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Can gas diffusion electrodes be used with non-aqueous solvents?

Can gas diffusion electrodes be used with non-aqueous solvents?

  • Unfortunately, the commonly used gas diffusion electrodes (based on carbon fibres) are not compatible with non-aqueous solvents. The use of a gas diffusion electrode is necessary to enhance solubility of the reactant gases in the electrolyte and to maximize their diffusive transport to the catalyst surface.

Why is passive diffusion sampling used in remote locations?

  • Because they do not require a power supply, they can be used in remote locations. Passive diffusion sampling of gaseous compounds involves diffusive transport into the device upon which the analyte either reacts with or is trapped by the sorbent medium, which may be an impregnated filter or molecular sieve.

What are the factors that affect the rate of diffusion?

  • The rate of diffusion depends, apart from the lipid/water partition coefficient of the drug (P) and the concentration gradient ( Cout − Cin ), on membrane properties such as the membrane area ( A) and thickness ( h ), and the diffusion coefficient ( D) of the drug in the membrane, according to Fick's law:

image-Can gas diffusion electrodes be used with non-aqueous solvents?
image-Can gas diffusion electrodes be used with non-aqueous solvents?
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