this study was 18mV/logpO2. The correction factor for the antimony electrode oxygen dependence, measured in vitro, seemed to be correct also for the in vivo state. This, however, needs further investigation. To illustrate the usefulness of the multipoint pH electrode seven normal state rabbits were studied, and thereafter four - one each in a hypoxic, hypocarbic, hypovolemic or hyperoxic situation. In the normal state tissue pH measured on a skeletal muscle surface varied from 7.0 to 7.4. In the case of tissue microcirculation shutdown (in the hypocarbic or the hypovolemic situations), the initial reaction was a scattering of the pH values, and then the development of tissue acidosis. Our conclusion is that the use of a multipoint pH sensor enables improved and more detailed monitoring of the tissue acid-base status.

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Section: Discussionmentioning

confidence: 99%

A multipoint micro antimony pH electrode for tissue surface measurements

Lund

Sjöberg

Guldbrand

et al. 1984

International Journal of Clinical Monitoring and Computing

Self Cite

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“…¹35 to ¹45 mV/pH for W, 8) ¹42 mV/pH for Sb, 10) and ¹55 mV/pH for Ir. 14) Some have attempted to explain this effect in terms of the interference by the reduction reaction of dissolved oxygen, 1315) and the effect of the surface area. 16,17) Although there was a slight difference in the slope between the obtained value and the theoretical Table 2 List of the applied current densities on the anode and cathode sides of the steel during the galvanostatic polarization test.…”

Section: Ph Measurement In a Thin Electrolyte Dropletmentioning

confidence: 99%

Measurement of pH in a Thin Electrolyte Droplet Using the Kelvin Probe Technique

et al. 2019

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In this study, pH measurement was performed in a thin electrolyte droplet with a thickness <1000 µm by the measurement of the equilibrium electrode potential of an Sb/Sb x O y electrode used as a pH sensor. The equilibrium potential of the Sb/Sb x O y electrode was evaluated by using the Kelvin probe (KP) technique. To investigate the potential response of the Sb electrode in a thin electrolyte droplet, the dependency of the Volta potential difference between the Sb and a gold wire as a KP on electrolyte droplet thickness was measured. The Volta potential difference had a linear response with respect to the buffer solution pH, independent of the droplet thickness. This result indicates that the KP technique, combined with an Sb electrode, is sensitive to the pH of a thin electrolyte droplet of thickness ²50 µm. This pH measurement technique was also applied to measure pH in a corrosion model of steel. The corrosion model consisted of two steel plates in the same plane as the anode and cathode, with a constant current between them. During the corrosion process, the pH value decreased from 6 to 5 near the anode and increased from 6 to 12 at the cathode. The changes in pH measured in the thin electrolyte droplet were in good agreement with the color changes of the solution containing pH indicators.

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Modified conventional type ofpCO2-electrode with monocrystalline antimony as the pH-sensing element

Markdahl-Bjarme

Edwall

1981

Med. Biol. Eng. Comput.

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Influence of crystallographic properties on antimony electrode potential—III. Oriented monocrystalline material

Cited by 12 publications

References 5 publications

A multipoint micro antimony pH electrode for tissue surface measurements

A multipoint micro antimony pH electrode for tissue surface measurements

Measurement of pH in a Thin Electrolyte Droplet Using the Kelvin Probe Technique

Modified conventional type ofpCO2-electrode with monocrystalline antimony as the pH-sensing element

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