Solubility of methane in distilled water and seawater

Bunsen solubility coefficients for methane in distilled water and in seawater at three salinities were determined with an estimated accuracy of 0.5 YO. The experimental data were fit by the least-squares method to an equation established by Weiss. A table of Bunsen solubility coefficients covering the temperature range -2' to 3OoC and the salinity range 0-40 parts per thousand was calculated from the fitted equation. For seawater of salinity 34%0, the Bunsen coefficients ranged from 0.04489 at O°C to 0.02368 at 3OoC. Solubility values for distilled water were in agreement with those reported by Bunsen and Claussen and Polglase but were 34% higher than those of Winkler and Morrison and Billet