Abstract
AbstractThe effective BaSO4 membrane hinders the passage of Ba++ and SO4−− ions, but does not become impervious by precipitation of BaSO4. It remains permeable to other ions and to water.Characteristic for this type of membranes is their self‐regeneration mechanism, which repairs disturbances in the formation and adjustment of the membrane due to microscopic causes.An attempt is made at a mechanical explanation of the permeation of electrolytes through the effective BaSO4 membrane: assumption of the movement of small amounts of solution through randomly arising and again disappearing openings in the effective precipitate layer within the membrane, however, proves to be untenable.The permeability of the effective BaSO4 membrane is selective and is obviously electrochemical in character.
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