isolate or hide away

she is sequestered in deepest Dorset

the artist sequestered himself in his studio for two years

their property was sequestered by Parliament

form a chelate or other stable compound with (an ion, atom, or molecule) so that it is no longer available for reactions

non-precipitating water softeners use complex phosphates to sequester calcium and magnesium ions

the organic sequestering agent EDTA