Abstract
The absorptions of noble gases to suspensions of dimyristoylphosphatidylcholine in water were determined by measuring volume and pressure changes in a manometer. Absorptions are expressed in terms of thermodynamic functions of solutions, and also in terms of Bunsen coefficient and Henry's constants. The reasons for using different units and the advantages of each system of units are discussed in the text. The design of the experimental setup and the factors affecting its performance are discussed thoroughly. It is shown that the noble gases dissolve preferentially into the hydrophobic region of the membrane, and that this solution is simple. It is argued that these features make solubility measurements a powerful tool by which membranes can be probed and transport phenomena analyzed.
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