Physical solubility and diffusivity of N₂O and CO₂ in aqueous sodium glycinate solutions

Physical solubility and diffusivity of N₂O and CO₂ in pure water and of N₂O in aqueous sodium glycinate solutions of mass fraction (0.1 to 0.5) were measured at T = (303.15 to 323.15) K. Since it was not possible to measure these properties for CO₂ due to the chemical reaction between CO₂ and the amine group of sodium glycinate, these were estimated using the well-known N₂O analogy. While the physical solubility increases with a decrease in temperature and with a decrease in mass fraction, diffusivity decreases with a decrease in temperature as well as an increase in mass fraction except for concentrated solution (mass fraction 0.4 and 0.5) where it increases with a decrease in temperature.