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Measurement of the Diffusion Coefficients of Sparingly Soluble Gases in Water

, , and . Journal of Geophysical Research, 92 (C10): 10767--10776 (1987)

Abstract

The diffusion coefficients \$D\$ of important gas tracers dissolved in water and seawater were measured with a modified Barrer method. The measurements include the gases He, Ne, Kr, Xe, H\$\_2\$, CH\$\_4\$, and CO\$\_2\$ dissolved in distilled water in the temperature range from 5 to 35\$\circ\$C, and He and H\$\_2\$ dissolved in seawater in the same temperature range. The maximum systematic error is estimated to be well below 5\%. The isotopic fractionation in the diffusion coefficient, \$\varepsilon\_D\$, was determined to be (−0.87 ± 0.05)‰ for \$^13\$CO\$\_2\$/\$^12\$CO\$\_2\$ and (15 \$\pm\$ 3)\% for \$^3\$He/\$^4\$He.

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