Noun
English Wikipedia has an article on:pertechnetateWikipedia
pertechnetate (plural pertechnetates)
(inorganic chemistry) The univalent technetium anion TcO4; any salt containing this anion
One theory holds that the pertechnetate reacts with the steel surface to form a layer of technetium dioxide which prevents further corrosion; the same effect explains how iron powder can be used to remove pertechnetate from water. Source: Internet
In one experiment, a specimen of carbon steel was kept in an aqueous solution of pertechnetate for 20 years and was still uncorroded. Source: Internet
The anionic pertechnetate and iodide tend not to adsorb into the surfaces of minerals, and are likely to be washed away. Source: Internet
Hence the pertechnetate escapes through those processes. Source: Internet