Fig. 2: Solubilities of various gases in cold liquids as a function of temperature.
From: HydroX, a light dark matter search with hydrogen-doped liquid xenon time projection chambers

Methane (argon/xenon) as a solvent are shown in diamonds (triangles/circles). The various solutes are labeled and distinguished by color. The open red circle shows unpublished data from a test stand at Fermilab. The solubilities in liquid xenon measured by LUX and associated small setups are substantially higher than those in methane and argon.