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Digitale Medien

Accuracy in measurement of gas partial pressure in biological media by gas-consuming probes (1988)

Pedersen, J. Boiden ; Grønlund, J.

Springer

Medical & biological engineering & computing 26 (1988), S. 203-206

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Details

ISSN: 1741-0444

Schlagwort(e): Depletion layer ; Gas-consuming sensor ; Measurement accuracy ; Partial pressure ; Reference gas method

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Chemie und Pharmazie , Medizin

Notizen: Abstract The accuracy by which gas partial pressures can be measured by membrane-covered gas-consuming probes is investigated. It is shown that the signal depends on the size and shape of the sample. A theoretical estimate of the maximum scatter due to variations in the sample geometry agrees well with the scatter observed in experiments and may thus be used as a measure of the obtainable experimental accuracy. The so-called reference gas method is shown to be useful if the product of the diffusion and solubility coefficients is similar for the two gases, which is the case for O2 and Ar, but not for CO2 and Ar.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02442265

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