Gnaiger 1983 POS-pO2

Gnaiger E (1983) Calculation of pO2 in water equilibrated with a mixture of room air and nitrogen. In: Polarographic Oxygen Sensors. Aquatic and Physiological Applications. Gnaiger E, Forstner H (eds), Springer, Berlin, Heidelberg, New York:334-6.

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Gnaiger E (1983) Springer

Abstract:

When gas A is dry air and mixed with an oxygen-free dry gas or gas mixture B (e.g., N₂), then the p_O2 in water equilibrated with this gas mixture is

pO2 = (pb−pH2O,Ts)×ϕA×ϕ∗o2, (1)

where p_b is barometric pressure [kPa], p_{H2O,Ts is the saturation water vapor pressure at the temperature of the water sample, ΦA is the volume fraction of gas A in the gas mixture leaving the gas mixing pump,}

ϕA=pA/pb and 1−ϕA=pB/pb, (2)

ϕ^∗_o2 is the volume fraction of oxygen in dry air which can be taken as constant ϕ^∗_o2=0.20946.

In: Gnaiger E, Forstner H, eds (1983) Polarographic Oxygen Sensors. Aquatic and Physiological Applications. Springer, Berlin, Heidelberg, New York:370 pp.

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HRR: Theory 

Theory, POS 1983