dissolvedgas
Dissolved gas refers to gas molecules present in a liquid as a solution rather than as dispersed bubbles. In equilibrium, the amount of gas dissolved in a liquid is determined by the partial pressure of the gas above the liquid and by temperature, in accordance with Henry's law: C = k_H p_gas, where C is the dissolved-gas concentration and k_H is Henry's constant for the specific gas–solvent pair. The solubility increases with higher partial pressure and decreases with rising temperature. Other factors such as salinity and the presence of solutes can modify solubility.
Concentrations are commonly expressed in molarity, molality, mole fraction, or as partial pressure data. In water,
Measurement methods include chemical titration for oxygen (Winkler method) and modern optical or electrochemical sensors for