Gas Solubility Coefficient

Henry’s law: Concentration of dissolved gas = pressure x solubility coefficient

Where:

Concentration: Volume of gas dissolved in each volume of water at zero degrees centigrade

Pressure:Atmospheres

Solubility coefficients [37°C]:

Oxygen 0.024

Carbon dioxide 0.57

Nitrogen 0.012

Helium 0.008

Solubility of biological gases dissolved in biological fluids

Concentration of dissolved gas = pressure x solubility coefficient

FOR O2

Concentration of dissolved gas= 1 x 0.024

= 0.024 mls/ml water

= 24 mls/litre

FOR CO2

Concentration of dissolved gas= 1 x 0.57

= 0.57 mls/ml water

= 570 mls/litre